Cisco: Clock

Blueprint

CCIE R&S
- Written v5.1
  - 6.0 Infrastructure Services
    - 6.1 System management
      - 6.1.c Implement and troubleshoot logging
      - 6.1.c [ii] Timestamp
  - 6.3 Network services
    - 6.3.b Implement and troubleshoot network time protocol
      - 6.3.b [i] NTP master, client, version 3, version 4
      - 6.3.b [ii] NTP Authentication
- Lab v5.0
  - 5.0 Infrastructure Services
    - 5.1 System management
      - 5.1.c Implement and troubleshoot logging
        
        5.1.c [ii] Timestamp
    - 5.3 Network services
      - 5.3.b Implement and troubleshoot network time protocol
        
        5.3.b [i] NTP master, client, version 3, version 4
        
        5.3.b [ii] NTP authentication

Manual Configuration

configure terminal
!
clock timezone JST 9
!
end

Hardware clock seems not implemented in Catalyst 3750, 2960.

Cisco ISR 1841 Router has hardware clock.

Log

SW1#sh clock
*00:04:57.132 UTC Mon Mar 1 1993
SW1#sh calen
SW1#sh calendar
          ^
% Invalid input detected at '^' marker.

SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#clock timezone JST 9
SW1(config)#
*Mar  1 00:06:28.283: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:06:28 UTC Mon Mar 1 1993 to 09:06:28 JST Mon Mar 1 1993, configured from console by console.
SW1(config)#do sh run | i clock timezone
clock timezone JST 9 0
SW1(config)#clock timezone JST 9 ?      
  <0-59>  Minutes offset from UTC
  <cr>

SW1(config)#cloc                 
SW1(config)#clock se
SW1(config)#clock ? 
  initialize   Initialize system clock on restart
  save         backup of clock with NVRAM
  summer-time  Configure summer (daylight savings) time
  timezone     Configure time zone

SW1(config)#end   
SW1#
*Mar  1 00:12:50.132: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh clock
*09:13:07.405 JST Mon Mar 1 1993
SW1#clo
SW1#clock se
SW1#clock set ?
  hh:mm:ss  Current Time

SW1#clock set 17:52:00 ?     
  <1-31>  Day of the month
  MONTH   Month of the year

SW1#clock set 17:52:00 21 ?
  MONTH  Month of the year

SW1#clock set 17:52:00 21 1 ?
% Unrecognized command
SW1#clock set 17:52:00 21 Sep 
SW1#clock set 17:52:00 21 September ?
  <1993-2035>  Year

SW1#clock set 17:52:00 21 Sep       
SW1#clock set 17:52:00 21 Sep
SW1#clock set 17:52:00 21 Sep ?
  <1993-2035>  Year

SW1#clock set 17:52:40 21 Sep 2019
SW1#
*Sep 21 08:52:40.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 09:16:14 JST Mon Mar 1 1993 to 17:52:40 JST Sat Sep 21 2019, configured from console by console.
SW1#sh clock
17:52:52.037 JST Sat Sep 21 2019
SW1#sh clock
17:52:57.163 JST Sat Sep 21 2019
SW1#sh clock
17:53:00.023 JST Sat Sep 21 2019
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#clock timezone JST 9
SW1(config)#end
SW1#
Sep 21 08:54:03.827: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh clock
17:54:29.043 JST Sat Sep 21 2019
SW1#calendar set ?
% Unrecognized command
SW1#clo          
SW1#clock upda
SW1#clock update-calendar
          ^
% Invalid input detected at '^' marker.

SW1#

R1#sh clock
*08:41:22.511 UTC Sat Sep 21 2019
R1#sh calendar
08:41:30 UTC Sat Sep 21 2019
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#clock timezone JST 9
R1(config)#
*Sep 21 08:45:59.503: %SYS-6-CLOCKUPDATE: System clock has been updated from 08:45:59 UTC Sat Sep 21 2019 to 17:45:59 JST Sat Sep 21 2019, configured from console by console.
R1(config)#do sh clock
*17:46:13.903 JST Sat Sep 21 2019
R1(config)#do sh cal
% Ambiguous command:  "sh cal"
R1(config)#do sh cale
17:46:28 JST Sat Sep 21 2019
R1(config)#conf t
                ^
% Invalid input detected at '^' marker.

R1(config)#clock timezone JST 9
R1(config)#end
R1#
*Sep 21 08:53:36.231: %SYS-5-CONFIG_I: Configured from console by console
R1#sh clock
*17:54:01.459 JST Sat Sep 21 2019
R1#
R1#sh clock
*01:51:34.789 JST Sun Sep 22 2019
R1#sh calendar
01:51:41 JST Sun Sep 22 2019

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#clock timezone JST 9
R2(config)#
*Sep 21 08:54:08.403: %SYS-6-CLOCKUPDATE: System clock has been updated from 08:54:08 UTC Sat Sep 21 2019 to 17:54:08 JST Sat Sep 21 2019, configured from console by console.
R2(config)#end
R2#
*Sep 21 08:54:12.359: %SYS-5-CONFIG_I: Configured from console by console
R2#sh clock
*17:54:37.587 JST Sat Sep 21 2019
R2#
R2#sh clock
*01:52:11.085 JST Sun Sep 22 2019
R2#sh calendar
01:52:17 JST Sun Sep 22 2019

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#clock timezone JST 9
R3(config)#
*Sep 21 09:15:42.291: %SYS-6-CLOCKUPDATE: System clock has been updated from 09:15:42 UTC Sat Sep 21 2019 to 18:15:42 JST Sat Sep 21 2019, configured from console by console.
R3(config)#end
R3#
*Sep 21 09:15:46.247: %SYS-5-CONFIG_I: Configured from console by console
R3#sh clock
*18:16:11.475 JST Sat Sep 21 2019
R3#calendar set 18:00:00 21 Sep 2019
R3#sh clock
*18:21:49.855 JST Sat Sep 21 2019
R3#sh calendar
18:00:09 JST Sat Sep 21 2019
R3#clo
R3#clock upda
R3#sh clock              
*18:25:16.123 JST Sat Sep 21 2019
R3#sh calendar
18:03:37 JST Sat Sep 21 2019
R3#clock upda
R3#clock update-calendar 
R3#sh clock
*18:25:37.103 JST Sat Sep 21 2019
R3#sh calenda
R3#sh calendar 
18:25:51 JST Sat Sep 21 2019
R3#sh clock    
*18:25:55.407 JST Sat Sep 21 2019
R3#sh calendar
18:25:56 JST Sat Sep 21 2019
R3#
R3#sh clock
*02:13:44.725 JST Sun Sep 22 2019
R3#sh calendar
02:13:46 JST Sun Sep 22 2019

Daylight Saving Time(DST, Summer Time)

Japan is not use DST. So, following configuration is not practical example.

configure terminal
!
! recurring every year
clock summer-time JST recurring 4 Sun Sep 14:15 4 Sun Sep 17:00 105
!
! absolute time one shot summer time
clock summer-time JST date 22 Sep 2019 19:00 22 Sep 2019 22:00 120
!
end

Console Log

SW1(config)#clock timezone JST 9
SW1(config)#
*Mar  1 02:51:46.503: %SYS-6-CLOCKUPDATE: System clock has been updated from 02:51:46 UTC Mon Mar 1 1993 to 11:51:46 JST Mon Mar 1 1993, configured from console by console.
SW1(config)#end
SW1#
*Mar  1 02:51:48.533: %SYS-5-CONFIG_I: Configured from console by console
SW1#clock set 
SW1#clock set ?
  hh:mm:ss  Current Time

SW1#clock set 12:10:00 22 Sep 2019
SW1#
*Sep 22 03:10:00.008: %SYS-6-CLOCKUPDATE: System clock has been updated from 11:52:53 JST Mon Mar 1 1993 to 12:10:00 JST Sun Sep 22 2019, configured from console by console.
SW1#sh clock
12:10:05.419 JST Sun Sep 22 2019
SW1#sh clock
12:10:14.914 JST Sun Sep 22 2019
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#cloc
SW1(config)#clock summer
SW1(config)#clock summer-time ?
  WORD  name of time zone in summer

SW1(config)#clock summer-time JST ?
  date       Configure absolute summer time
  recurring  Configure recurring summer time

SW1(config)#clock summer-time JST recu
SW1(config)#clock summer-time JST recurring ?
  <1-4>  Week number to start
  first  First week of the month
  last   Last week of the month
  <cr>

SW1(config)#clock summer-time JST recurring first ?
  DAY  Weekday to start

SW1(config)#clock summer-time JST recurring first su
SW1(config)#clock summer-time JST recurring first monday ?
  MONTH  Month to start

SW1(config)#clock summer-time JST recurring first monday Sep ?
  hh:mm  Time to start (hh:mm)

SW1(config)#clock summer-time JST recurring 4 sundaSW1 Sep 12:21 ?
  <1-4>  Week number to end
  first  First week of the month
  last   Last week of the month

SW1(config)#clock summer-time JST recurring 4 sunday Sep 12:21 4 sun
SW1(config)#$r-time JST recurring 4 sunday Sep 12:21 4 sunday Sep 14:00 ?     
  <1-1440>  Offset to add in minutes
  <cr>

SW1(config)#$r-time JST recurring 4 sunday Sep 12:21 4 sunday Sep 14:00 90 ?
  <cr>

SW1(config)#$r-time JST recurring 4 sunday Sep 12:22 4 sunday Sep 14:00 90 
SW1(config)#
Sep 22 03:21:44.064: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:21:44 JST Sun Sep 22 2019 to 12:21:44 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#no clock summer-time JST recurring 4 sunday Sep 12:22 4 sunday Sep$
SW1(config)#no clock summer-time JST recurring 4 sunday Sep 12:22 4 sunday Sep$
Sep 22 03:22:42.222: %SYS-6-CLOCKUPDATE: System clock has been updated from 13:52:42 JST Sun Sep 22 2019 to 12:22:42 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#$r-time JST recurring 4 sunday Sep 12:24 4 sunday Sep 14:00 90     
SW1(config)#
Sep 22 03:22:58.597: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:22:58 JST Sun Sep 22 2019 to 12:22:58 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#$r-time JST recurring 4 sunday Sep 12:25 4 sunday Sep 14:00 90 
SW1(config)#$r-time JST recurring 4 sunday Sep 12:25 4 sunday Sep 14:00 90 
Sep 22 03:24:32.146: %SYS-6-CLOCKUPDATE: System clock has been updated from 13:54:32 JST Sun Sep 22 2019 to 12:24:32 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#no clock summer-time JST recurring 4 sunday Sep 12:25 4 sunday Sep$
SW1(config)#no clock summer-time JST recurring 4 sunday Sep 12:25 4 sunday Sep$
Sep 22 03:24:36.559: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:24:36 JST Sun Sep 22 2019 to 12:24:36 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#no clock summer-time JST recurring 4 sunday Sep 12:24 4 sunday Sep$
SW1(config)#$r-time JST recurring 4 sunday Sep 12:26 4 sunday Sep 14:00 90     
SW1(config)#
SW1(config)#
Sep 22 03:24:56.238: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:24:56 JST Sun Sep 22 2019 to 12:24:56 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#end
SW1#sh lo
Sep 22 03:25:00.676: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh lock
          ^
% Invalid input detected at '^' marker.

SW1#sh clock
12:25:04.426 JST Sun Sep 22 2019
SW1#sh clock
12:25:14.551 JST Sun Sep 22 2019
SW1#sh clock
12:25:16.824 JST Sun Sep 22 2019
SW1#sh clock
12:25:18.107 JST Sun Sep 22 2019
SW1#sh clock
12:25:24.424 JST Sun Sep 22 2019
SW1#sh clock
12:25:27.595 JST Sun Sep 22 2019
SW1#sh clock
12:25:30.179 JST Sun Sep 22 2019
SW1#sh clock
12:25:32.678 JST Sun Sep 22 2019
SW1#sh clock
12:25:35.497 JST Sun Sep 22 2019
SW1#sh clock
12:25:48.231 JST Sun Sep 22 2019
SW1#sh clock
12:25:51.821 JST Sun Sep 22 2019
SW1#sh clock
12:25:53.205 JST Sun Sep 22 2019
SW1#sh clock
12:25:54.590 JST Sun Sep 22 2019
SW1#sh clock
12:25:55.865 JST Sun Sep 22 2019
SW1#sh clock
12:25:57.165 JST Sun Sep 22 2019
SW1#sh clock
12:25:58.373 JST Sun Sep 22 2019
SW1#sh clock
12:25:59.572 JST Sun Sep 22 2019
SW1#sh clock
13:56:05.990 JST Sun Sep 22 2019
SW1#sh clock
13:56:23.698 JST Sun Sep 22 2019
SW1#sh run | i summer-time
clock summer-time JST recurring 4 Sun Sep 12:26 4 Sun Sep 14:00 90
SW1#

SW1(config)#do sh run | i summer
SW1(config)#do sh clock
14:13:16.545 JST Sun Sep 22 2019
SW1(config)#$r-time JST recurring 4 Sun Sep 14:15 4 Sun Sep 17:00 105        
SW1(config)#
Sep 22 05:14:10.400: %SYS-6-CLOCKUPDATE: System clock has been updated from 14:14:10 JST Sun Sep 22 2019 to 14:14:10 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#end
SW1#sh 
Sep 22 05:14:27.471: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh clock
14:14:35.029 JST Sun Sep 22 2019
SW1#sh clock
14:14:41.765 JST Sun Sep 22 2019
SW1#sh clock
14:14:44.894 JST Sun Sep 22 2019
SW1#sh clock
14:14:47.478 JST Sun Sep 22 2019
SW1#sh clock
14:14:49.843 JST Sun Sep 22 2019
SW1#sh clock
14:14:52.813 JST Sun Sep 22 2019
SW1#sh clock
14:14:55.019 JST Sun Sep 22 2019
SW1#sh clock
14:14:57.402 JST Sun Sep 22 2019
SW1#sh clock
14:14:59.759 JST Sun Sep 22 2019
SW1#sh clock
16:00:02.099 JST Sun Sep 22 2019
SW1#sh clock
16:00:06.646 JST Sun Sep 22 2019
SW1#sh clo
SW1#sh clock ?
  detail  Display detailed information
  |       Output modifiers
  <cr>

SW1#sh clock de
SW1#sh clock detail 
16:00:14.573 JST Sun Sep 22 2019
Time source is user configuration
Summer time starts 14:15:00 JST Sun Sep 22 2019
Summer time ends 17:00:00 JST Sun Sep 22 2019
SW1#sh clock detail 
16:00:42.373 JST Sun Sep 22 2019
Time source is user configuration
Summer time starts 14:15:00 JST Sun Sep 22 2019
Summer time ends 17:00:00 JST Sun Sep 22 2019
SW1#sh clock        
16:00:52.582 JST Sun Sep 22 2019
SW1#sh clock
16:21:29.625 JST Sun Sep 22 2019
SW1#sh clock
16:22:11.064 JST Sun Sep 22 2019
SW1#sh clock
16:36:29.420 JST Sun Sep 22 2019
SW1#sh clock
16:56:57.194 JST Sun Sep 22 2019
SW1#sh clock
16:57:01.900 JST Sun Sep 22 2019
SW1#sh clock
16:57:02.764 JST Sun Sep 22 2019
SW1#sh clock
16:57:03.796 JST Sun Sep 22 2019
SW1#sh clock
15:16:19.715 JST Sun Sep 22 2019
SW1#sh run | i summer
clock summer-time JST recurring 4 Sun Sep 14:15 4 Sun Sep 17:00 105
SW1#

SW1#sh clock
16:27:42.410 JST Sun Sep 22 2019
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#$mmer-time JST recurring 4 Sun Sep 14:15 4 Sun Sep 17:00 105     
SW1(config)#
Sep 22 07:27:55.555: %SYS-6-CLOCKUPDATE: System clock has been updated from 16:27:55 JST Sun Sep 22 2019 to 16:27:55 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i summer
SW1(config)#
SW1(config)#
SW1(config)#cloc
SW1(config)#clock summer-ti
SW1(config)#clock summer-time JST da
SW1(config)#clock summer-time JST date ?
  <1-31>  Date to start
  MONTH   Month to start

SW1(config)#clock summer-time JST date 22 ?
  MONTH  Month to start

SW1(config)#clock summer-time JST date 22 Sep ?
  <1993-2035>  Year to start

SW1(config)#clock summer-time JST date 22 Sep 2019 ?
  hh:mm  Time to start (hh:mm)

SW1(config)#clock summer-time JST date 22 Sep 2019 16:35 ?
  <1-31>  Date to end
  MONTH   Month to end

SW1(config)#clock summer-time JST date 22 Sep 2019 16:35 22 Sep 2019 19:00 ?
  <1-1440>  Offset to add in minutes
  <cr>

SW1(config)#clock summer-time JST date 22 Sep 2019 16:35 22 Sep 2019 20:00 120
SW1(config)#
Sep 22 07:32:53.694: %SYS-6-CLOCKUPDATE: System clock has been updated from 16:32:53 JST Sun Sep 22 2019 to 16:32:53 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#end   
SW1#sh ru
Sep 22 07:33:00.523: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh run | i summer
clock summer-time JST date Sep 22 2019 16:35 Sep 22 2019 20:00 120
SW1#
SW1#
SW1#
SW1#sh clock
16:33:14.171 JST Sun Sep 22 2019
SW1#sh clock
16:33:17.493 JST Sun Sep 22 2019
SW1#sh clock
16:33:20.412 JST Sun Sep 22 2019
SW1#sh clock
16:33:21.687 JST Sun Sep 22 2019
SW1#sh clock
16:33:56.131 JST Sun Sep 22 2019
SW1#sh clock
16:33:59.914 JST Sun Sep 22 2019
SW1#sh clock
16:34:09.611 JST Sun Sep 22 2019
SW1#sh clock
16:34:21.171 JST Sun Sep 22 2019
SW1#sh clock
16:34:28.058 JST Sun Sep 22 2019
SW1#sh clock
16:34:29.484 JST Sun Sep 22 2019
SW1#sh clock
16:34:30.960 JST Sun Sep 22 2019
SW1#sh clock
16:34:32.529 JST Sun Sep 22 2019
SW1#sh clock
16:34:34.223 JST Sun Sep 22 2019
SW1#sh clock
16:34:37.755 JST Sun Sep 22 2019
SW1#sh clock
16:34:39.802 JST Sun Sep 22 2019
SW1#sh clock
16:34:42.503 JST Sun Sep 22 2019
SW1#sh clock
16:34:44.768 JST Sun Sep 22 2019
SW1#sh clock
16:34:47.771 JST Sun Sep 22 2019
SW1#sh clock
16:34:49.658 JST Sun Sep 22 2019
SW1#sh clock
16:34:51.521 JST Sun Sep 22 2019
SW1#sh clock
16:34:56.336 JST Sun Sep 22 2019
SW1#sh clock
16:34:57.888 JST Sun Sep 22 2019
SW1#sh clock
16:34:59.255 JST Sun Sep 22 2019
SW1#sh clock
18:35:00.639 JST Sun Sep 22 2019
SW1#sh clock
18:35:04.078 JST Sun Sep 22 2019
SW1#sh clock
18:35:11.343 JST Sun Sep 22 2019
SW1#
SW1#
SW1#
SW1#sh clock
18:35:23.381 JST Sun Sep 22 2019
SW1#

SW1#sh clock
18:54:59.749 JST Sun Sep 22 2019
SW1#sh run | i summer
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#clock summer-time JST date 22 Sep 2019 19:00 22 Sep 2019 22:00 120
SW1(config)#
Sep 22 09:55:58.268: %SYS-6-CLOCKUPDATE: System clock has been updated from 18:55:58 JST Sun Sep 22 2019 to 18:55:58 JST Sun Sep 22 2019, configured from console by console.
SW1(config)#end
SW1#
Sep 22 09:56:07.831: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh run | i summer
clock summer-time JST date Sep 22 2019 19:00 Sep 22 2019 22:00 120
SW1#
SW1#
SW1#sh clock
18:56:18.778 JST Sun Sep 22 2019
SW1#sh clock
18:56:29.549 JST Sun Sep 22 2019
SW1#sh clock
18:56:32.360 JST Sun Sep 22 2019
SW1#sh clock
18:58:19.583 JST Sun Sep 22 2019
SW1#sh clock
18:58:30.429 JST Sun Sep 22 2019
SW1#sh clock
18:58:55.855 JST Sun Sep 22 2019
SW1#sh clock
18:59:00.662 JST Sun Sep 22 2019
SW1#sh clock
18:59:30.005 JST Sun Sep 22 2019
SW1#sh clock
18:59:44.853 JST Sun Sep 22 2019
SW1#sh clock
18:59:46.757 JST Sun Sep 22 2019
SW1#sh clock
18:59:48.309 JST Sun Sep 22 2019
SW1#sh clock
18:59:50.155 JST Sun Sep 22 2019
SW1#sh clock
18:59:51.967 JST Sun Sep 22 2019
SW1#sh clock
18:59:53.636 JST Sun Sep 22 2019
SW1#sh clock
18:59:55.171 JST Sun Sep 22 2019
SW1#sh clock
18:59:56.538 JST Sun Sep 22 2019
SW1#sh clock
18:59:57.822 JST Sun Sep 22 2019
SW1#sh clock
18:59:58.795 JST Sun Sep 22 2019
SW1#sh clock
18:59:59.835 JST Sun Sep 22 2019
SW1#sh clock
21:00:00.867 JST Sun Sep 22 2019
SW1#sh clock
21:00:03.954 JST Sun Sep 22 2019
SW1#sh clock
21:00:05.137 JST Sun Sep 22 2019
SW1#sh clock
21:00:06.076 JST Sun Sep 22 2019
SW1#sh clock
21:00:09.272 JST Sun Sep 22 2019
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#! wait until 22:00(20:00)
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#sh clock
21:55:58.021 JST Sun Sep 22 2019
SW1#sh clock
21:55:59.825 JST Sun Sep 22 2019
SW1#sh clock
21:56:20.167 JST Sun Sep 22 2019
SW1#sh clock
21:57:55.562 JST Sun Sep 22 2019
SW1#sh clock
21:57:59.732 JST Sun Sep 22 2019
SW1#sh clock
21:58:01.124 JST Sun Sep 22 2019
SW1#sh clock
21:58:46.070 JST Sun Sep 22 2019
SW1#sh clock
21:59:00.901 JST Sun Sep 22 2019
SW1#sh clock
21:59:18.442 JST Sun Sep 22 2019
SW1#sh clock
21:59:28.483 JST Sun Sep 22 2019
SW1#sh clock
21:59:31.847 JST Sun Sep 22 2019
SW1#sh clock
21:59:45.705 JST Sun Sep 22 2019
SW1#sh clock
21:59:50.579 JST Sun Sep 22 2019
SW1#sh clock
21:59:52.181 JST Sun Sep 22 2019
SW1#sh clock
21:59:53.221 JST Sun Sep 22 2019
SW1#sh clock
21:59:54.286 JST Sun Sep 22 2019
SW1#sh clock
21:59:55.410 JST Sun Sep 22 2019
SW1#sh clock
21:59:56.610 JST Sun Sep 22 2019
SW1#sh clock
21:59:57.726 JST Sun Sep 22 2019
SW1#sh clock
21:59:58.875 JST Sun Sep 22 2019
SW1#sh clock
21:59:59.982 JST Sun Sep 22 2019
SW1#sh clock
20:00:01.123 JST Sun Sep 22 2019
SW1#sh clock
20:00:03.011 JST Sun Sep 22 2019
SW1#sh clock
20:00:04.319 JST Sun Sep 22 2019
SW1#sh clock
20:00:05.477 JST Sun Sep 22 2019
SW1#sh clock detail
20:00:11.106 JST Sun Sep 22 2019
Time source is user configuration
Summer time starts 19:00:00 JST Sun Sep 22 2019
Summer time ends 22:00:00 JST Sun Sep 22 2019
SW1#

NTP

Server / Client Configuration

configure terminal
!
vtp mode transparent
!
vlan 128
exit
!
ip routing
!
spanning-tree portfast default
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
!
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

configure terminal
!
clock timezone JST 9
!
ntp server 10.0.128.254 prefer
!
end

show ntp associations

Console Log

SW1(config)#ntp server 
*Mar  1 04:23:58.874: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan128, changed state to up
SW1(config)#do ping 10.0.128.254 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/2/8 ms
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp server 10.0.128.254 prefe
SW1(config)#ntp server 10.0.128.254 prefer 
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#end
SW1#
SW1#
SW1#
SW1#
*Mar  1 04:25:03.961: %SYS-5-CONFIG_I: Configured from console by console
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#clock
SW1(config)#clock time
SW1(config)#clock timezone JST 9
SW1(config)#end
SW1#
*Sep 23 07:01:06.949: %SYS-6-CLOCKUPDATE: System clock has been updated from 07:01:06 UTC Mon Sep 23 2019 to 16:01:06 JST Mon Sep 23 2019, configured from console by console.
SW1#
SW1#
SW1#
SW1#
SW1#sh 
*Sep 23 07:01:08.274: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh clock
*16:01:11.185 JST Mon Sep 23 2019
SW1#
SW1#
SW1#
SW1#
SW1#sh clock detail 
*16:01:17.317 JST Mon Sep 23 2019
Time source is NTP
SW1#sh clock detail
16:01:20.572 JST Mon Sep 23 2019
Time source is NTP
SW1#sh clock detail
16:01:29.774 JST Mon Sep 23 2019
Time source is NTP
SW1#
SW1#
SW1#
SW1#
SW1#sh ntp asso    
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    103.1.106.69     2     47     64     7  1.883   0.443 1938.4
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#

NTP Symmetric Active / Passive Mode

SW1

configure terminal
!
vtp mode transparent
!
vlan 128
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
!
interface Loopback 0
 ip address 10.0.130.1 255.255.255.255
exit
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/24
 no switchport
 ip address 10.0.129.1 255.255.255.0
exit
!
router ospf 1
 network 10.0.128.1 0.0.0.0 area 0
 network 10.0.129.1 0.0.0.0 area 0
 network 10.0.130.1 0.0.0.0 area 0
exit
!
end

SW2

configure terminal
!
vtp mode transparent
!
vlan 128
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.2 255.255.255.0
exit
!
interface Loopback 0
 ip address 10.0.131.2 255.255.255.255
exit
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/24
 no switchport
 ip address 10.0.129.2 255.255.255.0
exit
!
router ospf 1
 network 10.0.128.2 0.0.0.0 area 0
 network 10.0.129.2 0.0.0.0 area 0
 network 10.0.131.2 0.0.0.0 area 0
exit
!
end

SW10

configure terminal
!
vtp mode transparent
!
vlan 128
exit
!
interface range FastEthernet 0/1 - 2
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface GigabitEthernet 0/1
 spanning-tree portfast trunk
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

SW1

configure terminal
!
clock timezone JST 9
!
ntp server 10.0.128.254
!
ntp peer 10.0.131.2 source Loopback 0 prefer
ntp master 7
!
end

SW2

configure terminal
!
clock timezone JST 9
!
ntp server 10.0.128.254
!
ntp peer 10.0.130.1 source Loopback 0 prefer
ntp master 7
!
end

configure terminal
!
no ntp server 10.0.128.254
!
end

show ntp associations
show ntp status

Console Log SW1

SW1#sh ip int b | i up
Vlan128                10.0.128.1      YES manual up                    up      
FastEthernet1/0/4      unassigned      YES unset  up                    up      
FastEthernet1/0/12     unassigned      YES unset  up                    up      
FastEthernet1/0/23     unassigned      YES unset  up                    up      
FastEthernet1/0/24     10.0.129.1      YES manual up                    up      
Loopback0              10.0.130.1      YES manual up                    up      
SW1#
*Mar  1 00:25:51.833: %OSPF-5-ADJCHG: Process 1, Nbr 10.0.131.2 on FastEthernet1/0/24 from LOADING to FULL, Loading Done
SW1#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Fa1/0/23    on               802.1q         trunking      1

Port        Vlans allowed on trunk
Fa1/0/23    128

Port        Vlans allowed and active in management domain
Fa1/0/23    128

Port        Vlans in spanning tree forwarding state and not pruned
Fa1/0/23    128
SW1#ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/2/8 ms
SW1#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C        10.0.128.0/24 is directly connected, Vlan128
L        10.0.128.1/32 is directly connected, Vlan128
C        10.0.129.0/24 is directly connected, FastEthernet1/0/24
L        10.0.129.1/32 is directly connected, FastEthernet1/0/24
C        10.0.130.1/32 is directly connected, Loopback0
O        10.0.131.2/32 [110/2] via 10.0.129.2, 00:01:14, FastEthernet1/0/24
                       [110/2] via 10.0.128.2, 00:14:11, Vlan128
SW1#ping 10.0.131.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.131.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/5/9 ms
SW1#ping 10.0.128.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/5/9 ms
SW1#ping 10.0.129.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.129.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/5/9 ms
SW1#ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#cloc
SW1(config)#clock time
SW1(config)#clock timezone JST 9
SW1(config)#
*Mar  1 00:29:59.062: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:29:59 UTC Mon Mar 1 1993 to 09:29:59 JST Mon Mar 1 1993, configured from console by console.
SW1(config)#ntp pee
SW1(config)#ntp serve
SW1(config)#ntp server 10.0.128.254
SW1(config)#  
SW1(config)#
SW1(config)#do sh clock
*09:30:35.897 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:37.516 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:38.195 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:38.841 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:39.411 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:40.317 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:41.039 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:41.643 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:42.238 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:42.809 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:43.430 JST Mon Mar 1 1993
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
*09:30:44.889 JST Mon Mar 1 1993
SW1(config)#do sh clock
*09:30:45.829 JST Mon Mar 1 1993
SW1(config)#do sh clock detail
*18:25:17.138 JST Mon Sep 23 2019
Time source is NTP
SW1(config)#do sh clock detail
*18:25:18.287 JST Mon Sep 23 2019
Time source is NTP
SW1(config)#do sh clock detail
*18:25:19.226 JST Mon Sep 23 2019
Time source is NTP
SW1(config)#do sh clock
18:25:39.032 JST Mon Sep 23 2019
SW1(config)#do sh clock
18:25:39.896 JST Mon Sep 23 2019
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp pee
SW1(config)#            
SW1(config)#
SW1(config)#ntp pee
SW1(config)#ntp peer 10.0.131.2 sour
SW1(config)#ntp peer 10.0.131.2 source Loo
SW1(config)#ntp peer 10.0.131.2 source Loopback 0 pre
SW1(config)#ntp peer 10.0.131.2 source Loopback 0 prefer 
SW1(config)#end
SW1#
Sep 23 09:26:30.806: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh ntp asso
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     43     64     3  2.267   0.348  0.048
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2      9     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     10     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     11     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh clock detail
18:27:14.394 JST Mon Sep 23 2019
Time source is NTP
SW1#sh clock detail
18:27:23.135 JST Mon Sep 23 2019
Time source is NTP
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      10.0.128.254     3      1     64     1  6.899   1.293 7937.5
*~10.0.128.254    103.1.106.69     2     37     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      10.0.128.254     3      1     64     1  6.606   1.440 3937.5
*~10.0.128.254    103.1.106.69     2     39     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      10.0.128.254     3      2     64     1  6.606   1.440 3937.5
*~10.0.128.254    103.1.106.69     2     40     64     7  1.107   1.309  0.442
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp stat
SW1#sh ntp status 
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E58.D3B65B9F (18:26:48.827 JST Mon Sep 23 2019)
clock offset is 1.3095 msec, root delay is 7.59 msec
root dispersion is 9.04 msec, peer dispersion is 1.39 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000005 s/s
system poll interval is 64, last update was 107 sec ago.
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#no ntp
SW1(config)#no ntp ser
SW1(config)#no ntp server 10.0.128.254
SW1(config)#end
SW1#
.Sep 23 09:29:24.979: %SYS-5-CONFIG_I: Configured from console by console
SW1# 
SW1#
SW1#
SW1#
SW1#sh clock
.18:29:32.051 JST Mon Sep 23 2019
SW1#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E58.D3B65B9F (18:26:48.827 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.72 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000005 s/s
system poll interval is 64, last update was 174 sec ago.
SW1#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E58.D3B65B9F (18:26:48.827 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.16 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000005 s/s
system poll interval is 64, last update was 203 sec ago.
SW1#sh ntp asso
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     28     64     6  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     43     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     44     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     45     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     46     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     47     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     47     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     48     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16     49     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      1     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      2     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      0     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      1     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      2     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.131.2      78.85.76.76     16      3     64    14  2.685  -0.746  0.296
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#conf t      
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#ntp mas
SW1(config)#ntp master 7
SW1(config)#end         
SW1#
Sep 23 09:32:43.697: %SYS-5-CONFIG_I: Configured from console by console
SW1#end
Translating "end"
% Unknown command or computer name, or unable to find computer address
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#sh ntp asso
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      1     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      1     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      5     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      1     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      2     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      7     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      3     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      8     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      4     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      9     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      5     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     10     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      6     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     11     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      7     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     12     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16      8     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     14     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16     10     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     15     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16     11     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     16     16     3  0.000   0.000 3937.5
 ~10.0.131.2      78.85.76.76     16     12     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      0     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     13     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      1     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     14     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      2     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     15     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      3     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     16     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      4     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     17     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      5     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     18     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     19     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     19     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      7     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     20     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      8     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     21     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      9     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     22     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     10     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     23     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     14     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     27     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     15     16     7  0.000   0.000 1937.6
 ~10.0.131.2      78.85.76.76     16     28     64    60  2.685  -0.746 191.11
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     10     16    17  0.000   0.000 937.68
 ~10.0.131.2      78.85.76.76     16     41     64   140  3.060  -0.933 442.00
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     12     16    17  0.000   0.000 937.68
 ~10.0.131.2      78.85.76.76     16     43     64   140  3.060  -0.933 442.00
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     14     16    17  0.000   0.000 937.68
 ~10.0.131.2      78.85.76.76     16     45     64   140  3.060  -0.933 442.00
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      1     16    37  0.000   0.000 437.70
 ~10.0.131.2      78.85.76.76     16     47     64   140  3.060  -0.933 442.00
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      3     16    37  0.000   0.000 437.70
 ~10.0.131.2      127.127.1.1      7      2     64   141  4.349  -1.578 441.93
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16    37  0.000   0.000 437.70
 ~10.0.131.2      127.127.1.1      7      1     64   141  3.332  -2.645 438.49
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      4     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      7     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      5     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      8     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      6     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      9     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      7     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     10     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      8     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     11     16    77  0.000   0.000 187.71
 ~10.0.131.2      127.127.1.1      7      9     64   141  3.332  -2.645  0.266
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#sh clock
18:34:30.979 JST Mon Sep 23 2019
SW1#sh clock
18:34:42.849 JST Mon Sep 23 2019
SW1#sh ntp status       
Clock is synchronized, stratum 7, reference is 127.127.1.1   
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E133103A.D5E7A782 (18:34:50.835 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.33 msec, peer dispersion is 0.23 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000005 s/s
system poll interval is 16, last update was 7 sec ago.
SW1#sh clock
18:35:11.320 JST Mon Sep 23 2019
SW1#sh clock detail
18:35:14.281 JST Mon Sep 23 2019
Time source is NTP
SW1#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      8     16   377  0.000   0.000  0.253
 ~10.0.131.2      127.127.1.1      7     23     64   303  2.629  -3.543  0.236
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#

Console Log SW2

SW2#sh ip int b | i up
Vlan1                  unassigned      YES NVRAM  up                    down    
Vlan128                10.0.128.2      YES manual up                    up      
FastEthernet1/0/23     unassigned      YES unset  up                    up      
FastEthernet1/0/24     10.0.129.2      YES manual up                    up      
Loopback0              10.0.131.2      YES manual up                    up      
SW2#
*Mar  1 00:25:42.765: %OSPF-5-ADJCHG: Process 1, Nbr 10.0.130.1 on FastEthernet1/0/24 from LOADING to FULL, Loading Done
SW2#sh int trunk

Port        Mode             Encapsulation  Status        Native vlan
Fa1/0/23    on               802.1q         trunking      1

Port        Vlans allowed on trunk
Fa1/0/23    128

Port        Vlans allowed and active in management domain
Fa1/0/23    128

Port        Vlans in spanning tree forwarding state and not pruned
Fa1/0/23    128
SW2#ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
SW2#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
       + - replicated route, % - next hop override

Gateway of last resort is not set

      10.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C        10.0.128.0/24 is directly connected, Vlan128
L        10.0.128.2/32 is directly connected, Vlan128
C        10.0.129.0/24 is directly connected, FastEthernet1/0/24
L        10.0.129.2/32 is directly connected, FastEthernet1/0/24
O        10.0.130.1/32 [110/2] via 10.0.129.1, 00:01:17, FastEthernet1/0/24
                       [110/2] via 10.0.128.1, 00:14:09, Vlan128
C        10.0.131.2/32 is directly connected, Loopback0
SW2#ping 10.0.130.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.130.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
SW2#ping 10.0.128.1  
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
SW2#ping 10.0.128.254  
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/8 ms
SW2#ping 10.0.129.1  
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.129.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
SW2#ping 10.0.130.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.130.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/8 ms
SW2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#cloc
SW2(config)#clock timezo
SW2(config)#clock timezone JST 9
SW2(config)#
*Mar  1 00:29:56.177: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:29:56 UTC Mon Mar 1 1993 to 09:29:56 JST Mon Mar 1 1993, configured from console by console.
SW2(config)#ntp server 10.0.128.254
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#do sh clock
*09:30:21.561 JST Mon Mar 1 1993
SW2(config)#do sh clock detail
18:25:25.453 JST Mon Sep 23 2019
Time source is NTP
SW2(config)#do sh clock detail
18:25:26.334 JST Mon Sep 23 2019
Time source is NTP
SW2(config)#do sh clock detail
18:25:26.854 JST Mon Sep 23 2019
Time source is NTP
SW2(config)#do sh clock
18:25:39.026 JST Mon Sep 23 2019
SW2(config)#do sh clock
18:25:39.898 JST Mon Sep 23 2019
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#ntp pee
SW2(config)#ntp peer 10.0.130.1 sour
SW2(config)#ntp peer 10.0.130.1 source Loo
SW2(config)#ntp peer 10.0.130.1 source Loopback 0 prefe
SW2(config)#ntp peer 10.0.130.1 source Loopback 0 prefer 
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#end
SW2#
Sep 23 09:26:32.268: %SYS-5-CONFIG_I: Configured from console by console
SW2#sh ntp asso
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     12     64     3  1.219   0.555 3937.9
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     33     64     3  1.219   0.555 3937.9
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 16000.
*~10.0.128.254    103.1.106.69     2     34     64     3  1.219   0.555 3937.9
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh clock detail
18:27:19.815 JST Mon Sep 23 2019
Time source is NTP
SW2#sh clock detail
18:27:21.040 JST Mon Sep 23 2019
Time source is NTP
SW2#sh clock detail
18:27:50.953 JST Mon Sep 23 2019
Time source is NTP
SW2#sh clock detail
18:27:51.666 JST Mon Sep 23 2019
Time source is NTP
SW2#sh clock detail
18:27:52.270 JST Mon Sep 23 2019
Time source is NTP
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     19     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     20     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     21     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     22     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     23     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     24     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     25     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     25     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     26     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     27     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     28     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     29     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     29     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     30     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     31     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     32     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     33     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      .INIT.          16      -     64     0  0.000   0.000 15937.
*~10.0.128.254    103.1.106.69     2     34     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      0     64     1  3.751   0.341 7937.7
*~10.0.128.254    103.1.106.69     2     35     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      1     64     1  3.751   0.341 7937.7
*~10.0.128.254    103.1.106.69     2     36     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      1     64     1  3.751   0.341 7937.7
*~10.0.128.254    103.1.106.69     2     36     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      0     64     1  2.437   0.998 3937.8
*~10.0.128.254    103.1.106.69     2     37     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      1     64     1  2.437   0.998 3937.8
*~10.0.128.254    103.1.106.69     2     38     64     7  1.219   0.555 1938.7
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp pee
SW2#sh ntp ?  
  associations  NTP associations
  status        NTP status

SW2#sh ntp sta
SW2#sh ntp status \
                  ^
% Invalid input detected at '^' marker.

SW2#sh ntp status  
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.5552 msec, root delay is 7.70 msec
root dispersion is 7943.17 msec, peer dispersion is 1938.73 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 184 sec ago.
SW2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#no ntp
SW2(config)#no ntp ser
SW2(config)#no ntp server 10.0.128.254
SW2(config)#end
SW2#
SW2#
SW2#
.Sep 23 09:29:26.500: %SYS-5-CONFIG_I: Configured from console by console
SW2#
SW2#
SW2#sh clock
.18:29:34.511 JST Mon Sep 23 2019
SW2#sh ntp stat
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.72 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 267 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.77 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 271 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.80 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 273 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.82 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 274 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.84 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 275 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.85 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 276 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.87 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 277 sec ago.
SW2#sh ntp status 
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1330E03.A8ED4AD4 (18:25:23.659 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.90 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 64, last update was 278 sec ago.
SW2#sh ntp asso
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     51     64     4  2.293   1.070  0.675
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     23     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     24     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     25     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     25     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     26     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     27     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     27     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     28     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     29     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     29     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     30     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      78.85.76.76     16     31     64    10  2.293   1.070 65.136
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#ntp mas
SW2#ntp master
SW2#conf t      
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#ntp mas
SW2(config)#ntp master 7
SW2(config)#end
SW2#
SW2#
SW2#
SW2#
.Sep 23 09:32:44.764: %SYS-5-CONFIG_I: Configured from console by console
SW2#
SW2#
SW2#
SW2#
SW2#
SW2#sh ntp asso
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      7     16     1  0.000   0.000 7937.5
 ~10.0.130.1      127.127.1.1      7      1     64    43  2.227   2.779 189.48
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      8     16     1  0.000   0.000 7937.5
 ~10.0.130.1      127.127.1.1      7      0     64    43  2.024   2.881 188.70
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6     12     16     1  0.000   0.000 7937.5
 ~10.0.130.1      127.127.1.1      7      2     64    43  2.024   2.881 188.12
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      2     16    17  0.000   0.000 937.66
 ~10.0.130.1      127.127.1.1      7     29     64   106  2.024   2.881  0.705
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      3     16    17  0.000   0.000 937.66
 ~10.0.130.1      127.127.1.1      7     30     64   106  2.024   2.881  0.705
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      4     16    17  0.000   0.000 937.66
 ~10.0.130.1      127.127.1.1      7     31     64   106  2.024   2.881  0.705
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      5     16    17  0.000   0.000 937.66
 ~10.0.130.1      127.127.1.1      7     32     64   106  2.024   2.881  0.705
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      6     16    17  0.000   0.000 937.66
 ~10.0.130.1      127.127.1.1      7     33     64   106  2.024   2.881  0.705
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh clock
18:34:27.827 JST Mon Sep 23 2019
SW2#sh clock
18:34:42.851 JST Mon Sep 23 2019
SW2#sh ntp status
Clock is synchronized, stratum 7, reference is 127.127.1.1   
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1331039.A9BCAFA9 (18:34:49.663 JST Mon Sep 23 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 187.97 msec, peer dispersion is 187.72 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000002 s/s
system poll interval is 16, last update was 17 sec ago.
SW2#sh ntp detail
           ^
% Invalid input detected at '^' marker.

SW2#sh ntp asso  

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           6      2     16   377  0.000   0.000  0.240
 ~10.0.130.1      127.127.1.1      7     29     64   217  2.250   3.353  0.389
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#

I can't understand this feature…

[Incomplete Lab] NTP Broadcast Mode

This Lab is incomplete because lack of feature Catalyst 3750…

SW1

configure terminal
!
vtp mode transparent
!
vlan 128
exit
vlan 129
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.1 255.255.255.0
exit
!
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 129
exit
interface range FastEthernet 1/0/4 - 6
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129
exit
interface FastEthernet 1/0/23
 spanning-tree portfast
 switchport mode access
 switchport access vlan 128
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

SW2 - SW4

configure terminal
!
vtp mode transparent
!
vlan 129
exit
!
ip routing
!
interface Vlan 129
 ip address 10.0.129.2 255.255.255.0
exit
!
interface FastEthernet 1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129
exit
!
end

R1

configure terminal
!
interface FastEthernet 0/0
 ip address 10.0.129.11 255.255.255.0
 no shutdown
exit
interface FastEthernet 0/1
 ip address 10.0.128.11 255.255.255.0
 no shutdown
exit
!
end

R1 - R3

configure terminal
!
interface FastEthernet 0/0
 ip address 10.0.129.11 255.255.255.0
 no shutdown
exit
!
end

R1

configure terminal
!
clock timezone JST 9
!
ntp server 10.0.128.254
!
interface range FastEthernet 1/0/1 - 6
 ntp broadcast version 3
exit
!
end

R2, R3

configure terminal
!
clock timezone JST 9
!
int f0/0
 ntp broadcast client
!
end

show ntp associations
show ntp status

May be ntp broadcast is not supported in Catalyst 3750 w/ 15.0

I'll use router.

ntp broadcast packet not observed….

ntp version default to 4? ntp version mismatch?

NTP Broadcast Mode

This Lab uses Cisco ISR 1841. IOS 15.x

SW1

configure terminal
!
vtp mode transparent
!
vlan 128
exit
vlan 129
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.1 255.255.255.0
exit
!
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 129
exit
interface FastEthernet 1/0/23
 spanning-tree portfast
 switchport mode access
 switchport access vlan 128
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

R1

configure terminal
!
interface FastEthernet 0/0
 ip address 10.0.129.11 255.255.255.0
 no shutdown
exit
interface FastEthernet 0/1
 ip address 10.0.128.11 255.255.255.0
 no shutdown
exit
!
end

R2

configure terminal
!
interface FastEthernet 0/0
 ip address 10.0.129.12 255.255.255.0
 no shutdown
exit
!
end

R3

configure terminal
!
interface FastEthernet 0/0
 ip address 10.0.129.13 255.255.255.0
 no shutdown
exit
!
end

R1

configure terminal
!
clock timezone JST 9
!
ntp server 10.0.128.254
!
interface FastEthernet 0/0
 ntp broadcast version 3
exit
!
end

R2, R3

configure terminal
!
clock timezone JST 9
!
int f0/0
 ntp broadcast client
!
end

show ntp associations
show ntp status

May be ntp broadcast is not supported in Catalyst 3750 w/ 15.0

I'll use router.

ntp broadcast packet not observed….

ntp version default to 4? ntp version mismatch?

R1 Console Log

R1

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#interface FastEthernet 0/0
R1(config-if)# ip address 10.0.129.11 255.255.255.0
R1(config-if)# no shutdown
R1(config-if)#exit
R1(config)#interface FastEthernet 0/1
R1(config-if)# ip address 10.0.128.11 255.255.255.0
R1(config-if)# no shutdown
R1(config-if)#exit
R1(config)#
Jan  2 12:52:56.727: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
Jan  2 12:52:56.847: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up
Jan  2 12:52:57.727: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config)#
Jan  2 12:52:57.847: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
R1(config)#clo
R1(config)#clock ti
R1(config)#clock timezone JSt 9
R1(config)#
Jan  2 12:53:19.747: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:53:19 UTC Mon Jan 2 2006 to 21:53:19 JSt Mon Jan 2 2006, configured from console by console.
R1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
R1(config)#do ping 10.0.12.12  
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.12.12, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1(config)#do ping 10.0.129.12
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.129.12, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
R1(config)#do ping 10.0.129.13
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.129.13, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/4 ms
R1(config)#no clock timezone JSt 9
R1(config)#no clock timezone JSt 9
Jan  2 12:54:10.963: %SYS-6-CLOCKUPDATE: System clock has been updated from 21:54:10 JSt Mon Jan 2 2006 to 12:54:10 UTC Mon Jan 2 2006, configured from console by console.
R1(config)#clock timezone JST 9   
R1(config)#
Jan  2 12:54:15.679: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:54:15 UTC Mon Jan 2 2006 to 21:54:15 JST Mon Jan 2 2006, configured from console by console.
R1(config)#
R1(config)#
R1(config)#
R1(config)#
R1(config)#do sh lock
sh lock
      ^
% Invalid input detected at '^' marker.

R1(config)#do sh clock
21:54:41.339 JST Mon Jan 2 2006
R1(config)#ntp ser
R1(config)#ntp server 10.0.128.254
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0077 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.11 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000031027 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1(config)#do sh clock
21:55:39.435 JST Mon Jan 2 2006
R1(config)#do sh clock
21:55:40.675 JST Mon Jan 2 2006
R1(config)#do sh clock
21:55:41.299 JST Mon Jan 2 2006
R1(config)#do sh clock\
sh clock\
        ^
% Invalid input detected at '^' marker.

R1(config)#do sh clock detail
21:55:45.094 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:46.514 JST Mon Jan 2 2006
Time source is NTP
R1(config)#
R1(config)#do sh clock detail
21:55:47.954 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:49.026 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:49.698 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:50.394 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:51.098 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:52.010 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:52.650 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:53.218 JST Mon Jan 2 2006
Time source is NTP
R1(config)#do sh clock detail
21:55:53.890 JST Mon Jan 2 2006
Time source is NTP
R1(config)#
R1(config)#
R1(config)#
R1(config)#debu
R1(config)#do debug ntp eve
R1(config)#do debug ntp events
NTP events debugging is on
R1(config)#
R1(config)#
R1(config)#
R1(config)#
R1(config)#
R1(config)#do sh clock
13:43:17.342 JST Sat Sep 28 2019
R1(config)#do sh clock
13:43:27.061 JST Sat Sep 28 2019
R1(config)#int ran
R1(config)#int f0/0    
R1(config-if)#ntp bro
R1(config-if)#ntp broadcast 
R1(config-if)#do sh clock
13:50:15.163 JST Sat Sep 28 2019
R1(config-if)#end       
R1#sh run 
Sep 28 04:54:33.397: %SYS-5-CONFIG_I: Configured from console by console
R1#sh run | i ntp 
 ntp broadcast
ntp server 10.0.128.254
R1#

R2 Console Log

R2

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#interface FastEthernet 0/0
R2(config-if)# ip address 10.0.129.12 255.255.255.0
R2(config-if)# no shutdown
R2(config-if)#exit
R2(config)#
Jan  2 12:52:00.447: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
Jan  2 12:52:01.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R2(config)#clo
R2(config)#clock ti
R2(config)#clock timezone JST 9
R2(config)#
Jan  2 12:53:19.483: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:53:19 UTC Mon Jan 2 2006 to 21:53:19 JST Mon Jan 2 2006, configured from console by console.
R2(config)#do sh clock
21:53:39.731 JST Mon Jan 2 2006
R2(config)#do sh lock
sh lock
      ^
% Invalid input detected at '^' marker.

R2(config)#do sh clock
21:57:05.119 JST Mon Jan 2 2006
R2(config)#ntp bro
R2(config)#int f0/0            
R2(config-if)#ntp bro
R2(config-if)#ntp broadcast cli
R2(config-if)#ntp broadcast client 
R2(config-if)#do sh clcok
sh clcok
     ^
% Invalid input detected at '^' marker.

R2(config-if)#do sh clock
13:49:09.432 JST Sat Sep 28 2019
R2(config-if)#do sh clock detail
13:49:14.603 JST Sat Sep 28 2019
Time source is NTP
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* 10.0.129.11     10.0.128.254     3     14     64     3  1.996   2.931  0.524
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 10.0.129.11   
nominal freq is 250.0000 Hz, actual freq is 250.0134 Hz, precision is 2**24
reference time is E13964D9.E374E6E6 (13:49:29.888 JST Sat Sep 28 2019)
clock offset is 2.9312 msec, root delay is 56.10 msec
root dispersion is 17.25 msec, peer dispersion is 0.52 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000053593 s/s
system poll interval is 64, last update was 19 sec ago.
R2(config-if)#do sh clock
13:50:15.160 JST Sat Sep 28 2019
R2(config-if)#end
R2#
Sep 28 04:54:47.451: %SYS-5-CONFIG_I: Configured from console by console
R2#

R3 Console Log

R3

R3#conft 
Translating "conft"

Translating "conft"

% Bad IP address or host name
% Unknown command or computer name, or unable to find computer address
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#interface FastEthernet 0/0
R3(config-if)# ip address 10.0.129.13 255.255.255.0
R3(config-if)# no shutdown
R3(config-if)#exit
R3(config)#
Jan  2 12:52:06.251: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R3(config)#clo
R3(config)#clock tim
R3(config)#clock timezone JST 9
R3(config)#
Jan  2 12:53:21.975: %SYS-6-CLOCKUPDATE: System clock has been updated from 12:53:21 UTC Mon Jan 2 2006 to 21:53:21 JST Mon Jan 2 2006, configured from console by console.
R3(config)#do sh clok
sh clok
      ^
% Invalid input detected at '^' marker.

R3(config)#do sh clock
21:53:44.239 JST Mon Jan 2 2006
R3(config)#do sh clock
21:56:58.151 JST Mon Jan 2 2006
R3(config)#int f0/0
R3(config-if)#ntp broa
R3(config-if)#ntp broadcast cli
R3(config-if)#ntp broadcast client 
R3(config-if)#do sh clock detail
13:49:20.919 JST Sat Sep 28 2019
Time source is NTP
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* 10.0.129.11     10.0.128.254     3      9     64     3  1.997   5.021  0.607
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 10.0.129.11   
nominal freq is 250.0000 Hz, actual freq is 250.0202 Hz, precision is 2**24
reference time is E13964D9.E231476B (13:49:29.883 JST Sat Sep 28 2019)
clock offset is 5.0216 msec, root delay is 56.10 msec
root dispersion is 20.40 msec, peer dispersion is 0.60 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000080811 s/s
system poll interval is 64, last update was 25 sec ago.
R3(config-if)#do sh clock
13:50:15.155 JST Sat Sep 28 2019
R3(config-if)#end
R3#
Sep 28 04:54:48.724: %SYS-5-CONFIG_I: Configured from console by console
R3#

NTP Multicast Mode

Cisco IOS IPv6 Command Reference - mpls traffic-eng auto-bw timers through route-map [Support & Downloads] - Cisco

SW1

configure terminal
!
vtp mode transparent
!
vlan 128
exit
vlan 129
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.1 255.255.255.0
exit
!
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 129
exit
interface range FastEthernet 1/0/4 - 6
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129
exit
interface FastEthernet 1/0/23
 spanning-tree portfast
 switchport mode access
 switchport access vlan 128
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

R1

ipv6 unicast-routing
!
ntp server 10.0.128.254
!
int f0/1
 ip address 10.0.128.11 255.255.255.0
 no shutdown
int f0/0
 ipv6 enable
 ipv6 address fe80::1 link-local
 ntp multicast version 4 ff02::1

R2

ipv6 unicast-routing
!
int f0/0
 ipv6 enable
 ipv6 address fe80::2 link-local
 ntp multicast client ff02::1
 no shutdown

R3

ipv6 unicast-routing
!
int f0/0
 ipv6 enable
 ipv6 address fe80::3 link-local
 ntp multicast client ff02::1
 no shutdown

Console Log

SW1#
*Mar  1 00:04:28.938: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan128, changed state to down
*Mar  1 00:04:28.989: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan129, changed state to down
*Mar  1 00:04:29.903: %SYS-5-CONFIG_I: Configured from console by console
SW1#
*Mar  1 00:04:30.910: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/24, changed state to down
SW1#
*Mar  1 00:04:33.896: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/24, changed state to up
SW1#
*Mar  1 00:04:59.129: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan129, changed state to up
SW1#
*Mar  1 00:05:02.912: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan128, changed state to up
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#interface range FastEthernet 1/0/1 - 3
SW1(config-if-range)# spanning-tree portfast
%Warning: portfast should only be enabled on ports connected to a single
 host. Connecting hubs, concentrators, switches, bridges, etc... to this
 interface  when portfast is enabled, can cause temporary bridging loops.
 Use with CAUTION

%Portfast will be configured in 3 interfaces due to the range command 
 but will only have effect when the interfaces are in a non-trunking mode.
SW1(config-if-range)# switchport mode access
SW1(config-if-range)# switchport access vlan 129
SW1(config-if-range)#exit
SW1(config)#interface FastEthernet 1/0/23
SW1(config-if)# spanning-tree portfast
%Warning: portfast should only be enabled on ports connected to a single
 host. Connecting hubs, concentrators, switches, bridges, etc... to this
 interface  when portfast is enabled, can cause temporary bridging loops.
 Use with CAUTION

%Portfast has been configured on FastEthernet1/0/23 but will only
 have effect when the interface is in a non-trunking mode.
SW1(config-if)# switchport mode access
SW1(config-if)#end
SW1#
*Mar  1 00:05:29.806: %SYS-5-CONFIG_I: Configured from console by console
SW1#
*Mar  1 00:06:58.960: %LINK-3-UPDOWN: Interface FastEthernet1/0/23, changed state to up
*Mar  1 00:06:59.967: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/23, changed state to up
SW1#conft
Translating "conft"
% Unknown command or computer name, or unable to find computer address
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#ipv6 unicast-rou
SW1(config)#ipv6 unicast-rou
              ^
% Invalid input detected at '^' marker.

SW1(config)#ipv
SW1(config)#ipv6
SW1(config)#ipv6
SW1(config)#ipv6
SW1(config)#ipv6
SW1(config)#ipv6
SW1(config)#ipv6 ?
% Unrecognized command
SW1(config)#monito
SW1(config)#monitor se
SW1(config)#monitor session 1 sou
SW1(config)#monitor session 1 source int f1/0/23
SW1(config)#monitor session 2 des               
SW1(config)#monitor session 2 destination int f1/0/12
SW1(config)#monitor session 2 destination int f1/0/12 rep
SW1(config)#monitor session 2 destination int f1/0/12 enca
SW1(config)#monitor session 2 destination int f1/0/12 encapsulation rep
SW1(config)#$sion 2 destination int f1/0/12 encapsulation replicate 
SW1(config)#
*Mar  1 00:20:02.095: %LINK-3-UPDOWN: Interface FastEthernet1/0/2, changed state to up
*Mar  1 00:20:03.102: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/2, changed state to up
SW1(config)#
*Mar  1 00:20:04.016: %LINK-3-UPDOWN: Interface FastEthernet1/0/3, changed state to up
*Mar  1 00:20:05.023: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/3, changed state to up
SW1(config)#do sh run | i monitor session
monitor session 1 source interface Fa1/0/23
monitor session 2 destination interface Fa1/0/12 encapsulation replicate
SW1(config)#$session 2 destination interface Fa1/0/12 encapsulation replicate
SW1(config)#monitor session 1 destination interface Fa1/0/12 encapsulation rep$
SW1(config)#no monitor session 1 source interface Fa1/0/23
SW1(config)#monitor session 1 source interface Fa1/0/1 
SW1(config)#                                              
*Mar  1 01:00:49.430: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/3, changed state to down
*Mar  1 01:00:50.436: %LINK-3-UPDOWN: Interface FastEthernet1/0/3, changed state to down
SW1(config)#
*Mar  1 01:00:57.424: %LINK-3-UPDOWN: Interface FastEthernet1/0/3, changed state to up
*Mar  1 01:00:58.431: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/3, changed state to up
SW1(config)#

R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#end
R1#set clo
R1#set clo
*Sep 27 21:56:19.383: %SYS-5-CONFIG_I: Configured from console by console
R1#clock  
R1#clock set
R1#clock set ?
  hh:mm:ss  Current Time

R1#clock set 00:00:00 ?
  <1-31>  Day of the month
  MONTH   Month of the year

R1#clock set 00:00:00 1 Sep ?
  <1993-2035>  Year

R1#clock set 00:00:00 1 Sep 2000 ?
  <cr>

R1#clock set 00:00:00 1 Sep 2000 
R1#
*Sep  1 00:00:00.003: %SYS-6-CLOCKUPDATE: System clock has been updated from 21:57:21 UTC Fri Sep 27 2019 to 00:00:00 UTC Fri Sep 1 2000, configured from console by console.
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ntp tim
R1(config)#ntp time
R1(config)#cloc    
R1(config)#clock tim
R1(config)#clock timezone JST 9
R1(config)#
Sep  1 00:00:20.727: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:00:20 UTC Fri Sep 1 2000 to 09:00:20 JST Fri Sep 1 2000, configured from console by console.
R1(config)#end
R1#
Sep  1 00:00:23.303: %SYS-5-CONFIG_I: Configured from console by console
R1#sh clock
09:00:26.091 JST Fri Sep 1 2000
R1#sh clcok detail
        ^
% Invalid input detected at '^' marker.

R1#sh clock detail
09:00:36.383 JST Fri Sep 1 2000
Time source is user configuration
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#upda
R1(config)#ntp up
R1(config)#end                 
R1#
Sep  1 00:00:51.935: %SYS-5-CONFIG_I: Configured from console by console
R1#clo
R1#clock ?
  read-calendar    Read the hardware calendar into the clock
  set              Set the time and date
  update-calendar  Update the hardware calendar from the clock

R1#clock upda
R1#clock update-calendar 
R1#sh cale
R1#sh calendar 
09:01:05 JST Fri Sep 1 2000
R1#sh clock              
09:01:15.695 JST Fri Sep 1 2000
R1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R1(config)#ntp ser
R1(config)#ntp server 10.0.128.254
R1(config)#int f0/0
R1(config-if)#ip add
R1(config-if)#ip address 10.0.128.11 255.255.255.0
R1(config-if)#no shut
R1(config-if)#exit
R1(config)#p   
Sep  1 00:02:07.995: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
Sep  1 00:02:08.995: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config)#do ping 10.0.128.254 
Sep  1 00:02:15.571: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
R1(config)#do ping 10.0.128.254 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1(config)#
Sep  1 00:05:57.152: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R1(config)#
R1(config)#
R1(config)#
R1(config)#
R1(config)#do sh clock
09:07:55.266 JST Fri Sep 1 2000
R1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
R1(config)#int f0/0
R1(config-if)#no ip add
R1(config-if)#no ip address 
R1(config-if)#exit
R1(config)#int f0/1
R1(config-if)#ip add
R1(config-if)#ip address 10.0.128.11 255.255.255.0
R1(config-if)#no shut
R1(config-if)#exi
Sep  1 00:11:17.335: %LINK-3-UPDOWN: Interface FastEthernet0/1, changed state to up
Sep  1 00:11:18.335: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1, changed state to up
R1(config-if)#exit
R1(config)#do ping 10.0.128.254                
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
R1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R1(config)#do sh clock
09:11:33.275 JST Fri Sep 1 2000
R1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    10.84.87.146     2     18     64     1  1.211 5596522 7937.5
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    10.84.87.146     2     19     64     1  1.211 5596522 7937.5
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.22 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh clock     
09:11:58.594 JST Fri Sep 1 2000
R1(config)#do sh clock
09:11:59.954 JST Fri Sep 1 2000
R1(config)#do sh clock
09:12:00.834 JST Fri Sep 1 2000
R1(config)#do sh clock
09:12:01.802 JST Fri Sep 1 2000
R1(config)#do sh clock
09:12:02.786 JST Fri Sep 1 2000
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.37 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.43 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.45 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.50 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.53 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.58 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.63 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000014548 s/s
system poll interval is 64, never updated.
R1(config)#do sh clock     
07:11:17.967 JST Sat Sep 28 2019
R1(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 250.0000 Hz, actual freq is 250.0036 Hz, precision is 2**24
reference time is E1390787.D03674CD (07:11:19.813 JST Sat Sep 28 2019)
clock offset is -7.8508 msec, root delay is 54.43 msec
root dispersion is 3945.64 msec, peer dispersion is 3937.51 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000014578 s/s
system poll interval is 64, last update was 2 sec ago.
R1(config)#do sh clock     
07:11:23.503 JST Sat Sep 28 2019
R1(config)#do sh clock detail
07:11:28.719 JST Sat Sep 28 2019
Time source is NTP
R1(config)#do sh clock       
07:11:34.175 JST Sat Sep 28 2019
R1(config)#do sh clock
07:11:36.191 JST Sat Sep 28 2019
R1(config)#do sh clock
07:11:37.551 JST Sat Sep 28 2019
R1(config)#do sh clock
07:11:38.703 JST Sat Sep 28 2019
R1(config)#do sh clock
07:11:40.327 JST Sat Sep 28 2019
R1(config)#int f0/0
R1(config-if)#ip add
R1(config-if)#ip address 10.0.129.11 255.255.255.0
R1(config-if)#ntp mul
R1(config-if)#ntp multicast ?
  A.B.C.D     Multicast group IP address
  X:X:X:X::X  Multicast group IPv6 address
  client      Listen to NTP multicasts
  key         Configure multicast authentication key
  ttl         TTL of the multicast packet
  version     Configure NTP version
  <cr>

R1(config-if)#ntp multicast ver
R1(config-if)#ntp multicast version ?
  <1-4>  NTP version number

R1(config-if)#ntp bro               
R1(config-if)#ntp broadcast ver
R1(config-if)#ntp broadcast version ?
  <1-4>  NTP version number

R1(config-if)#ntp multi             
R1(config-if)#ntp multicast ve
R1(config-if)#ntp multicast version ?
  <1-4>  NTP version number

R1(config-if)#ntp multicast version 4 ?
  A.B.C.D     Multicast group IP address
  X:X:X:X::X  Multicast group IPv6 address
  key         Configure multicast authentication key
  ttl         TTL of the multicast packet
  <cr>

R1(config-if)#exit                           
R1(config)#ipv
R1(config)#ipv6 en
R1(config)#ipv6 unica
R1(config)#ipv6 unicast-routing 
R1(config)#conft
               ^
% Invalid input detected at '^' marker.

R1(config)#conf t
                ^
% Invalid input detected at '^' marker.

R1(config)#ipv6 unicast-rou
R1(config)#ipv6 unicast-routing 
R1(config)#int f0/1
R1(config-if)#do sh ip int bri
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            10.0.129.11     YES manual up                    up      
FastEthernet0/1            10.0.128.11     YES manual up                    up      
Serial0/0/0                unassigned      YES NVRAM  administratively down down    
R1(config-if)#int f0/0
R1(config-if)#no ip add
R1(config-if)#no ip address 
R1(config-if)#do sh ip int b
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES manual up                    up      
FastEthernet0/1            10.0.128.11     YES manual up                    up      
Serial0/0/0                unassigned      YES NVRAM  administratively down down    
R1(config-if)#ipv
R1(config-if)#ipv6 en
R1(config-if)#ipv6 enable 
R1(config-if)#ipv6 uni
R1(config-if)#do sh ipv6 int bri
FastEthernet0/0            [up/up]
    FE80::21B:2AFF:FE77:66D2
FastEthernet0/1            [up/up]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R1(config-if)#do ping?
% Ambiguous command:  "do ping"
R1(config-if)#do ping FE80::224:C4FF:FE31:126E 
Output Interface: FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::224:C4FF:FE31:126E, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
.....
Success rate is 0 percent (0/5)
R1(config-if)#do ping FE80::224:C4FF:FE31:126E%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::224:C4FF:FE31:126E, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/8 ms
R1(config-if)#do ping FE80::224:C4FF:FE31:126E%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::224:C4FF:FE31:126E, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/0/4 ms
R1(config-if)#do ping FE80::221:A0FF:FE09:487C%Fa             
% Ambiguous command:  "do ping FE80::221:A0FF:FE09:487C%Fa"
R1(config-if)#do ping FE80::221:A0FF:FE09:487C%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::221:A0FF:FE09:487C, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/2/8 ms
R1(config-if)#do ping fe80::1%FastEthernet0/0                 
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::1, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
...
Success rate is 0 percent (0/3)
R1(config-if)#do ping fe80::2%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::2, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/1/4 ms
R1(config-if)#do ping fe80::3%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::3, timeout is 2 seconds:
Packet sent with a source address of FE80::21B:2AFF:FE77:66D2%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/1/4 ms
R1(config-if)#ipv6 add
R1(config-if)#ipv6 address fe80::1 link
R1(config-if)#ipv6 address fe80::1 link-local 
R1(config-if)#do sh ipv6 int bri
FastEthernet0/0            [up/up]
    FE80::1
FastEthernet0/1            [up/up]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R1(config-if)#ntp mutl
R1(config-if)#ntp multi
R1(config-if)#ntp multicast ver
R1(config-if)#ntp multicast version 4
R1(config-if)#do sh nt               
% Ambiguous command:  "do sh nt"
R1(config-if)#no ntp multicast version 4 
R1(config-if)#ntp multicast version 4 ff02::1
R1(config-if)#

R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#end
R2#set 
*Sep 27 21:57:05.667: %SYS-5-CONFIG_I: Configured from console by console
R2#set clo
R2#clock  
R2#clock set
R2#clock set ?
  hh:mm:ss  Current Time

R2#clock set 00:00:00 ?
  <1-31>  Day of the month
  MONTH   Month of the year

R2#clock set 00:00:00 1 Sep ?
  <1993-2035>  Year

R2#clock set 00:00:00 1 Sep 2000 ?
  <cr>

R2#clock set 00:00:00 1 Sep 2000 
R2#
*Sep  1 00:00:00.003: %SYS-6-CLOCKUPDATE: System clock has been updated from 21:58:06 UTC Fri Sep 27 2019 to 00:00:00 UTC Fri Sep 1 2000, configured from console by console.
R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ntp tim
R2(config)#ntp time
R2(config)#cloc    
R2(config)#clock tim
R2(config)#clock timezone JST 9
R2(config)#
Sep  1 00:00:20.731: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:00:20 UTC Fri Sep 1 2000 to 09:00:20 JST Fri Sep 1 2000, configured from console by console.
R2(config)#end
R2#sh
Sep  1 00:00:23.303: %SYS-5-CONFIG_I: Configured from console by console
R2#sh clock
09:00:26.091 JST Fri Sep 1 2000
R2#sh clcok detail
        ^
% Invalid input detected at '^' marker.

R2#sh clock detail
09:00:36.383 JST Fri Sep 1 2000
Time source is user configuration
R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#upda
R2(config)#ntp up
R2(config)#end                 
R2#
Sep  1 00:00:51.935: %SYS-5-CONFIG_I: Configured from console by console
R2#clo
R2#clock ?
  read-calendar    Read the hardware calendar into the clock
  set              Set the time and date
  update-calendar  Update the hardware calendar from the clock

R2#clock upda
R2#clock update-calendar 
R2#sh cale
R2#sh calendar 
09:01:05 JST Fri Sep 1 2000
R2#sh clock              
09:01:15.699 JST Fri Sep 1 2000
R2#sh clock
09:13:58.759 JST Fri Sep 1 2000
R2#conft
Translating "conft"

Translating "conft"

% Bad IP address or host name
% Unknown command or computer name, or unable to find computer address
R2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R2(config)#ipv6 unicast-rou
R2(config)#ipv6 unicast-routing 
R2(config)#no ip add
R2(config)#int f0/0           
R2(config-if)#no ip add
R2(config-if)#do sh ip int b
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES NVRAM  administratively down down    
FastEthernet0/1            unassigned      YES NVRAM  administratively down down    
Serial0/0/0                unassigned      YES NVRAM  administratively down down    
R2(config-if)#ipv6 ena
R2(config-if)#ipv6 enable 
R2(config-if)#do sh ipv6 int b 
FastEthernet0/0            [administratively down/down]
    FE80::224:C4FF:FE31:126E
FastEthernet0/1            [administratively down/down]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R2(config-if)#no shut
R2(config-if)#
Sep  1 00:24:20.567: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
Sep  1 00:24:21.567: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R2(config-if)#ipv
R2(config-if)#ipv6 add
R2(config-if)#ipv6 address fe80::2 link
R2(config-if)#ipv6 address fe80::2 link-local 
R2(config-if)#do sh ipv6 int bri
FastEthernet0/0            [up/up]
    FE80::2
FastEthernet0/1            [administratively down/down]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R2(config-if)#ntp mul
R2(config-if)#ntp multicast cli
R2(config-if)#ntp multicast client ?
  A.B.C.D     Multicast client IP address
  X:X:X:X::X  Multicast client IPv6 address
  <cr>

R2(config-if)#ntp multicast client 
R2(config-if)#do sh clock
09:43:31.859 JST Fri Sep 1 2000
R2(config-if)#do sh clock
09:45:03.727 JST Fri Sep 1 2000
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh clock
09:45:41.223 JST Fri Sep 1 2000
R2(config-if)#do sh clock
09:50:00.495 JST Fri Sep 1 2000
R2(config-if)#do sh clock
09:51:06.387 JST Fri Sep 1 2000
R2(config-if)#do sh clock
09:51:07.371 JST Fri Sep 1 2000
R2(config-if)#ntp multicast client ?
  A.B.C.D     Multicast client IP address
  X:X:X:X::X  Multicast client IPv6 address
  <cr>

R2(config-if)#no ntp multicast client  
R2(config-if)#ntp multicast client version 4 ff02::1
                                   ^
% Invalid input detected at '^' marker.

R2(config-if)#ntp multicast client ?                 
  A.B.C.D     Multicast client IP address
  X:X:X:X::X  Multicast client IPv6 address
  <cr>

R2(config-if)#ntp multicast client ff02::1
R2(config-if)#do sh clock
09:53:17.119 JST Fri Sep 1 2000
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
  FE80::1         .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh clock
09:53:36.263 JST Fri Sep 1 2000
R2(config-if)#do sh clock
07:52:02.770 JST Sat Sep 28 2019
R2(config-if)#do sh clock
07:52:18.290 JST Sat Sep 28 2019
R2(config-if)#do sh clock
07:52:34.490 JST Sat Sep 28 2019
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
  FE80::1         .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
  FE80::1         .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3      1     64     1  1.475  -8.281  0.104
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is E1391162.AD0158F6 (07:53:22.675 JST Sat Sep 28 2019)
clock offset is -8.2813 msec, root delay is 55.79 msec
root dispersion is 87.90 msec, peer dispersion is 0.10 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000038 s/s
system poll interval is 64, last update was 6 sec ago.
R2(config-if)#do sh ntp assoc 

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3     31     64     1  1.475  -8.281  0.104
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3      5     64     3  1.475 -13.693  0.539
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3      6     64     3  1.475 -13.693  0.539
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is E13911A4.ACF31593 (07:54:28.675 JST Sat Sep 28 2019)
clock offset is -13.6938 msec, root delay is 55.79 msec
root dispersion is 100.05 msec, peer dispersion is 0.53 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000091 s/s
system poll interval is 64, last update was 25 sec ago.
R2(config-if)#do sh clock     
07:57:02.979 JST Sat Sep 28 2019
R2(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is E1391227.ACA2CA6D (07:56:39.674 JST Sat Sep 28 2019)
clock offset is -22.6755 msec, root delay is 55.79 msec
root dispersion is 118.55 msec, peer dispersion is 0.85 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000248 s/s
system poll interval is 64, last update was 26 sec ago.
R2(config-if)#do sh ntp status | i is sync
Clock is synchronized, stratum 4, reference is 137.229.48.31 
R2(config-if)#do sh ntp status | i is sync
Clock is synchronized, stratum 4, reference is 137.229.48.31 
R2(config-if)#do sh ntp status | i is sync
Clock is synchronized, stratum 4, reference is 137.229.48.31 
R2(config-if)#do sh ntp status | i is sync
Clock is synchronized, stratum 4, reference is 137.229.48.31 
R2(config-if)#do sh ntp status            
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0001 Hz, precision is 2**24
reference time is E1391267.AC661056 (07:57:43.673 JST Sat Sep 28 2019)
clock offset is -26.3058 msec, root delay is 55.79 msec
root dispersion is 125.64 msec, peer dispersion is 0.89 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000348 s/s
system poll interval is 64, last update was 53 sec ago.
R2(config-if)#do sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0001 Hz, precision is 2**24
reference time is E1391267.AC661056 (07:57:43.673 JST Sat Sep 28 2019)
clock offset is -26.3058 msec, root delay is 55.79 msec
root dispersion is 125.69 msec, peer dispersion is 0.89 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000348 s/s
system poll interval is 64, last update was 56 sec ago.
R2(config-if)#do sh run | i ntp|clock
clock timezone JST 9 0
 ntp multicast client FF02::1
 clock rate 2000000
R2(config-if)#end
R2#sh nt
Sep 27 23:06:51.410: %SYS-5-CONFIG_I: Configured from console by console
R2#sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0004 Hz, precision is 2**24
reference time is E139146E.A8574287 (08:06:22.657 JST Sat Sep 28 2019)
clock offset is -52.5260 msec, root delay is 55.82 msec
root dispersion is 155.35 msec, peer dispersion is 0.94 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000001593 s/s
system poll interval is 64, last update was 31 sec ago.
R2#sh clock
12:33:20.219 JST Sat Sep 28 2019
R2#sh clock
12:33:24.119 JST Sat Sep 28 2019
R2#sh clock
12:34:13.226 JST Sat Sep 28 2019
R2#sh clock detail
12:34:17.202 JST Sat Sep 28 2019
Time source is NTP
R2#sh ntp asso
R2#sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3     38     64   377  1.475 -37.109  0.944
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R2#

R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#end
R3#set clo
R3#set clo
*Sep 27 22:18:40.863: %SYS-5-CONFIG_I: Configured from console by console
R3#clock  
R3#clock set
R3#clock set ?
  hh:mm:ss  Current Time

R3#clock set 00:00:00 ?
  <1-31>  Day of the month
  MONTH   Month of the year

R3#clock set 00:00:00 1 Sep ?
  <1993-2035>  Year

R3#clock set 00:00:00 1 Sep 2000 ?
  <cr>

R3#clock set 00:00:00 1 Sep 2000 
R3#
*Sep  1 00:00:00.003: %SYS-6-CLOCKUPDATE: System clock has been updated from 22:19:42 UTC Fri Sep 27 2019 to 00:00:00 UTC Fri Sep 1 2000, configured from console by console.
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ntp tim
R3(config)#ntp time
R3(config)#cloc    
R3(config)#clock tim
R3(config)#clock timezone JST 9
R3(config)#
Sep  1 00:00:20.731: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:00:20 UTC Fri Sep 1 2000 to 09:00:20 JST Fri Sep 1 2000, configured from console by console.
R3(config)#end
R3#
Sep  1 00:00:23.303: %SYS-5-CONFIG_I: Configured from console by console
R3#sh clock
09:00:26.091 JST Fri Sep 1 2000
R3#sh clcok detail
        ^
% Invalid input detected at '^' marker.

R3#sh clock detail
09:00:36.383 JST Fri Sep 1 2000
Time source is user configuration
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#upda
R3(config)#ntp up
R3(config)#end                 
R3#
Sep  1 00:00:51.935: %SYS-5-CONFIG_I: Configured from console by console
R3#clo
R3#clock ?
  read-calendar    Read the hardware calendar into the clock
  set              Set the time and date
  update-calendar  Update the hardware calendar from the clock

R3#clock upda
R3#clock update-calendar 
R3#sh cale
R3#sh calendar 
09:01:06 JST Fri Sep 1 2000
R3#sh clock              
09:01:15.695 JST Fri Sep 1 2000
R3#sh clock
09:14:01.295 JST Fri Sep 1 2000
R3#conft
Translating "conft"

Translating "conft"

% Bad IP address or host name
% Unknown command or computer name, or unable to find computer address
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#ipv6 unicast-rou
R3(config)#ipv6 unicast-routing 
R3(config)#do sh ip int b
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            unassigned      YES NVRAM  administratively down down    
FastEthernet0/1            unassigned      YES NVRAM  administratively down down    
Serial0/0/0                unassigned      YES NVRAM  administratively down down    
R3(config)#ipv6
R3(config)#ipv6 en
R3(config)#ipv6 en
                ^
% Invalid input detected at '^' marker.

R3(config)#int f0/0
R3(config-if)#ipv
R3(config-if)#ipv6 en
R3(config-if)#ipv6 enable 
R3(config-if)#do sh ipv6 int bri
FastEthernet0/0            [administratively down/down]
    FE80::221:A0FF:FE09:487C
FastEthernet0/1            [administratively down/down]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R3(config-if)#no shut
R3(config-if)#
Sep  1 00:24:25.615: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R3(config-if)#ipv
R3(config-if)#ipv6 add
R3(config-if)#ipv6 address fe80::2 link
R3(config-if)#ipv6 address fe80::2 link-local 
R3(config-if)#
Sep  1 00:39:28.819: %IPV6_ND-4-DUPLICATE: Duplicate address FE80::2 on FastEthernet0/0
R3(config-if)#ipv6 address fe80::3 link-local 
R3(config-if)#do sh ipv6 add
sh ipv6 add
         ^
% Invalid input detected at '^' marker.

R3(config-if)#do sh ipv6 int b
FastEthernet0/0            [up/up]
    FE80::3
FastEthernet0/1            [administratively down/down]
    unassigned
Serial0/0/0                [administratively down/down]
    unassigned
R3(config-if)#ntp mu
R3(config-if)#do sh clock   
09:43:35.131 JST Fri Sep 1 2000
R3(config-if)#ntp mul
R3(config-if)#ntp multicast cli
R3(config-if)#ntp multicast client 
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.17 msec, peer dispersion is 0.00 msec
loopfilter state is 'NSET' (Never set), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc      

  address         ref clock       st   when   poll reach  delay  offset   disp
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh clock
09:50:11.707 JST Fri Sep 1 2000
R3(config-if)#no ntp multicast client
R3(config-if)#ntp multicast client ff02::1
R3(config-if)#do sh clock
09:53:20.931 JST Fri Sep 1 2000
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh clock
07:52:24.611 JST Sat Sep 28 2019
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
  FE80::1         .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh clock
07:52:32.419 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:52:41.955 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:52:44.459 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:52:48.243 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:53:12.431 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:53:13.143 JST Sat Sep 28 2019
R3(config-if)#do sh clock
07:53:13.839 JST Sat Sep 28 2019
R3(config-if)#
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3      1     64     1  1.497  -9.199 437.53
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -9.7069 msec, root delay is 0.00 msec
root dispersion is 2.05 msec, peer dispersion is 0.04 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3     27     64     1  1.497  -9.706  0.048
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
* FE80::1         10.0.128.254     3      8     64     3  1.497 -15.069  0.515
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.04 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.07 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.21 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.24 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.26 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.28 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.35 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh clock
07:55:12.099 JST Sat Sep 28 2019
R3(config-if)#do sh clock ntp
sh clock ntp
         ^
% Invalid input detected at '^' marker.

R3(config-if)#do sh clock    
07:55:18.051 JST Sat Sep 28 2019
R3(config-if)#do sh clock detail
07:55:21.679 JST Sat Sep 28 2019
Time source is NTP
R3(config-if)#do sh ntp status  
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.66 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.69 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.70 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -15.0697 msec, root delay is 0.00 msec
root dispersion is 3.73 msec, peer dispersion is 0.51 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.77 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.80 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.82 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.85 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.87 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.90 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 3.96 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -20.1837 msec, root delay is 0.00 msec
root dispersion is 4.01 msec, peer dispersion is 0.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status | i is synch
R3(config-if)#do sh ntp status | i is synch
R3(config-if)#do sh ntp status | i is sync 
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is unsync
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
R3(config-if)#do sh ntp status | i is sync  
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh clock
07:56:15.111 JST Sat Sep 28 2019
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -24.9578 msec, root delay is 0.00 msec
root dispersion is 5.41 msec, peer dispersion is 0.85 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -29.5212 msec, root delay is 0.00 msec
root dispersion is 6.17 msec, peer dispersion is 0.89 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -29.5212 msec, root delay is 0.00 msec
root dispersion is 6.22 msec, peer dispersion is 0.89 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status | i is sync
R3(config-if)#do sh ntp status            
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -29.5212 msec, root delay is 0.00 msec
root dispersion is 6.64 msec, peer dispersion is 0.89 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -33.7806 msec, root delay is 0.00 msec
root dispersion is 6.75 msec, peer dispersion is 0.91 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -47.4475 msec, root delay is 0.00 msec
root dispersion is 10.37 msec, peer dispersion is 0.94 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -47.4475 msec, root delay is 0.00 msec
root dispersion is 10.39 msec, peer dispersion is 0.94 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#shut
R3(config-if)#
Sep 27 23:03:04.263: %LINK-5-CHANGED: Interface FastEthernet0/0, changed state to administratively down
Sep 27 23:03:05.263: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to down
R3(config-if)#no shut
R3(config-if)#
Sep 27 23:03:09.507: %LINK-3-UPDOWN: Interface FastEthernet0/0, changed state to up
Sep 27 23:03:10.507: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state to up
R3(config-if)#do sh run | i ntp
 ntp multicast client FF02::1
R3(config-if)#do sh run | i ntp|clock
clock timezone JST 9 0
 ntp multicast client FF02::1
 clock rate 2000000
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.04 msec, peer dispersion is 0.00 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh run
Building configuration...

Current configuration : 1232 bytes
!
! Last configuration change at 09:00:51 JST Fri Sep 1 2000
version 15.1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
clock timezone JST 9 0
dot11 syslog
ip source-route
!
!
          
R3(config-if)#ntp statu 
R3(config-if)#do sh run | i ntp|clock
clock timezone JST 9 0
 ntp multicast client FF02::1
 clock rate 2000000
R3(config-if)#do ping fe80::1%FE0/0
% Unrecognized host or address, or protocol not running.

R3(config-if)#do ping fe80::1%FastEthernet0/0
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to FE80::1, timeout is 2 seconds:
Packet sent with a source address of FE80::3%FastEthernet0/0
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 0/1/8 ms
R3(config-if)#do sh run | i ntp|clock        
clock timezone JST 9 0
 ntp multicast client FF02::1
 clock rate 2000000
R3(config-if)#do sh ntp status               
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -61.4580 msec, root delay is 0.00 msec
root dispersion is 2.35 msec, peer dispersion is 3937.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0000 Hz, precision is 2**24
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is -61.4580 msec, root delay is 0.00 msec
root dispersion is 2.36 msec, peer dispersion is 3937.74 msec
loopfilter state is 'FREQ' (Drift being measured), drift is 0.000000000 s/s
system poll interval is 64, never updated.
R3(config-if)#end
R3#
Sep 27 23:05:43.279: %SYS-5-CONFIG_I: Configured from console by console
R3#debu
R3#debug nt
R3#debug ntp ?
  adjust    NTP clock adjustments
  all       NTP all debugging on
  core      NTP core messages
  events    NTP events
  packet    NTP packet debugging
  refclock  NTP refclock messages

R3#debug ntp eve
R3#debug ntp events 
NTP events debugging is on
R3#u all               
All possible debugging has been turned off
R3#de
R3#debu
R3#debug nt
R3#debug ntp a
R3#debug ntp a
% Ambiguous command:  "debug ntp a"
R3#debug ntp all
R3#debug ntp all 
NTP events debugging is on
NTP core messages debugging is on
NTP clock adjustments debugging is on
NTP reference clocks debugging is on
NTP packets debugging is on
R3#conf t           
Sep 27 23:06:22.671: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:06:22.671: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:06:22.671: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:06:22.671: NTP Core(DEBUG): receive: packet given to process_packet
Sep 27 23:06:22.675: NTP Core(NOTICE): Clock is synchronized.
R3#do sh ntp status 
       ^
% Invalid input detected at '^' marker.

R3#sh ntp status
Clock is synchronized, stratum 4, reference is 137.229.48.31 
nominal freq is 250.0000 Hz, actual freq is 250.0187 Hz, precision is 2**24
reference time is E139146E.ACABEB25 (08:06:22.674 JST Sat Sep 28 2019)
clock offset is -67.3662 msec, root delay is 54.35 msec
root dispersion is 2101.27 msec, peer dispersion is 1937.99 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000074851 s/s
system poll interval is 64, last update was 19 sec ago.
R3#sh ntp status | i ntp
R3#sh ntp status | i is sync
Clock is synchronized, stratum 4, reference is 137.229.48.31 
R3#sh clock
08:07:17.403 JST Sat Sep 28 2019
R3#sh clock
08:07:20.371 JST Sat Sep 28 2019
R3#
Sep 27 23:07:26.662: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:07:26.662: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:07:26.662: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:07:26.662: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:08:32.653: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:08:32.653: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:08:32.653: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:08:32.653: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:09:38.644: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:09:38.644: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:09:38.644: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:09:38.644: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:10:42.636: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:10:42.636: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:10:42.636: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:10:42.636: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:11:47.628: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:11:47.628: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:11:47.628: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:11:47.628: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:12:52.622: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:12:52.622: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:12:52.622: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:12:52.622: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:13:55.615: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:13:55.615: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:13:55.615: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:13:55.615: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:15:00.609: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:15:00.609: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:15:00.609: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:15:00.609: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:16:06.603: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:16:06.603: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:16:06.603: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:16:06.603: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:17:09.596: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:17:09.596: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:17:09.596: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:17:09.596: NTP Core(DEBUG): receive: packet given to process_packet
R3#
Sep 27 23:18:12.591: NTP message received from FE80::1 on interface 'FastEthernet0/0', (FF02::1), table 301989890.
Sep 27 23:18:12.591: NTP Core(DEBUG): ntp_receive: message received
Sep 27 23:18:12.591: NTP Core(DEBUG): ntp_receive: peer is 0x65B00948, next action is 1.
Sep 27 23:18:12.591: NTP Core(DEBUG): receive: packet given to process_packet
R3#

Authentication

SW1

configure terminal
!
vtp mode transparent
!
vlan 128
exit
vlan 129
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.1 255.255.255.0
exit
!
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 129
exit
interface range FastEthernet 1/0/4 - 6
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129
exit
interface FastEthernet 1/0/23
 spanning-tree portfast
 switchport mode access
 switchport access vlan 128
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

SW2

configure terminal
!
vtp mode transparent
!
vlan 129
exit
!
ip routing
!
interface Vlan 129
 ip address 10.0.129.2 255.255.255.0
exit
!
interface FastEthernet 1/0/1
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129
exit
!
end

SW1

configure terminal
!
ntp server 10.0.128.254
!ntp server 10.0.128.254 key 1
!
ntp authenticate
ntp authentication-key 1 md5 pg1x
ntp trusted-key 1
!
end

SW2

configure terminal
!
ntp authenticate
ntp authentication-key 1 md5 pg1x
ntp trusted-key 1
ntp server 10.0.129.1 key 1
!
end

SW4

monitor session 1 source interface Fa1/0/4
monitor session 1 destination interface Fa1/0/12 encapsulation replicate

/etc/chrony/chrony.conf

keyfile /etc/chrony/chrony.keys

/etc/chrony/chrony.keys

1 MD5 ASCII:pg1x

column 1 means ID, ID may be must same.

And config changed, you must restart chronyd.

sudo systemctl restart chronyd
sudo systemctl status chronyd

sometimes works fine, i reset ntp configuration and input over.

no ntp

clock timezone JST 9
clock set 00:00:00 3 Jan 2010

root@kozue:~# chronyc clients
Hostname                      NTP   Drop Int IntL Last     Cmd   Drop Int  Last
===============================================================================
10.0.128.1                      3      0   6   -    26       0      0   -     -

SW1 Console Log

SW1#
SW1#
*Mar  1 06:37:20.934: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan129, changed state to up
SW1#
*Mar  1 06:37:22.914: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to up
*Mar  1 06:37:23.032: %LINK-3-UPDOWN: Interface FastEthernet1/0/23, changed state to up
*Mar  1 06:37:23.921: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to up
SW1#
*Mar  1 06:37:24.038: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/23, changed state to up
SW1#
*Mar  1 06:37:33.677: %LINK-3-UPDOWN: Interface FastEthernet1/0/2, changed state to up
*Mar  1 06:37:34.683: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/2, changed state to up
SW1#
*Mar  1 06:37:38.114: %LINK-3-UPDOWN: Interface FastEthernet1/0/3, changed state to up
*Mar  1 06:37:39.121: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/3, changed state to up
SW1#do sh clock
       ^
% Invalid input detected at '^' marker.

SW1#sh clock
*07:02:49.632 UTC Mon Mar 1 1993
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#ntp serve
SW1(config)#ntp server 10.0.128.254
SW1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 1/1/1 ms
SW1(config)#ipv
SW1(config)#ipv
SW1(config)#ipv?
% Unrecognized command
SW1(config)#   
Sep 28 05:07:54.327: %LINK-3-UPDOWN: Interface FastEthernet1/0/4, changed state to up
SW1(config)#
Sep 28 05:07:56.340: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/4, changed state to up
SW1(config)#interface range FastEthernet 1/0/4 - 6
SW1(config-if-range)# switchport trunk encapsulation dot1q
SW1(config-if-range)# switchport mode trunk
SW1(config-if-range)# switchport trunk allowed vlan 129
SW1(config-if-range)#exit
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i monitor session
monitor session 1 source interface Fa1/0/1
monitor session 1 destination interface Fa1/0/12 encapsulation replicate
SW1(config)#no monitor session 1 source interface Fa1/0/1
SW1(config)#monitor session 1 source interface Fa1/0/1   
SW1(config)#monitor session 1 source interface Fa1/0/4
SW1(config)#do sh run | i monitor session                
monitor session 1 source interface Fa1/0/1 , Fa1/0/4
monitor session 1 destination interface Fa1/0/12 encapsulation replicate
SW1(config)#no monitor session 1 source interface Fa1/0/1
SW1(config)#do sh run | i monitor session                
monitor session 1 source interface Fa1/0/4
monitor session 1 destination interface Fa1/0/12 encapsulation replicate
SW1(config)#                             
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp auth
SW1(config)#ntp auth       
SW1(config)#ntp authenticate
SW1(config)#ntp authenticate 
SW1(config)#ntp auth
SW1(config)#ntp authenticati
SW1(config)#ntp authentication-key 1 md
SW1(config)#ntp authentication-key 1 md5 pg1x
SW1(config)#ntp tru
SW1(config)#ntp trusted-key 1
SW1(config)#do sh clock
.05:14:35.521 UTC Sat Sep 28 2019
SW1(config)#do sh clock detail
.05:14:38.700 UTC Sat Sep 28 2019
Time source is NTP
SW1(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396AC1.F31BC973 (05:14:41.949 UTC Sat Sep 28 2019)
clock offset is 3.5262 msec, root delay is 54.97 msec
root dispersion is 3942.10 msec, peer dispersion is 1937.52 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000021 s/s
system poll interval is 64, last update was 3 sec ago.
SW1(config)#do sh ntp assoc 

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    10.84.87.146     2      1     64     1  1.266   3.572 62.606
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#
Sep 28 05:16:24.498: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/1, changed state to down
Sep 28 05:16:24.506: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/23, changed state to down
Sep 28 05:16:25.504: %LINK-3-UPDOWN: Interface FastEthernet1/0/1, changed state to down
SW1(config)#
Sep 28 05:16:25.513: %LINK-3-UPDOWN: Interface FastEthernet1/0/23, changed state to down
SW1(config)#
Sep 28 05:16:26.058: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/2, changed state to down
Sep 28 05:16:27.064: %LINK-3-UPDOWN: Interface FastEthernet1/0/2, changed state to down
SW1(config)#
Sep 28 05:16:27.778: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet1/0/3, changed state to down
Sep 28 05:16:28.784: %LINK-3-UPDOWN: Interface FastEthernet1/0/3, changed state to down
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    10.84.87.146     2     62     64     3  1.266   3.572  0.814
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396B7E.F44DF14E (05:17:50.954 UTC Sat Sep 28 2019)
clock offset is 3.5812 msec, root delay is 54.22 msec
root dispersion is 9.35 msec, peer dispersion is 3.70 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000024 s/s
system poll interval is 64, last update was 132 sec ago.
SW1(config)#debu
SW1(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396CBF.F40206D0 (05:23:11.953 UTC Sat Sep 28 2019)
clock offset is 5.0289 msec, root delay is 54.73 msec
root dispersion is 8.54 msec, peer dispersion is 1.92 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000043 s/s
system poll interval is 64, last update was 1 sec ago.
SW1(config)#do debug ntp all
NTP events debugging is on
NTP core messages debugging is on
NTP clock adjustments debugging is on
NTP reference clocks debugging is on
NTP packets debugging is on
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
Sep 28 05:24:49.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:24:49.074: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:24:49.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:24:49.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:24:49.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:25:21.966: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:25:21.966: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:25:21.966: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:25:21.966: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:25:21.966: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#ntp auth
SW1(config)#ntp authenticatke
SW1(config)#ntp authenticatio
SW1(config)#ntp authentication-key 
Sep 28 05:25:44.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:25:44.070: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:25:44.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:25:44.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:25:44.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#                       
Sep 28 05:26:25.946: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:26:25.946: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:26:25.946: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:26:25.946: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:26:25.946: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 05:26:38.068: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:26:38.068: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:26:38.068: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:26:38.068: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:26:38.068: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:27:01.069: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:27:01.069: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:27:01.069: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:27:01.069: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:27:01.069: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:27:30.950: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:27:30.950: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:27:30.950: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:27:30.950: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:27:30.950: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
Sep 28 05:27:53.071: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:27:53.071: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:27:53.071: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:27:53.071: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:27:53.071: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
Sep 28 05:28:33.949: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:28:33.949: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:28:33.949: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:28:33.949: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:28:33.949: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
05:28:44.090 UTC Sat Sep 28 2019
SW1(config)#
Sep 28 05:28:59.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:28:59.073: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:28:59.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:28:59.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:28:59.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:03.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:03.074: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:03.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:03.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:03.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:04.072: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 05:29:04.072: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:04.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:04.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:04.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:05.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:05.070: NTP Core(DEBUG): ntp_receive: message receive
SW1(config)#d
Sep 28 05:29:05.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:05.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:05.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:06.069: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:06.069: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:06.069: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:06.069: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:06.069: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:07.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:07.075: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:07.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:07.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:07.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:08.074: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 05:29:08.074: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:08.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:08.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:08.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:09.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:09.072: NTP Core(DEBUG): ntp_receive: message receive
SW1(config)#d
Sep 28 05:29:09.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:09.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:09.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:10.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:10.070: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:10.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:10.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:10.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:11.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:29:11.077: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:11.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:29:11.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:29:11.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 05:29:36.947: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:29:36.947: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:29:36.947: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:36.947: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:36.947: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 05:30:06.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:30:06.073: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:30:06.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:30:06.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:30:06.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i ntp

Sep 28 05:30:40.953: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:30:40.953: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:30:40.953: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:30:40.953: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:30:40.953: NTP Core(DEBUG): receive: packet given to process_packetntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp ser
SW1(config)#ntp server 10.0.128.254 ?
  burst    Send a burst when peer is reachable (Default)
  iburst   Send a burst when peer is unreachable (Default)
  key      Configure peer authentication key
  maxpoll  Maximum poll interval
  minpoll  Minimum poll interval
  prefer   Prefer this peer when possible
  source   Interface for source address
  version  Configure NTP version
  <cr>

SW1(config)#ntp server 10.0.128.254 
Sep 28 05:31:09.071: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:31:09.071: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:31:09.071: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:31:09.071: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:31:09.071: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#no monitor session 1 source interface Fa1/0/4
SW1(config)#no monitor session 1 source interface Fa1/0/23
Sep 28 05:31:46.954: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 05:31:46.954: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 05:31:46.954: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:31:46.954: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:31:46.954: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#monitor session 1 source interface Fa1/0/24   
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
Sep 28 05:32:14.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 05:32:14.075: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:32:14.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 05:32:14.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 05:32:14.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#ntp ser
SW1(config)#ntp server 10.0.128.254 key
SW1(config)#ntp server 10.0.128.254 key 1
SW1(config)#
Sep 28 05:32:43.326: NTP Core(NOTICE): Clock synchronization lost.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do ping 10.0.128.254
.Sep 28 05:33:02.947: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#do ping 10.0.128.254
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.128.254, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/4/9 ms
SW1(config)#
.Sep 28 05:33:04.952: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:06.948: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:08.953: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:10.950: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:12.955: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:14.951: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:33:16.948: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Sep 28 05:33:17.082: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:33:17.082: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:33:17.082: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:33:17.082: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:33:17.082: NTP message sent to 10.0.129.2, from interface 'Vla
SW1(config)#n129' (10.0.129.1).
SW1(config)#
.Sep 28 05:33:18.953: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#
.Sep 28 05:34:08.949: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:34:20.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:20.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:20.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:20.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:20.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:22.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:22.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:22.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:22.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:22.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:24.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:24.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:24.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:24.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:24.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:26.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:26.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:26.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:26.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:26.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:28.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:28.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:28.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:28.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:28.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:30.071: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:30.071: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:30.071: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:30.071: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:30.071: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:32.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:32.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:32.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:32.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:32.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:34.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:34.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:34.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:34.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:34.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:34:36.078: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:34:36.078: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:34:36.078: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:34:36.078: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:34:36.078: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:12.954: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:35:25.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:25.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:25.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:25.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:25.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:27.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:27.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:27.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:27.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:27.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:29.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:29.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:29.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:29.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:29.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:31.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:31.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:31.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:31.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:31.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:33.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:33.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:33.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:33.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:33.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:35.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:35.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:35.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:35.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:35.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:37.071: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:37.071: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:37.071: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:37.071: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:37.071: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:39.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:39.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:39.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:39.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:39.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:35:41.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:35:41.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:35:41.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:35:41.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:35:41.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:15.953: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:36:31.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:31.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:31.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:31.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:31.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:33.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:33.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:33.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:33.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:33.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:35.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:35.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:35.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:35.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:35.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:37.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:37.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:37.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:37.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:37.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:39.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:39.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:39.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:39.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:39.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:41.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:41.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:41.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:41.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:41.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:43.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:43.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:43.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:43.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:43.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:45.078: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:45.078: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:45.078: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:45.078: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:45.078: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:36:47.091: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:36:47.091: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:36:47.091: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:36:47.091: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:36:47.091: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:21.955: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:37:35.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:35.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:35.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:35.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:35.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:37.071: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:37.071: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:37.071: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:37.071: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:37.071: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:39.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:39.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:39.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:39.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:39.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:41.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:41.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:41.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:41.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:41.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:43.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:43.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:43.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:43.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:43.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:45.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:45.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:45.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:45.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:45.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:47.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:47.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:47.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:47.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:47.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:49.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:49.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:49.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:49.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:49.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:37:51.097: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:37:51.097: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:37:51.097: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:37:51.097: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:37:51.097: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:24.953: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:38:41.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:41.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:41.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:41.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:41.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:43.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:43.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:43.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:43.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:43.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:45.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:45.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:45.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:45.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:45.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:47.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:47.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:47.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:47.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:47.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:49.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:49.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:49.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:49.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:49.070: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:51.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:51.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:51.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:51.075: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:51.075: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:53.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:53.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:53.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:53.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:53.080: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:55.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:55.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:55.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:55.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:55.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:38:57.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:38:57.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:38:57.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:38:57.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:38:57.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:29.948: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Sep 28 05:39:48.076: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:48.076: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:48.076: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:48.076: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:48.076: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:50.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:50.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:50.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:50.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:50.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:52.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:52.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:52.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:52.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:52.086: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:54.074: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:54.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:54.074: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:54.074: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:54.074: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:56.070: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:56.070: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:56.070: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:56.070: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:56.079: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:39:58.075: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:39:58.075: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:39:58.075: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:39:58.084: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:39:58.084: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:40:00.072: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:40:00.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:40:00.072: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:40:00.072: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:40:00.072: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:40:02.077: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:40:02.077: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:40:02.077: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:40:02.077: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:40:02.077: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 05:40:04.073: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 05:40:04.073: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:40:04.073: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 05:40:04.073: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 05:40:04.073: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.05:40:31.881 UTC Sat Sep 28 2019
SW1(config)#do sh ntp ass
.Sep 28 05:40:34.952: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (05:24:16.947 UTC Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 7.18 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was 986 sec ago.
SW1(config)#do clock set 00:00:00 1 Feb 2013
SW1(config)#
.Feb  1 00:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 05:41:17 UTC Sat Sep 28 2019 to 00:00:00 UTC Fri Feb 1 2013, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:00:07.985 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:00:09.244 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:00:09.990 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:00:10.427 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:00:10.829 UTC Fri Feb 1 2013
SW1(config)#
.Feb  1 00:00:42.857: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:42.857: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:42.857: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:42.857: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:42.857: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:44.862: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:44.862: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:44.862: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:44.862: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:44.870: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:46.867: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:46.867: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:46.867: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:46.867: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:46.867: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:48.863: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:48.863: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:48.863: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:48.863: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:48.872: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:50.868: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:50.868: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:50.868: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:50.868: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:50.868: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:52.865: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:52.865: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:52.865: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:52.865: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:52.873: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:54.869: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:54.869: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:54.869: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:54.869: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:54.869: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:56.858: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:56.858: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:56.858: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:56.858: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:56.866: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:00:58.862: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:00:58.862: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:00:58.862: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:00:58.871: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:00:58.871: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:01:47.860: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:01:47.860: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:01:47.860: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:01:47.860: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:01:47.869: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:02:50.867: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:02:50.867: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:02:50.867: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:02:50.867: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:02:50.867: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:03:53.866: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:03:53.866: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:03:53.866: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:03:53.866: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:03:53.866: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:04:57.871: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:04:57.871: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:04:57.871: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:04:57.871: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:04:57.871: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:06:01.868: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:06:01.868: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:06:01.868: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:06:01.868: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:06:01.868: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:07:05.873: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:07:05.873: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:07:05.873: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:07:05.873: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:07:05.873: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:08:11.866: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:08:11.866: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:08:11.866: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:08:11.866: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:08:11.866: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:09:14.873: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:09:14.873: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:09:14.873: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:09:14.873: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:09:14.873: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock                     
.00:10:01.539 UTC Fri Feb 1 2013
SW1(config)#
.Feb  1 00:10:19.868: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:10:19.868: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:10:19.868: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:10:19.868: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:10:19.868: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:11:25.870: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:11:25.870: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:11:25.870: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:11:25.870: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:11:25.870: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:12:28.868: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:12:28.868: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:12:28.868: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:12:28.868: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:12:28.868: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:13:04.537 UTC Fri Feb 1 2013
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh clock    
.00:13:13.949 UTC Fri Feb 1 2013
SW1(config)#
.Feb  1 00:13:34.870: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:13:34.870: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:13:34.870: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:13:34.870: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:13:34.870: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Feb  1 00:14:38.867: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:14:38.867: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:14:38.867: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:14:38.867: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:14:38.867: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Feb  1 00:15:42.872: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:15:42.872: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:15:42.872: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:15:42.872: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:15:42.872: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#no ntp server 10.0.128.254 key 1
SW1(config)#ntp server 10.0.128.254 key 1   
SW1(config)#
.Feb  1 00:16:47.867: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:16:47.867: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:16:47.867: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:16:47.867: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:16:47.867: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Feb  1 00:16:55.744: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:16:57.740: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:16:59.737: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:01.742: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:03.738: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:05.743: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:07.740: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:09.736: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:11.741: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Feb  1 00:17:50.874: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:17:50.874: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:17:50.874: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:17:50.874: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:17:50.874: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Feb  1 00:18:00.739: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp server 10.0.128.254         
SW1(config)#
.Feb  1 00:18:53.872: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:18:53.872: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:18:53.872: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:18:53.872: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:18:53.872: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (05:24:16.947 UTC Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 25.12 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209970295 sec ago.
SW1(config)#do sh ntp clock
                      ^
% Invalid input detected at '^' marker.

SW1(config)#do sh ntp clock
.Feb  1 00:19:27.737: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:27.737: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:27.737: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:27.737: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:27.737: NTP Core(DEBUG): receive: packet given to process_packet
.Feb  1 00:19:27.737: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#o 6.           

.Feb  1 00:19:27.737: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
SW1(config)#
.Feb  1 00:19:29.742: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:29.742: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:29.742: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:29.742: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:29.742: NTP Core(DEBUG): receive: packet given to process_packet
.Feb  1 00:19:29.742: NTP Core(INFO): synchronized to 10.0.128.254, strat
SW1(config)#
SW1(config)#
SW1(config)#um 3
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Feb  1 00:19:31.739: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:31.739: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:31.739: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:31.739: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:31.739: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Feb  1 00:19:33.743: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:33.743: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:33.743: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:33.743: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:33.743: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Feb  1 00:19:35.740: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:35.740: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:35.740: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:35.740: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:35.740: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Feb  1 00:19:37.736: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:37.736: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:37.736: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:37.736: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:37.736: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Feb  1 00:19:39.741: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:39.741: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:39.741: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:39.741: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:39.741: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh ntp clock
.Feb  1 00:19:41.738: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:41.738: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:41.738: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:41.738: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:41.738: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh ntp clock
                      ^
% Invalid input detected at '^' marker.

SW1(config)#do sh ntp clock
                      ^
% Invalid input detected at '^' marker.

SW1(config)#
.Feb  1 00:19:43.743: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:43.743: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:19:43.743: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:43.743: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:19:43.743: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock    
.00:19:51.024 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:52.047 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:52.534 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:52.962 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:53.373 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:53.742 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:54.111 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:54.497 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:54.874 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:55.252 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:55.629 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:55.931 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:56.242 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:56.485 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:56.762 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:57.886 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:58.414 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:58.960 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:59.413 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:19:59.840 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:00.193 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:00.428 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:00.629 UTC Fri Feb 1 2013
SW1(config)#
SW1(config)#do sh ntp clock
                      ^
% Invalid input detected at '^' marker.

SW1(config)#
.Feb  1 00:19:59.874: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:19:59.874: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:19:59.874: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:19:59.874: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:19:59.882: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh ntp clock
                      ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock    
.00:20:06.073 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:06.929 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:07.852 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:08.732 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:09.705 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:10.796 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:11.542 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:12.507 UTC Fri Feb 1 2013
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:20:14.059 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:14.680 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:15.074 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:15.468 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:16.114 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:19.998 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:20.929 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:22.649 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:23.857 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:25.468 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:27.338 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:29.117 UTC Fri Feb 1 2013
SW1(config)#do sh      
.Feb  1 00:20:33.739: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:20:33.739: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:20:33.739: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:20:33.739: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:20:33.739: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (05:24:16.947 UTC Sat Sep 28 2019)
clock offset is -480920286.0000 msec, root delay is 0.00 msec
root dispersion is 26.32 msec, peer dispersion is 0.60 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209970216 sec ago.
SW1(config)#do sh clock     
.00:20:44.308 UTC Fri Feb 1 2013
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    10.84.87.146     2     17     64     3  1.534 -480920  0.600
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh clock    
.00:20:53.813 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:55.700 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:56.405 UTC Fri Feb 1 2013
SW1(config)#do sh clock
.00:20:57.294 UTC Fri Feb 1 2013
SW1(config)#clo        
SW1(config)#clock tim
SW1(config)#clock timezone JST 9
SW1(config)#
.Feb  1 00:21:03.871: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:21:03.871: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:21:03.871: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:21:03.871: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:21:03.879: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#clock timezone JST 9
.Feb  1 00:21:05.121: %SYS-6-CLOCKUPDATE: System clock has been updated from 00:21:05 UTC Fri Feb 1 2013 to 09:21:05 JST Fri Feb 1 2013, configured from console by console.
SW1(config)#do sh clock         
.09:21:08.501 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:09.869 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:10.900 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:11.454 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:11.915 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:12.981 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:13.669 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:14.256 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:14.608 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:21:15.288 JST Fri Feb 1 2013
SW1(config)#
.Feb  1 00:21:36.737: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:21:36.737: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:21:36.737: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:21:36.737: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:21:36.737: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.09:22:03.791 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:05.108 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:05.997 JST Fri Feb 1 2013
SW1(config)#
.Feb  1 00:22:08.874: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:22:08.882: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:22:08.882: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:22:08.882: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:22:08.882: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.09:22:15.879 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:16.835 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:17.363 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:17.858 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:18.311 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:18.789 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:19.259 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:19.712 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:20.115 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:20.509 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:20.861 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:21.222 JST Fri Feb 1 2013
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#
.Feb  1 00:22:39.744: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:22:39.744: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:22:39.744: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:22:39.744: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:22:39.744: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 105E0E481D 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254
SW1(config)#do sh clock      
.09:22:57.335 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:59.298 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:22:59.902 JST Fri Feb 1 2013
SW1(config)#do sh clock
.Feb  1 00:23:13.869: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:23:13.869: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:23:13.869: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:23:13.869: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:23:13.869: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock      
.09:23:39.337 JST Fri Feb 1 2013
SW1(config)#do sh clock detai
.09:23:44.697 JST Fri Feb 1 2013
Time source is NTP
SW1(config)#
.Feb  1 00:23:44.739: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:23:44.739: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:23:44.739: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:23:44.739: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:23:44.739: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.15 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209970026 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.29 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209970017 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.36 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209970013 sec ago.
SW1(config)#do sh clock      
.09:24:07.397 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:08.303 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:08.923 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:09.813 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:10.601 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:11.448 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:12.086 JST Fri Feb 1 2013
SW1(config)#do sh clock detai
.Feb  1 00:24:18.881: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:24:18.881: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:24:18.881: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:24:18.881: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:24:18.881: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh ntp status 
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.71 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209969989 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.85 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209969980 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.88 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209969978 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 29.91 msec, peer dispersion is 2.25 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209969976 sec ago.
SW1(config)#do sh clock     
.09:24:47.058 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:48.149 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:48.954 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:49.692 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:50.288 JST Fri Feb 1 2013
SW1(config)#do sh clock
.Feb  1 00:24:49.742: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Feb  1 00:24:49.742: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Feb  1 00:24:49.742: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:24:49.742: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Feb  1 00:24:49.742: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.09:24:51.085 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:52.553 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:53.383 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:53.937 JST Fri Feb 1 2013
SW1(config)#do sh clock
.09:24:54.407 JST Fri Feb 1 2013
SW1(config)#
SW1(config)#do sh clock
.09:24:55.916 JST Fri Feb 1 2013
SW1(config)#end
SW1# hs
.Feb  1 00:25:15.756: %SYS-5-CONFIG_I: Configured from console by console
SW1#sh ntp
SW1#sh ntp ?
  associations  NTP associations
  status        NTP status

SW1#sh ntp sta
SW1#sh ntp status 
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396D00.F2A57007 (14:24:16.947 JST Sat Sep 28 2019)
clock offset is -480920276.0000 msec, root delay is 0.00 msec
root dispersion is 30.53 msec, peer dispersion is 2.89 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000065 s/s
system poll interval is 64, last update was -209969934 sec ago.
SW1#
.Feb  1 00:25:21.879: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Feb  1 00:25:21.879: NTP Core(DEBUG): ntp_receive: message received
.Feb  1 00:25:21.879: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Feb  1 00:25:21.879: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Feb  1 00:25:21.879: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1#
SW1#
SW1#
SW1#
SW1#
SW1#sh clock
.09:25:29.010 JST Fri Feb 1 2013
SW1#u all
All possible debugging has been turned off
SW1#sh clock
.09:25:37.876 JST Fri Feb 1 2013
SW1#sh clock
.09:25:40.603 JST Fri Feb 1 2013
SW1#sh clock
.09:25:41.500 JST Fri Feb 1 2013
SW1#sh clock
.09:26:31.563 JST Fri Feb 1 2013
SW1#sh clock
.09:26:32.620 JST Fri Feb 1 2013
SW1#sh clock
.09:26:33.149 JST Fri Feb 1 2013
SW1#sh clock
.09:26:33.552 JST Fri Feb 1 2013
SW1#sh clock
.09:26:33.963 JST Fri Feb 1 2013
SW1#sh clock
.09:26:34.332 JST Fri Feb 1 2013
SW1#sh clock
.09:26:34.726 JST Fri Feb 1 2013
SW1#sh clock
.09:26:35.087 JST Fri Feb 1 2013
SW1#sh clock
.09:26:35.414 JST Fri Feb 1 2013
SW1#sh clock
.09:26:35.741 JST Fri Feb 1 2013
SW1#sh clock
.09:26:36.035 JST Fri Feb 1 2013
SW1#sh clock
.09:26:36.303 JST Fri Feb 1 2013
SW1#sh clock
.09:26:36.622 JST Fri Feb 1 2013
SW1#sh clock
.09:26:36.790 JST Fri Feb 1 2013
SW1#sh clock
.09:26:37.033 JST Fri Feb 1 2013
SW1#conf t        
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#ntp server 10.0.128.254
SW1(config)#no ntp server 10.0.128.254
SW1(config)#ntp server 10.0.128.254   
SW1(config)#ntp server 10.0.128.254
SW1(config)#ntp server 10.0.128.254
SW1(config)#ntp server 10.0.128.254
SW1(config)#ntp server 10.0.128.254
SW1(config)#end                       
SW1#  
.Feb  1 00:27:20.092: %SYS-5-CONFIG_I: Configured from console by consoles
SW1#sh clock
.09:27:23.791 JST Fri Feb 1 2013
SW1#clo
SW1#clock set
SW1#clock set ?
  hh:mm:ss  Current Time

SW1#sh clock             
.09:28:09.266 JST Fri Feb 1 2013
SW1#clock set 14:00:00 27 Sep 2019
SW1#
.Sep 27 05:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 09:28:35 JST Fri Feb 1 2013 to 14:00:00 JST Fri Sep 27 2019, configured from console by console.
SW1#sh clock
.14:00:04.445 JST Fri Sep 27 2019
SW1#sh clock
.14:00:06.115 JST Fri Sep 27 2019
SW1#sh clock
.14:00:06.685 JST Fri Sep 27 2019
SW1#sh clock
.14:00:07.197 JST Fri Sep 27 2019
SW1#sh clock
.14:00:07.692 JST Fri Sep 27 2019
SW1#sh clock
.14:00:08.447 JST Fri Sep 27 2019
SW1#sh clock
.14:00:09.101 JST Fri Sep 27 2019
SW1#sh clock
.14:00:23.949 JST Fri Sep 27 2019
SW1#sh clock
.14:00:27.002 JST Fri Sep 27 2019
SW1#sh clock
.14:00:28.521 JST Fri Sep 27 2019
SW1#sh clock
.14:00:29.343 JST Fri Sep 27 2019
SW1#sh clock
.14:00:30.098 JST Fri Sep 27 2019
SW1#sh clock
.14:00:30.811 JST Fri Sep 27 2019
SW1#sh clock
.14:00:31.457 JST Fri Sep 27 2019
SW1#sh clock
.14:00:32.094 JST Fri Sep 27 2019
SW1#sh clock
.14:00:32.698 JST Fri Sep 27 2019
SW1#sh clock
.14:00:33.361 JST Fri Sep 27 2019
SW1#sh clock
.14:00:33.915 JST Fri Sep 27 2019
SW1#sh clock
.14:00:34.493 JST Fri Sep 27 2019
SW1#sh clock
.14:00:35.106 JST Fri Sep 27 2019
SW1#sh clock
.14:00:35.701 JST Fri Sep 27 2019
SW1#sh clock
.14:00:36.272 JST Fri Sep 27 2019
SW1#sh clock
.14:00:36.859 JST Fri Sep 27 2019
SW1#sh clock
.14:00:37.438 JST Fri Sep 27 2019
SW1#sh clock
.14:00:38.033 JST Fri Sep 27 2019
SW1#sh clock
.14:00:38.629 JST Fri Sep 27 2019
SW1#sh clock
.14:00:39.216 JST Fri Sep 27 2019
SW1#sh clock
.14:00:39.871 JST Fri Sep 27 2019
SW1#sh clock
.14:00:40.475 JST Fri Sep 27 2019
SW1#sh clock
.14:00:41.053 JST Fri Sep 27 2019
SW1#sh clock
.14:00:41.699 JST Fri Sep 27 2019
SW1#sh clock
.14:00:42.286 JST Fri Sep 27 2019
SW1#sh clock
.14:00:42.882 JST Fri Sep 27 2019
SW1#sh clock
.14:00:43.461 JST Fri Sep 27 2019
SW1#sh clock
.14:00:44.065 JST Fri Sep 27 2019
SW1#sh clock
.14:00:44.660 JST Fri Sep 27 2019
SW1#sh clock
.14:00:45.256 JST Fri Sep 27 2019
SW1#sh clock
.14:00:45.852 JST Fri Sep 27 2019
SW1#sh clock
.14:00:46.414 JST Fri Sep 27 2019
SW1#sh clock
.14:00:47.034 JST Fri Sep 27 2019
SW1#sh clock
.14:00:47.747 JST Fri Sep 27 2019
SW1#sh clock
.14:00:48.595 JST Fri Sep 27 2019
SW1#sh clock
.14:00:49.408 JST Fri Sep 27 2019
SW1#sh clock
.14:00:50.272 JST Fri Sep 27 2019
SW1#sh clock
.14:00:51.011 JST Fri Sep 27 2019
SW1#sh clock
.14:00:51.766 JST Fri Sep 27 2019
SW1#sh clock
.14:00:52.512 JST Fri Sep 27 2019
SW1#sh clock
.14:00:53.292 JST Fri Sep 27 2019
SW1#sh clock
.14:00:57.889 JST Fri Sep 27 2019
SW1#sh clock
.14:01:02.386 JST Fri Sep 27 2019
SW1#sh clock
.14:01:20.706 JST Fri Sep 27 2019
SW1#sh clock
.14:01:21.461 JST Fri Sep 27 2019
SW1#sh clock
.14:01:22.342 JST Fri Sep 27 2019
SW1#sh clock
.14:01:22.812 JST Fri Sep 27 2019
SW1#sh clock
.14:01:23.189 JST Fri Sep 27 2019
SW1#sh clock
.14:01:23.550 JST Fri Sep 27 2019
SW1#sh clock
.14:01:23.928 JST Fri Sep 27 2019
SW1#sh clock
.14:01:24.288 JST Fri Sep 27 2019
SW1#sh clock
.14:01:24.641 JST Fri Sep 27 2019
SW1#sh clock
.14:01:25.010 JST Fri Sep 27 2019
SW1#sh clock
.14:01:25.303 JST Fri Sep 27 2019
SW1#sh clock
.14:01:25.622 JST Fri Sep 27 2019
SW1#sh clock
.14:01:25.907 JST Fri Sep 27 2019
SW1#sh clock
.14:01:26.125 JST Fri Sep 27 2019
SW1#sh clock
.14:01:26.327 JST Fri Sep 27 2019
SW1#sh clock
.14:01:26.520 JST Fri Sep 27 2019
SW1#
SW1#sh clock
.14:01:28.172 JST Fri Sep 27 2019
SW1#sh clock
.14:01:28.533 JST Fri Sep 27 2019
SW1#sh clock
.14:01:29.263 JST Fri Sep 27 2019
SW1#sh clock
.14:01:29.691 JST Fri Sep 27 2019
SW1#sh clock
.14:01:30.018 JST Fri Sep 27 2019
SW1#sh clock
.14:01:30.336 JST Fri Sep 27 2019
SW1#sh clock
.14:01:30.638 JST Fri Sep 27 2019
SW1#sh clock
.14:01:30.890 JST Fri Sep 27 2019
SW1#sh clock
.14:01:31.125 JST Fri Sep 27 2019
SW1#sh clock
.14:01:31.377 JST Fri Sep 27 2019
SW1#sh clock
.14:01:31.586 JST Fri Sep 27 2019
SW1#sh clock
.14:01:31.763 JST Fri Sep 27 2019
SW1#sh clock
.14:01:31.964 JST Fri Sep 27 2019
SW1#sh clock
.14:01:32.710 JST Fri Sep 27 2019
SW1#sh clock
.14:01:33.147 JST Fri Sep 27 2019
SW1#sh clock
.14:01:33.507 JST Fri Sep 27 2019
SW1#sh clock
.14:01:33.826 JST Fri Sep 27 2019
SW1#sh clock
.14:01:34.111 JST Fri Sep 27 2019
SW1#sh clock
.14:01:34.371 JST Fri Sep 27 2019
SW1#sh clock
.14:01:34.640 JST Fri Sep 27 2019
SW1#sh clock
.14:01:34.891 JST Fri Sep 27 2019
SW1#sh clock
.14:01:35.152 JST Fri Sep 27 2019
SW1#sh clock
.14:01:35.378 JST Fri Sep 27 2019
SW1#sh clock
.14:01:35.655 JST Fri Sep 27 2019
SW1#sh clock
.14:01:35.906 JST Fri Sep 27 2019
SW1#sh clock
.14:01:58.891 JST Fri Sep 27 2019
SW1#sh clock
.14:01:59.780 JST Fri Sep 27 2019
SW1#sh clock
.14:02:00.384 JST Fri Sep 27 2019
SW1#sh clock
.14:02:00.905 JST Fri Sep 27 2019
SW1#sh clock
.14:02:01.366 JST Fri Sep 27 2019
SW1#sh clock
.14:02:01.802 JST Fri Sep 27 2019
SW1#sh clock
.14:02:02.289 JST Fri Sep 27 2019
SW1#sh clock
.14:02:02.809 JST Fri Sep 27 2019
SW1#sh clock
.14:02:03.320 JST Fri Sep 27 2019
SW1#sh clock
.14:02:03.807 JST Fri Sep 27 2019
SW1#sh clock
.14:02:04.294 JST Fri Sep 27 2019
SW1#
SW1#sh clock
.14:02:04.747 JST Fri Sep 27 2019
SW1#sh clock
.14:02:05.309 JST Fri Sep 27 2019
SW1#sh clock
.14:02:05.812 JST Fri Sep 27 2019
SW1#sh clock
.14:02:06.307 JST Fri Sep 27 2019
SW1#sh clock
.14:02:06.743 JST Fri Sep 27 2019
SW1#sh clock
.14:02:07.196 JST Fri Sep 27 2019
SW1#sh clock
.14:02:07.666 JST Fri Sep 27 2019
SW1#sh clock
.14:02:08.136 JST Fri Sep 27 2019
SW1#sh clock
.14:02:08.597 JST Fri Sep 27 2019
SW1#sh clock
.14:02:09.050 JST Fri Sep 27 2019
SW1#sh clock
.14:02:09.545 JST Fri Sep 27 2019
SW1#sh clock
.14:02:09.998 JST Fri Sep 27 2019
SW1#sh clock
.14:02:10.434 JST Fri Sep 27 2019
SW1#sh clock
.14:02:10.904 JST Fri Sep 27 2019
SW1#sh clock
.14:02:11.357 JST Fri Sep 27 2019
SW1#sh clock
.14:02:11.818 JST Fri Sep 27 2019
SW1#sh clock
.14:02:12.271 JST Fri Sep 27 2019
SW1#sh clock
.14:02:12.732 JST Fri Sep 27 2019
SW1#sh clock
.14:02:13.211 JST Fri Sep 27 2019
SW1#sh clock
.14:02:13.689 JST Fri Sep 27 2019
SW1#sh clock
.14:02:14.175 JST Fri Sep 27 2019
SW1#sh clock
.14:02:14.746 JST Fri Sep 27 2019
SW1#sh clock
.14:02:15.333 JST Fri Sep 27 2019
SW1#sh clock
.14:02:15.794 JST Fri Sep 27 2019
SW1#sh clock
.14:02:16.298 JST Fri Sep 27 2019
SW1#sh clock
.14:02:16.742 JST Fri Sep 27 2019
SW1#sh clock
.14:02:17.220 JST Fri Sep 27 2019
SW1#sh clock
.14:02:17.715 JST Fri Sep 27 2019
SW1#sh clock
.14:02:18.177 JST Fri Sep 27 2019
SW1#
SW1#sh clock
.14:02:18.646 JST Fri Sep 27 2019
SW1#sh clock
.14:02:19.091 JST Fri Sep 27 2019
SW1#sh clock
.14:02:19.552 JST Fri Sep 27 2019
SW1#sh clock
.14:02:20.089 JST Fri Sep 27 2019
SW1#sh clock
.14:02:20.593 JST Fri Sep 27 2019
SW1#sh clock
.14:02:21.088 JST Fri Sep 27 2019
SW1#sh clock
.14:02:21.641 JST Fri Sep 27 2019
SW1#sh clock
.14:02:22.220 JST Fri Sep 27 2019
SW1#sh clock
.14:02:22.816 JST Fri Sep 27 2019
SW1#sh clock
.14:02:23.403 JST Fri Sep 27 2019
SW1#sh clock
.14:02:24.049 JST Fri Sep 27 2019
SW1#sh clock
.14:02:24.720 JST Fri Sep 27 2019
SW1#sh clock
.14:02:25.299 JST Fri Sep 27 2019
SW1#sh clock
.14:02:25.894 JST Fri Sep 27 2019
SW1#sh clock
.14:02:26.465 JST Fri Sep 27 2019
SW1#sh clock
.14:02:27.035 JST Fri Sep 27 2019
SW1#sh clock
.14:02:27.715 JST Fri Sep 27 2019
SW1#sh clock
.14:02:28.310 JST Fri Sep 27 2019
SW1#sh clock
.14:02:28.805 JST Fri Sep 27 2019
SW1#sh clock
.14:02:29.308 JST Fri Sep 27 2019
SW1#sh clock
.14:02:29.770 JST Fri Sep 27 2019
SW1#sh clock
.14:02:30.256 JST Fri Sep 27 2019
SW1#sh clock
.14:02:30.776 JST Fri Sep 27 2019
SW1#sh clock
.14:02:31.540 JST Fri Sep 27 2019
SW1#sh clock
.14:02:32.387 JST Fri Sep 27 2019
SW1#sh clock
.14:02:33.016 JST Fri Sep 27 2019
SW1#sh clock
.14:02:33.612 JST Fri Sep 27 2019
SW1#sh clock
.14:02:34.207 JST Fri Sep 27 2019
SW1#sh clock
.14:02:34.786 JST Fri Sep 27 2019
SW1#sh clock
.14:02:35.382 JST Fri Sep 27 2019
SW1#sh clock
.14:02:35.919 JST Fri Sep 27 2019
SW1#sh clock
.14:02:36.447 JST Fri Sep 27 2019
SW1#sh clock
.14:02:36.967 JST Fri Sep 27 2019
SW1#sh clock
.14:02:37.605 JST Fri Sep 27 2019
SW1#sh clock
.14:02:38.158 JST Fri Sep 27 2019
SW1#sh clock
.14:02:38.779 JST Fri Sep 27 2019
SW1#sh clock
.14:02:39.870 JST Fri Sep 27 2019
SW1#sh clock
.14:02:40.767 JST Fri Sep 27 2019
SW1#sh clock
.14:02:41.329 JST Fri Sep 27 2019
SW1#clock set 14:00:00 27 Sep 2019
SW1#clock set 14:00:00 27 Sep 2019
SW1#
.Sep 27 05:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 14:02:41 JST Fri Sep 27 2019 to 14:00:00 JST Fri Sep 27 2019, configured from console by console.
SW1#
.Sep 27 05:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 14:00:01 JST Fri Sep 27 2019 to 14:00:00 JST Fri Sep 27 2019, configured from console by console.
SW1#sh clock                      
.14:00:04.940 JST Fri Sep 27 2019
SW1#sh clock
.14:00:05.653 JST Fri Sep 27 2019
SW1#sh clock
.14:00:06.299 JST Fri Sep 27 2019
SW1#sh clock detail
.14:00:10.821 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:13.354 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:13.925 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:14.579 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:15.225 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:15.829 JST Fri Sep 27 2019
Time source is NTP
SW1#sh clock detail
.14:00:16.424 JST Fri Sep 27 2019
Time source is NTP
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#no ntp                 
SW1(config)#ntp server 10.0.128.254
SW1(config)#!
SW1(config)#ntt authenticate
              ^
% Invalid input detected at '^' marker.

SW1(config)#ntp authetnication-key 1 md5 pg1x
                     ^
% Invalid input detected at '^' marker.

SW1(config)#ntp trusted-key 1
SW1(config)#ntp server 10.0.128.254
SW1(config)#!
SW1(config)#ntp authenticate
SW1(config)#ntp authetnication-key 1 md5 pg1x
                     ^
% Invalid input detected at '^' marker.

SW1(config)#ntp trusted-key 1
SW1(config)#ntp server 10.0.128.254
SW1(config)#!
SW1(config)#ntp authenticate
SW1(config)#ntp authetication-key 1 md5 pg1x
                     ^
% Invalid input detected at '^' marker.

SW1(config)#ntp trusted-key 1
SW1(config)#ntp server 10.0.128.254
SW1(config)#!
SW1(config)#ntp authenticate
SW1(config)#ntp authentication-key 1 md5 pg1x
SW1(config)#ntp trusted-key 1
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.15:14:35.391 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:46.515 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:55.155 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:55.792 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:56.187 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:56.531 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:56.858 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:57.160 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:57.428 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:58.233 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:58.913 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:14:59.509 JST Sat Sep 28 2019
SW1(config)#sh clock status
               ^
% Invalid input detected at '^' marker.

SW1(config)#sh clock status  
               ^
% Invalid input detected at '^' marker.

SW1(config)#ntp server 10.0.128.254 key 1    
SW1(config)#end       
SW1#set
.Sep 28 06:23:08.464: %SYS-5-CONFIG_I: Configured from console by console
SW1#clock set 00:00:00 1 jan 2014
SW1#
.Dec 31 15:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 15:23:26 JST Sat Sep 28 2019 to 00:00:00 JST Wed Jan 1 2014, configured from console by console.
SW1#sh clock
.00:00:03.858 JST Wed Jan 1 2014
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#ntp status
                 ^
% Invalid input detected at '^' marker.

SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13978D3.3056F0FF (15:14:43.188 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.07 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000000 s/s
system poll interval is 64, last update was -181149248 sec ago.
SW1(config)#do sh clcok detail
                    ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock detail
.00:00:49.283 JST Wed Jan 1 2014
Time source is NTP
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do ntp?
ntp  

SW1(config)#do debug ntp all
NTP events debugging is on
NTP core messages debugging is on
NTP clock adjustments debugging is on
NTP reference clocks debugging is on
NTP packets debugging is on
SW1(config)#
.Dec 31 15:01:36.502: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:36.502: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:36.502: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:36.502: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:36.510: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:38.507: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:38.507: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:38.507: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:38.507: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:38.507: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:40.503: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:40.503: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:40.503: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:40.503: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:40.512: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:42.508: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:42.508: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:42.508: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:42.508: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:42.508: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:44.505: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:44.505: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:44.505: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:44.505: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:44.505: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:46.510: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:46.510: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:46.510: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:46.510: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:46.510: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:48.515: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:48.515: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:48.515: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:48.515: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:48.515: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:50.511: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:50.511: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:50.511: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:50.511: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:50.511: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:01:52.499: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:01:52.499: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:01:52.499: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:01:52.499: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:01:52.508: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13978D3.3056F0FF (15:14:43.188 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 2.44 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000000 s/s
system poll interval is 64, last update was -181149156 sec ago.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Dec 31 15:02:41.505: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:41.505: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:41.505: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:41.505: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:41.514: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:43.510: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:43.510: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:43.510: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:43.510: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:43.510: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:45.507: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:45.507: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:45.507: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:45.507: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:45.507: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:47.503: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:47.503: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:47.503: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:47.503: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:47.512: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:49.508: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:49.508: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:49.508: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:49.508: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:49.508: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:51.505: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:51.505: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:51.505: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:51.505: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:51.505: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:53.501: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:53.510: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:53.510: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:53.510: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:53.510: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:55.514: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:55.514: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:55.514: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:55.514: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:55.514: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:02:57.502: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:02:57.511: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:02:57.511: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:02:57.511: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:02:57.511: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13978D3.3056F0FF (15:14:43.188 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 3.40 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000000 s/s
system poll interval is 64, last update was -181149092 sec ago.
SW1(config)#
.Dec 31 15:04:00.509: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:00.509: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:00.509: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:04:00.509: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:04:00.509: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:04:02.506: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:02.514: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:02.514: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:04:02.514: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:04:02.514: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:04:04.511: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:04.511: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:04.511: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:04:04.511: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:04:04.511: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:04:06.516: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:06.516: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:06.516: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:04:06.516: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:04:06.516: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW1(config)#sh clock
               ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock
.00:04:38.552 JST Wed Jan 1 2014
SW1(config)#do sh clock detail
.00:04:42.385 JST Wed Jan 1 2014
Time source is NTP
SW1(config)#do sh ntp asso
SW1(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status       
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13978D3.3056F0FF (15:14:43.188 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 4.96 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000000000 s/s
system poll interval is 64, last update was -181148988 sec ago.
SW1(config)#end
SW1#reloa
.Dec 31 15:05:18.851: %SYS-5-CONFIG_I: Configured from console by console
SW1#reloa
SW1#clea   
SW1#clear nt
SW1#clear nt
SW1#clear nt
SW1#nt      
SW1#ntp ?
  clear  Clear the values

SW1#ntp clea
SW1#ntp clear 
% Incomplete command.

SW1#ntp clear ?
  drift  Clear the current drift value that is being used

SW1#ntp clear dr
SW1#ntp clear drift 
SW1#
.Dec 31 15:05:40.091: NTP Core(DEBUG): internal drift value reset.
.Dec 31 15:05:40.091: %NTP : Internal Drift Reset.
.Dec 31 15:05:40.091: %NTP : Drift string saved to persistent data: NTPv4_Drift=0.0
.Dec 31 15:05:40.091: %NTP : Exernal Drift Removed.
.Dec 31 15:05:40.091: %NTP : Drift Totally Removed.
SW1#
SW1#
SW1#
SW1#
SW1#sh clock 
.00:05:59.829 JST Wed Jan 1 2014
SW1#ntp ?           
  clear  Clear the values

SW1#ntp cle
SW1#ntp clear 
SW1#ntp clear 
SW1#ntp clear ?
  drift  Clear the current drift value that is being used

SW1#ntp clear dr
SW1#ntp clear drift ?
  <cr>

SW1#clea            
SW1#clear ?
  aaa                Clear AAA values
  access-list        Clear access list statistical information
  access-template    Access-template
  adjacency          Adjacent nodes
  archive            Clear archive data
  arp-cache          Clear the entire ARP cache
  authentication     Clear Auth Manager information
  bgp                Clear BGP connections
  bridge             Reset bridge forwarding cache
  call-home          Call-Home commands
  cdp                Reset cdp information
  cef                Cisco Express Forwarding
  clns               CLNS
  cns                CNS agents
  configuration      Clear configuration data
  controllers        Clear interface controller info
  counters           Clear counters on one or all interfaces
  crypto             Encryption subsystem
  cts                Cisco Trusted Security commands
  diagnostic         Diagnostic commands
  dot1x              Clear 802.1x information
  eap                Clear specified EAP details
          
SW1#restart ?
% Unrecognized command
SW1#relo    
SW1#reload ?
  /noverify    Don't verify file signature before reload.
  /verify      Verify file signature before reload.
  LINE         Reason for reload
  at           Reload at a specific time/date
  cancel       Cancel pending reload
  in           Reload after a time interval
  slot         Slot number card
  standby-cpu  Standby RP
  <cr>

SW1#clear n?
netconf  nmsp  

SW1#clear clo
SW1#clear clo
SW1#clear clo
SW1#clo      
SW1#clock ?
  set  Set the time and date

SW1#sh run | i ntp
ntp authentication-key 1 md5 095C495801 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1#sh mo
SW1#sh monitor 
Session 1
---------
Type                   : Local Session
Source Ports           : 
    Both               : Fa1/0/24
Destination Ports      : Fa1/0/12
    Encapsulation      : Replicate
          Ingress      : Disabled


SW1#sh clock status
             ^
% Invalid input detected at '^' marker.

SW1#sh clock
.00:09:34.896 JST Wed Jan 1 2014
SW1#sh clock detail
.00:09:38.704 JST Wed Jan 1 2014
Time source is NTP
SW1#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13978D3.3056F0FF (15:14:43.188 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 9.26 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, last update was -181148702 sec ago.
SW1#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16      -     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#no ntp
SW1(config)#
.Dec 31 15:10:07.494: NTP: Uninitialized interface Vlan1
.Dec 31 15:10:07.494: NTP: Uninitialized interface Vlan128
.Dec 31 15:10:07.494: NTP: Uninitialized interface Vlan129
.Dec 31 15:10:07.494: NTP: Uninitialized interface FastEthernet1/0/1
.Dec 31 15:10:07.494: NTP: Uninitialized interface FastEthernet1/0/2
.Dec 31 15:10:07.494: NTP: Uninitialized interface FastEthernet1/0/3
.Dec 31 15:10:07.494: NTP: Uninitialized interface FastEthernet1/0/4
.Dec 31 15:10:07.494: NTP: Uninitialized interface 
SW1(config)#FastEthernet1/0/5
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/6
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/7
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/8
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/9
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/10
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/11
SW1(config)#0:07.503: NTP: Uninitialized interface FastEthernet1/0/12
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/13
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/14
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/15
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/16
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/17
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/18
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/19
.Dec 31 15:1
SW1(config)#0:07.503: NTP: Uninitialized interface FastEthernet1/0/20
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/21
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/22
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/23
.Dec 31 15:10:07.503: NTP: Uninitialized interface FastEthernet1/0/24
.Dec 31 15:10:07.503: NTP: Uninitialized interface GigabitEthernet1/0/1
.Dec 31 15:10:07.503: NTP: Uninitialized interface GigabitEthernet1/0/2
.Dec 31 15:10:07.503: 
SW1(config)#NTP Core(INFO): deleted all the keys.
.Dec 31 15:10:07.503: NTP Core(INFO): cleared all the keys
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp server 10.0.128.254
SW1(config)#!
SW1(config)#ntp authenticate
SW1(config)#ntp authentication-key 1 md5 pg1x
SW1(config)#ntp trusted-key 1
SW1(config)#
.Dec 31 15:10:30.353: NTP Core(INFO): keys initilized.
.Dec 31 15:10:30.353: %NTP : Drift Read : 0.0
.Dec 31 15:10:30.353: NTP Core(DEBUG): drift value read: 0.000000000
.Dec 31 15:10:30.353: NTP: Initialized interface Vlan1
.Dec 31 15:10:30.353: NTP: Initialized interface Vlan128
.Dec 31 15:10:30.353: NTP: Initialized interface Vlan129
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/1
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/2
.Dec 31 15:10:30.353: NTP: I
SW1(config)#nitialized interface FastEthernet1/0/3
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/4
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/5
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/6
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/7
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/8
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/9
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/
SW1(config)#0/10
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/11
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/12
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/13
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/14
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/15
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/16
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/17
.Dec 31 15:10:30.353: 
SW1(config)#NTP: Initialized interface FastEthernet1/0/18
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/19
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/20
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/21
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/22
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/23
.Dec 31 15:10:30.353: NTP: Initialized interface FastEthernet1/0/24
.Dec 31 15:10:30.353: NTP: Initialized interface G
SW1(config)#igabitEthernet1/0/1
.Dec 31 15:10:30.353: NTP: Initialized interface GigabitEthernet1/0/2
.Dec 31 15:10:30.403: NTP Core(INFO): more memory added for keys.
.Dec 31 15:10:30.403: NTP Core(INFO): key (1) added.
.Dec 31 15:10:30.420: NTP Core(INFO): key (1) marked as trusted.
SW1(config)#
.Dec 31 15:10:39.388: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:39.388: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:39.388: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:10:39.388: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:10:39.388: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:10:39.388: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#no o 6.

.Dec 31 15:10:39.388: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
.Dec 31 15:10:40.352: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:40.352: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:40.352: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:10:40.352: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 1
SW1(config)#no ntp server 10.0.128.2545:10:40.352: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:10:40.352: NTP Core(INFO): synchronized to 10.0.128.254, stratum 2
.Dec 31 15:10:40.352: NTP: step(0x0ACC206E.A1B65500): local_offset = 0x00000000.00000000, curtime = 0xD66D5CF0.5A555F8F
.Sep 28 06:34:06.984: NTP Core(NOTICE): time reset 0.000000 s
SW1(config)#no ntp server 10.0.128.254
SW1(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock
.15:34:16.530 JST Sat Sep 28 2019
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do clock set 00:00:00 1 Jan 2015
SW1(config)#
.Dec 31 15:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 15:34:33 JST Sat Sep 28 2019 to 00:00:00 JST Thu Jan 1 2015, configured from console by console.
SW1(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock
.00:00:07.407 JST Thu Jan 1 2015
SW1(config)#ntp server 10.0.128.254 key 1
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh ntp statu
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.79 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp statu
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.87 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp statu
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.91 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.97 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#
.Dec 31 15:00:42.253: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:42.270: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:42.270: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:00:42.270: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:00:42.270: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:00:42.270: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#o 6.

.Dec 31 15:00:42.270: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, auth, 1 event, event_reach' (0xE014)
SW1(config)#
.Dec 31 15:00:44.249: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:44.249: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:44.249: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:00:44.249: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:00:44.249: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:00:44.249: NTP Core(INFO): synchronized to 10.0.128.254, strat
SW1(config)#um 2
SW1(config)#
.Dec 31 15:00:46.254: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:46.254: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:00:46.254: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:00:46.254: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:00:46.254: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:00:46.254: NTP: step(0x08EAEF89.BC9C2880): local_offset = 0x00
SW1(config)#000000.00000000, curtime = 0xD84E8E1E.413978D8
.Sep 28 06:35:19.991: NTP Core(NOTICE): time reset 0.000000 s
SW1(config)#sh co
.Sep 28 06:35:28.992: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Sep 28 06:35:28.992: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Sep 28 06:35:28.992: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:35:28.992: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 06:35:28.992: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 06:35:28.992: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#sh co 6.

.Sep 28 06:35:28.992: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, auth, 2 events, event_reach' (0xE024)
SW1(config)#sh clock
               ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock
.15:35:36.080 JST Sat Sep 28 2019
SW1(config)#
.Sep 28 06:35:35.988: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Sep 28 06:35:35.988: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Sep 28 06:35:35.988: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:35:35.988: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 06:35:35.988: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 06:35:36.986: NTP message sent to 10.0.128.254, from interface 'V
SW1(config)#lan128' (10.0.128.1).
.Sep 28 06:35:36.986: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Sep 28 06:35:36.986: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:35:36.986: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 06:35:36.986: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 06:35:36.986: NTP Core(INFO): synchronized to 10.0.128.254, stratum 2
.Sep 28 06:35:36.986: NTP Core(NOTICE): Clock is synchronized.
Sep 2
SW1(config)#8 06:35:37.993: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:37.993: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:37.993: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:37.993: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:37.993: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:35:38.991: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:38.991: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:38.991: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:38.991: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:38.991: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 06:35:39.989: NTP message sent to 10.0.128.254, from interface 'Vlan128
SW1(config)#' (10.0.128.1).
Sep 28 06:35:39.989: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:39.989: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:39.989: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:39.989: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 06:35:40.988: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:40.988: NTP message received from 10.0.128.254 on 
SW1(config)#interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:40.988: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:40.988: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:40.988: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do 
Sep 28 06:35:41.986: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:41.986: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:41.986: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:41.986: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:41.986: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 06:35:42.993: NTP message sent to 10.0.128.254, from interface 'Vlan128
SW1(config)#do sh' (10.0.128.1).
Sep 28 06:35:42.993: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:42.993: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:42.993: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:42.993: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 06:35:43.991: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:35:43.991: NTP message received from 10.0.128.254 on 
SW1(config)#do shinterface 'Vlan128' (10.0.128.1).
Sep 28 06:35:43.991: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:35:43.991: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:35:43.991: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
15:36:14.995 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:36:16.002 JST Sat Sep 28 2019
SW1(config)#do clock set 00:00:00 1 Jan 2015
SW1(config)#
Dec 31 15:00:00.000: NTP Core(NOTICE): Clock synchronization lost.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Dec 31 15:00:00.008: %SYS-6-CLOCKUPDATE: System clock has been updated from 15:36:23 JST Sat Sep 28 2019 to 00:00:00 JST Thu Jan 1 2015, configured from console by console.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.08 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614531 sec ago.
SW1(config)#do sh clock
.00:00:11.643 JST Thu Jan 1 2015
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:00:20.795 JST Thu Jan 1 2015
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.254    .INIT.          16 47978d     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.42 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614508 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.13 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614461 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 1.19 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614456 sec ago.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:01:25.823 JST Thu Jan 1 2015
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 1407155A14 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 1407155A14 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#
.Dec 31 15:03:10.832: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:10.832: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:10.832: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:10.832: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:10.832: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:11.830: NTP message received from 10.0.129.2 on interface 'Vl
SW1(config)#an129' (10.0.129.1).
.Dec 31 15:03:11.830: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:11.830: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:11.830: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:11.830: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:03:12.837: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:12.837: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:12.837: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:12.837: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:12.837: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:13.835: NTP message received from 10.0.129.2 on interface 'Vl
SW1(config)#an129' (10.0.129.1).
.Dec 31 15:03:13.835: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:13.835: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:13.835: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:13.835: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:14.833: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:14.833: NTP Core(DEBUG): ntp_receive: mes
SW1(config)#sage received
.Dec 31 15:03:14.833: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:14.833: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:14.833: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:15.832: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:15.832: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:15.832: NTP Core(DEBUG): ntp_receive: peer is 0x
SW1(config)#00000000, next action is 3.
.Dec 31 15:03:15.832: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:15.832: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:03:16.830: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:16.830: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:16.830: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:16.830: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:16.830: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:03:17.836: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:17.836: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:17.836: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:17.836: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:17.836: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:03:18.835: NTP message received from 10.0.129.2 on interface 'Vl
SW1(config)#an129' (10.0.129.1).
.Dec 31 15:03:18.835: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:03:18.835: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:03:18.835: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:03:18.835: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 1407155A14 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#ntp server 10.0.128.254 key 1
SW1(config)#no ntp server 10.0.128.254 key 1
.Dec 31 15:04:04.267: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:04.267: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:04.267: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:04.267: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:04.267: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:04:04.267: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#o 6.server 10.0.128.254 key 1   

.Dec 31 15:04:04.267: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, auth, 1 event, event_reach' (0xE014)
SW1(config)#ntp server 10.0.128.254 key 1
.Dec 31 15:04:06.272: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:06.272: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:06.272: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:06.272: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:06.272: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:04:06.272: NTP Core(INFO): synchronized to 10.0.128.254, strat
SW1(config)#um 2                         
SW1(config)#
.Dec 31 15:04:08.269: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:08.269: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:08.269: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:08.269: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:08.269: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:10.265: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:10.265: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:10.265: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:10.265: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:10.265: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:12.270: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:12.270: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:12.270: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:12.270: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:12.270: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:14.267: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:14.267: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:14.267: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:14.267: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:14.267: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:15.835: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:15.835: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:15.835: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:04:15.835: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:04:15.835: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
.Dec 31 15:04:16.271: NTP message sent to 10.0.128.254, from interface 'Vla
SW1(config)#n128' (10.0.128.1).
.Dec 31 15:04:16.271: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:16.271: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:16.271: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:16.271: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:18.268: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:18.268: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:18.268: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:18.268: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:18.268: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:04:20.273: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:20.273: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:04:20.273: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:04:20.273: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:04:20.273: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.00:04:24.652 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:26.422 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:27.361 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:41.697 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:42.595 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:42.981 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:43.325 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:43.560 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:44.398 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:58.667 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:04:59.280 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:05:08.272: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Dec 31 15:05:20.830: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:05:20.830: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:05:20.830: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:05:20.830: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:05:20.830: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.00:05:40.090 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:41.273 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:42.079 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:42.691 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:43.630 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:51.163 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:51.801 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:52.287 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:05:52.850 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:06:13.267: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
.Dec 31 15:06:24.835: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:06:24.835: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:06:24.835: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:06:24.835: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:06:24.835: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.00:06:38.534 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:07:19.269: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Dec 31 15:07:28.832: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:07:28.832: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:07:28.832: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:07:28.832: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:07:28.832: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#do sh clock
.00:07:39.955 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:41.658 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:43.135 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:44.301 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:45.165 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:45.911 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:47.052 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:48.386 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:49.359 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:50.005 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:51.406 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:52.547 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:53.167 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:53.553 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:53.838 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:54.107 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:54.392 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:54.669 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:54.954 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:55.214 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:55.457 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:55.701 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:55.969 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:57.261 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:58.058 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:58.519 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:58.872 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:07:59.283 JST Thu Jan 1 2015
SW1(config)#\
            ^
% Invalid input detected at '^' marker.

SW1(config)#do sh clock
.00:08:01.900 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:08:02.453 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:08:03.183 JST Thu Jan 1 2015
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 7.51 msec, peer dispersion is 65.24 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614036 sec ago.
SW1(config)#do 
.Dec 31 15:08:22.267: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
SW1(config)#   
SW1(config)#
SW1(config)#
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 7.72 msec, peer dispersion is 191.14 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614021 sec ago.
SW1(config)#
.Dec 31 15:08:33.835: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:08:33.835: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:08:33.835: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:08:33.835: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:08:3
SW1(config)#3.835: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
SW1(config)#
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    10.84.87.146     2    260     64    20  1.340 -709271 191.14
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 7.90 msec, peer dispersion is 191.14 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149614010 sec ago.
SW1(config)#do sh clock
.00:08:50.512 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:09:25.266: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:09:25.266: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:09:25.266: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:09:25.266: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:09:25.266: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.00:09:40.567 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:09:39.837: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:09:39.837: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:09:39.837: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:09:39.837: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:09:39.845: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.00:09:42.613 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:43.889 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:44.912 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:45.910 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:46.900 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:48.771 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:09:50.432 JST Thu Jan 1 2015
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 8.91 msec, peer dispersion is 441.40 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149613943 sec ago.
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.128.254    210.173.160.27   3     35     64    41  1.340 -709271 441.40
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 9.04 msec, peer dispersion is 441.40 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149613933 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 9.14 msec, peer dispersion is 441.40 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149613927 sec ago.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1397DB8.FD419061 (15:35:36.989 JST Sat Sep 28 2019)
clock offset is -709271637.0000 msec, root delay is 0.00 msec
root dispersion is 9.24 msec, peer dispersion is 441.40 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was -149613921 sec ago.
SW1(config)#do sh clock     
.00:10:18.726 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:10:20.924 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:10:28.273: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:28.273: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:10:28.273: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:10:28.273: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:10:28.273: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.00:10:37.425 JST Thu Jan 1 2015
SW1(config)#
.Dec 31 15:10:44.832: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:10:44.832: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:10:44.832: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:10:44.840: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:10:44.840: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:11:33.268: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:11:33.268: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:11:33.268: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:11:33.268: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:11:33.268: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
.Dec 31 15:11:49.843: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:11:49.843: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:11:49.843: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:11:49.843: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:11:49.843: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Dec 31 15:12:39.269: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:12:39.269: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:12:39.269: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:12:39.269: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:12:39.269: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
.00:12:47.725 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:49.268 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:49.839 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:50.275 JST Thu Jan 1 2015
SW1(config)#
SW1(config)#do sh clock
.00:12:51.550 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:52.255 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:52.783 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:53.236 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:53.706 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:54.159 JST Thu Jan 1 2015
SW1(config)#do sh clock
.Dec 31 15:12:52.842: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Dec 31 15:12:52.842: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:12:52.842: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Dec 31 15:12:52.842: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Dec 31 15:12:52.842: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh clock
.00:12:54.511 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:56.474 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:57.019 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:57.498 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:57.934 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:58.336 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:58.680 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:58.957 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:59.192 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:12:59.402 JST Thu Jan 1 2015
SW1(config)#do sh clock
.00:13:00.308 JST Thu Jan 1 2015
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#no ntp
SW1(config)#
.Dec 31 15:13:09.720: NTP: Uninitialized interface Vlan1
.Dec 31 15:13:09.720: Removed source 'Vlan128' from peer '10.0.128.254'
.Dec 31 15:13:09.720: NTP: Uninitialized interface Vlan128
.Dec 31 15:13:09.720: NTP: Uninitialized interface Vlan129
.Dec 31 15:13:09.720: NTP: Uninitialized interface FastEthernet1/0/1
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/2
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/3
.Dec 31 15:13:09.728: NTP: Uninitialized interfa
SW1(config)#ce FastEthernet1/0/4
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/5
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/6
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/7
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/8
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/9
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/10
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/1
SW1(config)#1
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/12
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/13
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/14
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/15
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/16
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/17
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/18
.Dec 31 15:
SW1(config)#13:09.728: NTP: Uninitialized interface FastEthernet1/0/19
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/20
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/21
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/22
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/23
.Dec 31 15:13:09.728: NTP: Uninitialized interface FastEthernet1/0/24
.Dec 31 15:13:09.728: NTP: Uninitialized interface GigabitEthernet1/0/1
.Dec 31 15:13:09.728: N
SW1(config)#TP: Uninitialized interface GigabitEthernet1/0/2
.Dec 31 15:13:09.737: NTP Core(INFO): deleted all the keys.
.Dec 31 15:13:09.737: NTP Core(INFO): cleared all the keys
SW1(config)#ntp server 10.0.128.254 key 1
SW1(config)#!
SW1(config)#ntp authenticate
SW1(config)#ntp authentication-key 1 md5 pg1x
SW1(config)#ntp trusted-key 1
SW1(config)#
.Dec 31 15:13:23.527: NTP Core(INFO): keys initilized.
.Dec 31 15:13:23.527: %NTP : Drift Read : 0.0
.Dec 31 15:13:23.527: NTP Core(DEBUG): drift value read: 0.000000000
.Dec 31 15:13:23.527: NTP: Initialized interface Vlan1
.Dec 31 15:13:23.527: NTP: Initialized interface Vlan128
.Dec 31 15:13:23.527: NTP: Initialized interface Vlan129
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/1
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/2
.De
SW1(config)#c 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/3
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/4
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/5
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/6
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/7
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/8
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/9
.Dec 31 15:13:23.527: NTP: Initialized
SW1(config)# interface FastEthernet1/0/10
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/11
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/12
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/13
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/14
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/15
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/16
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/1
SW1(config)#7
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/18
.Dec 31 15:13:23.527: NTP: Initialized interface FastEthernet1/0/19
.Dec 31 15:13:23.536: NTP: Initialized interface FastEthernet1/0/20
.Dec 31 15:13:23.536: NTP: Initialized interface FastEthernet1/0/21
.Dec 31 15:13:23.536: NTP: Initialized interface FastEthernet1/0/22
.Dec 31 15:13:23.536: NTP: Initialized interface FastEthernet1/0/23
.Dec 31 15:13:23.536: NTP: Initialized interface FastEthernet1/0/24
.Dec 31 15:13:23.536: NTP
SW1(config)#: Initialized interface GigabitEthernet1/0/1
.Dec 31 15:13:23.536: NTP: Initialized interface GigabitEthernet1/0/2
.Dec 31 15:13:23.578: NTP Core(INFO): more memory added for keys.
.Dec 31 15:13:23.578: NTP Core(INFO): key (1) added.
.Dec 31 15:13:23.595: NTP Core(INFO): key (1) marked as trusted.
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
SW1(config)#
.Dec 31 15:13:40.540: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:13:40.540: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:13:40.540: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:13:40.540: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:13:40.540: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:13:40.540: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#o 6.

.Dec 31 15:13:40.540: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, auth, 1 event, event_reach' (0xE014)
SW1(config)#
.Dec 31 15:13:42.536: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Dec 31 15:13:42.536: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:13:42.536: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:13:42.536: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:13:42.536: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:13:43.543: NTP message sent to 10.0.128.254, from interface 'V
SW1(config)#lan128' (10.0.128.1).
.Dec 31 15:13:43.543: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Dec 31 15:13:43.543: NTP Core(DEBUG): ntp_receive: message received
.Dec 31 15:13:43.543: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Dec 31 15:13:43.543: NTP Core(DEBUG): receive: packet given to process_packet
.Dec 31 15:13:43.543: NTP Core(INFO): synchronized to 10.0.128.254, stratum 2
.Dec 31 15:13:43.543: NTP: step(0x08EAEFF7.B6546800): local_offset = 
SW1(config)#0x00000000.00000000, curtime = 0xD84E9127.8B0D6B97
.Sep 28 06:50:07.255: NTP Core(NOTICE): time reset 0.000000 s
SW1(config)#do sh run | i ntp                
.Sep 28 06:50:22.556: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 06:50:22.556: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:50:22.556: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 06:50:22.556: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 06:50:22.556: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 0216030A13 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#do sh clock
.15:50:30.978 JST Sat Sep 28 2019
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.42 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#
.Sep 28 06:50:36.254: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Sep 28 06:50:36.254: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Sep 28 06:50:36.254: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:50:36.254: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 06:50:36.254: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 06:50:36.254: NTP Core(DEBUG): Peer becomes reachable, poll set t
SW1(config)#o 6.

.Sep 28 06:50:36.254: NTP Core(INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, auth, 2 events, event_reach' (0xE024)
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.64 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.67 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.70 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.72 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.74 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.77 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.79 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.82 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW1(config)#do sh clock     
.15:51:05.740 JST Sat Sep 28 2019
SW1(config)#do sh clock
.15:51:06.982 JST Sat Sep 28 2019
SW1(config)#do sh clock
.15:51:07.468 JST Sat Sep 28 2019
SW1(config)#do sh clock
.15:51:07.997 JST Sat Sep 28 2019
SW1(config)#do sh clock
.15:51:08.634 JST Sat Sep 28 2019
SW1(config)#                                 
.Sep 28 06:51:27.551: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
.Sep 28 06:51:27.551: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:51:27.551: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
.Sep 28 06:51:27.551: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
.Sep 28 06:51:27.551: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
.Sep 28 06:51:42.247: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
.Sep 28 06:51:42.247: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
.Sep 28 06:51:42.247: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 06:51:42.247: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 06:51:42.247: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 06:51:42.247: NTP Core(INFO): synchronized to 10.0.128.254, strat
SW1(config)#um 2
.Sep 28 06:51:42.247: NTP Core(NOTICE): Clock is synchronized.
SW1(config)#
Sep 28 06:51:44.252: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:44.252: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:44.252: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:44.252: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:44.252: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:46.249: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:46.249: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:46.249: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:46.249: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:46.249: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:48.254: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:48.254: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:48.254: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:48.254: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:48.254: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:50.250: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:50.250: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:50.250: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:50.250: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:50.250: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:52.255: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:52.255: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:52.255: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:52.255: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:52.255: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:54.252: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:54.252: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:54.252: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:54.252: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:54.252: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:56.248: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:56.248: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:56.248: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:56.248: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:56.248: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:51:58.253: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:58.253: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:51:58.253: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:51:58.253: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:51:58.253: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#do sh clock
15:52:03.471 JST Sat Sep 28 2019
SW1(config)#do sh clock
15:52:04.779 JST Sat Sep 28 2019
SW1(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E139817E.404E169A (15:51:42.251 JST Sat Sep 28 2019)
clock offset is 0.8815 msec, root delay is 60.54 msec
root dispersion is 3938.98 msec, peer dispersion is 0.16 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was 26 sec ago.
SW1(config)#
Sep 28 06:52:30.549: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:52:30.549: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:52:30.549: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:52:30.549: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:52:30.549: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:52:47.251: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:52:47.251: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:52:47.251: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:52:47.251: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:52:47.251: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:53:36.559: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:53:36.559: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:53:36.559: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:53:36.559: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:53:36.559: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:53:51.248: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:53:51.248: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:53:51.248: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:53:51.248: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:53:51.248: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:54:04.552: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:04.552: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:04.552: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:04.552: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:04.552: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:05.550: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 06:54:05.550: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:05.550: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:05.550: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:05.550: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:54:06.557: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:06.557: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:06.557: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:06.557: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:06.557: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:07.555: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 06:54:07.555: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:07.555: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:07.555: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:07.555: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:08.553: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:08.553: NTP Core(DEBUG): ntp_receive: message receive
SW1(config)#d
Sep 28 06:54:08.553: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:08.553: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:08.553: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:54:09.552: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:09.552: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:09.552: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:09.552: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:09.552: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:10.550: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 06:54:10.550: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:10.550: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:10.550: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:10.550: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:54:11.556: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:11.556: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:11.556: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:11.556: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:11.556: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
Sep 28 06:54:12.555: NTP message received from 10.0.129.2 on interface 'Vlan129'
SW1(config)# (10.0.129.1).
Sep 28 06:54:12.555: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:12.555: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:54:12.555: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:54:12.555: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#
Sep 28 06:54:57.249: NTP message sent to 10.0.128.254, from interface 'Vlan128' (10.0.128.1).
Sep 28 06:54:57.249: NTP message received from 10.0.128.254 on interface 'Vlan128' (10.0.128.1).
Sep 28 06:54:57.249: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:54:57.249: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 06:54:57.249: NTP Core(DEBUG): receive: packet given to process_packet
SW1(config)#
Sep 28 06:55:09.555: NTP message received from 10.0.129.2 on interface 'Vlan129' (10.0.129.1).
Sep 28 06:55:09.555: NTP Core(DEBUG): ntp_receive: message received
Sep 28 06:55:09.555: NTP Core(DEBUG): ntp_receive: peer is 0x00000000, next action is 3.
Sep 28 06:55:09.555: NTP Core(DEBUG): ntp_receive: doing fast answer to client.
Sep 28 06:55:09.555: NTP message sent to 10.0.129.2, from interface 'Vlan129' (10.0.129.1).
SW1(config)#end
SW1#u al
Sep 28 06:55:16.325: %SYS-5-CONFIG_I: Configured from console by console
SW1#no debu
SW1#no debug all
All possible debugging has been turned off
SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#do sh run | i ntp
ntp authentication-key 1 md5 0216030A13 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.128.254 key 1
SW1(config)#no ntp server 10.0.128.254 key 1
SW1(config)#ntp server 10.0.128.254         
SW1(config)#

SW2 Console Log

SW2#
*Mar  1 00:03:55.015: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan129, changed state to down
*Mar  1 00:03:55.124: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down
*Mar  1 00:03:55.141: %SYS-5-CONFIG_I: Configured from console by console
SW2#ping 10.0.129.1 repeat 1000
Type escape sequence to abort.
Sending 1000, 100-byte ICMP Echos to 10.0.129.1, timeout is 2 seconds:
.........
*Mar  1 00:04:24.945: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan129, changed state to up.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!
Success rate is 99 percent (990/1000), round-trip min/avg/max = 1/3/34 ms
SW2#conf t                                                 
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#ntp auth  
SW2(config)#ntp authenticat?
authenticate  authentication-key  

SW2(config)#ntp authenticate
SW2(config)#ntp auth
SW2(config)#ntp authenticati
SW2(config)#ntp authentication-key 1 md5 pg2x
SW2(config)#ntp tru
SW2(config)#ntp trusted-key 1
SW2(config)#ntp ser
SW2(config)#ntp server 10.0.129.1
SW2(config)#ntp server 10.0.129.1
SW2(config)#do sh clock          
05:17:33.750 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:17:37.097 UTC Sat Sep 28 2019
SW2(config)#no ntp server 10.0.129.1
SW2(config)#clo
SW2(config)#clock set
SW2(config)#clock set ?
% Unrecognized command
SW2(config)#do clock set 00:00:00 1 Nov 2000
SW2(config)#
.Nov  1 00:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 05:18:43 UTC Sat Sep 28 2019 to 00:00:00 UTC Wed Nov 1 2000, configured from console by console.
SW2(config)#do sh clock                     
.00:00:06.014 UTC Wed Nov 1 2000
SW2(config)#do sh clock status
                        ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock detail
.00:00:14.285 UTC Wed Nov 1 2000
Time source is NTP
SW2(config)#no ntp
SW2(config)#do sh clock detail
.00:00:27.590 UTC Wed Nov 1 2000
No time source
SW2(config)#
SW2(config)#
SW2(config)#do sh run | i ntp
SW2(config)#do sh clock
.00:00:47.596 UTC Wed Nov 1 2000
SW2(config)#do sh ntp assoc
SW2(config)#do sh ntp status
%NTP is not enabled.
SW2(config)#ntp authe
SW2(config)#ntp authenticate
SW2(config)#ntp auth
SW2(config)#ntp authenticati
SW2(config)#ntp authentication-key 1 md
SW2(config)#ntp authentication-key 1 md5 pg2x
SW2(config)#ntp tru
SW2(config)#ntp trusted-key 1
SW2(config)#ntp ser
SW2(config)#ntp server 10.0.129.1 ke   
SW2(config)#ntp server 10.0.129.1 key 1
SW2(config)# 
SW2(config)#
SW2(config)#
SW2(config)#do sh clock 
.00:02:22.958 UTC Wed Nov 1 2000
SW2(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.91 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .INIT.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock
.00:03:46.282 UTC Wed Nov 1 2000
SW2(config)#do sh clock detail
.00:03:49.470 UTC Wed Nov 1 2000
Time source is NTP
SW2(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 2.26 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2(config)#do sh ntp asso  
SW2(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp associations 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 2.83 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2(config)#do sh ntp assoc 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh clock
.00:04:55.505 UTC Wed Nov 1 2000
SW2(config)#do sh clock detail
.00:04:58.013 UTC Wed Nov 1 2000
Time source is NTP
SW2(config)#do sh clock detail
.00:04:58.642 UTC Wed Nov 1 2000
Time source is NTP
SW2(config)#do sh clock detail
.00:04:59.171 UTC Wed Nov 1 2000
Time source is NTP
SW2(config)#debu
SW2(config)#end 
SW2#d   
.Nov  1 00:05:06.351: %SYS-5-CONFIG_I: Configured from console by console
SW2#debug ntp
SW2#debug ntp ?
  adjust    NTP clock adjustments
  all       NTP all debugging on
  core      NTP core messages
  events    NTP events
  packet    NTP packet debugging
  refclock  NTP refclock messages

SW2#debug ntp all
NTP events debugging is on
NTP core messages debugging is on
NTP clock adjustments debugging is on
NTP reference clocks debugging is on
NTP packets debugging is on
SW2#
.Nov  1 00:05:12.626: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:05:12.626: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:05:12.626: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:05:12.626: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:05:12.626: NTP Core(NOTICE): ntp_receive: dropping message: crypto-NAK.
SW2#
SW2#
SW2#
SW2#
.Nov  1 00:06:05.625: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:06:05.625: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:06:05.625: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:06:05.625: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:06:05.625: NTP Core(NOTICE): ntp_receive: dropping message: crypto-NAK.
SW2#do sh clock
       ^
% Invalid input detected at '^' marker.

SW2#
.Nov  1 00:07:00.621: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:07:00.621: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:07:00.621: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:07:00.621: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:07:00.621: NTP Core(NOTICE): ntp_receive: dropping message: crypto-NAK.
SW2#sh clock
.00:07:07.953 UTC Wed Nov 1 2000
SW2#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (00:00:00.000 UTC Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 5.15 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .AUTH.          16      -     64     0  0.000   0.000 16000.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#       
.Nov  1 00:07:54.619: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:07:54.619: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:07:54.619: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:07:54.619: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:07:54.619: NTP Core(NOTICE): ntp_receive: dropping message: crypto-NAK.
SW2#conf
.Nov  1 00:08:17.620: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:08:17.620: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:08:17.620: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:08:17.620: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:08:17.620: NTP Core(NOTICE): ntp_receive: dropping message: crypto-NAK.
SW2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#ntp authenti
SW2(config)#ntp authenticati
SW2(config)#ntp authentication-key 1 md5 pg1x
SW2(config)#do sh run | i ntp
ntp authentication-key 1 md5 0216030A13 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.129.1 key 1
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
.Nov  1 00:09:09.621: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:09:09.621: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:09:09.621: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:09:09.621: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:09:09.621: NTP Core(DEBUG): receive: packet given to process_packet
.Nov  1 00:09:09.621: NTP Core(DEBUG): Peer becomes reachable, poll set to 6.
SW2(config)#

.Nov  1 00:09:09.621: NTP Core(INFO): peer 10.0.129.1 event 'event_reach' (0x84) status 'unreach, conf, auth, 1 event, event_reach' (0xE014)
SW2(config)#do sh clock
.00:10:07.444 UTC Wed Nov 1 2000
SW2(config)#do sh clock
.00:10:09.684 UTC Wed Nov 1 2000
SW2(config)#do sh clock
.00:10:14.071 UTC Wed Nov 1 2000
SW2(config)#
.Nov  1 00:10:15.623: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Nov  1 00:10:15.623: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Nov  1 00:10:15.623: NTP Core(DEBUG): ntp_receive: message received
.Nov  1 00:10:15.623: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Nov  1 00:10:15.623: NTP Core(DEBUG): receive: packet given to process_packet
.Nov  1 00:10:15.623: NTP Core(INFO): synchronized to 10.0.129.1, stratum 3

SW2(config)#.Nov  1 00:10:15.623: NTP: step(0x238F9033.732C8C00): local_offset = 0x00000000.00000000, curtime = 0xBDA9DDE7.9F8697CC
.Sep 28 05:28:59.073: NTP Core(NOTICE): time reset 0.000000 s
SW2(config)#do sh clock
.05:29:01.925 UTC Sat Sep 28 2019
SW2(config)#
.Sep 28 05:29:03.074: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Sep 28 05:29:03.074: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Sep 28 05:29:03.074: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:29:03.074: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 05:29:03.074: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 05:29:03.074: NTP Core(DEBUG): Peer becomes reachable, poll set to 6.
SW2(config)#

.Sep 28 05:29:03.074: NTP Core(INFO): peer 10.0.129.1 event 'event_reach' (0x84) status 'unreach, conf, auth, 2 events, event_reach' (0xE024)
.Sep 28 05:29:04.072: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
.Sep 28 05:29:04.072: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
.Sep 28 05:29:04.072: NTP Core(DEBUG): ntp_receive: message received
.Sep 28 05:29:04.072: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
.Sep 28 05:2
SW2(config)#9:04.072: NTP Core(DEBUG): receive: packet given to process_packet
.Sep 28 05:29:04.072: NTP Core(INFO): synchronized to 10.0.129.1, stratum 3
.Sep 28 05:29:04.072: NTP Core(NOTICE): Clock is synchronized.
Sep 28 05:29:05.070: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:05.070: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:05.070: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:05.070: NTP Core(DEBUG): ntp_re
SW2(config)#ceive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:05.070: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 05:29:06.069: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:06.069: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:06.069: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:06.069: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:06.069: NTP Core(DEBUG): 
SW2(config)#receive: packet given to process_packet
Sep 28 05:29:07.075: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:07.075: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:07.075: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:07.075: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:07.075: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 05:29:08.074: NTP message sent to 10
SW2(config)#do sh clock.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:08.074: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:08.074: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:08.074: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:08.074: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 05:29:09.072: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:09.072: NTP message r
SW2(config)#do sh clockeceived from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:09.072: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:09.072: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:09.072: NTP Core(DEBUG): receive: packet given to process_packet
SW2(config)#do sh clock
05:29:11.437 UTC Sat Sep 28 2019
SW2(config)#
Sep 28 05:29:10.070: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:10.070: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:10.070: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:10.070: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:10.070: NTP Core(DEBUG): receive: packet given to process_packet
Sep 28 05:29:11.077: NTP message sent to 10.0.129.1, from int
SW2(config)#erface 'Vlan129' (10.0.129.2).
Sep 28 05:29:11.077: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:29:11.077: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:29:11.077: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:29:11.077: NTP Core(DEBUG): receive: packet given to process_packet
SW2(config)#do sh clock
05:29:13.912 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:29:14.902 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:29:15.565 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:29:16.152 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:29:16.814 UTC Sat Sep 28 2019
SW2(config)#do sh clock
05:29:17.435 UTC Sat Sep 28 2019
SW2(config)#u   
Sep 28 05:30:06.072: NTP message sent to 10.0.129.1, from interface 'Vlan129' (10.0.129.2).
Sep 28 05:30:06.072: NTP message received from 10.0.129.1 on interface 'Vlan129' (10.0.129.2).
Sep 28 05:30:06.072: NTP Core(DEBUG): ntp_receive: message received
Sep 28 05:30:06.072: NTP Core(DEBUG): ntp_receive: peer is 0x04A817D8, next action is 1.
Sep 28 05:30:06.072: NTP Core(DEBUG): receive: packet given to process_packet
SW2(config)#do sh ntp status
Clock is synchronized, stratum 4, reference is 10.0.129.1    
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396E20.13DB79DF (05:29:04.077 UTC Sat Sep 28 2019)
clock offset is 0.8200 msec, root delay is 58.07 msec
root dispersion is 3953.04 msec, peer dispersion is 0.76 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000003 s/s
system poll interval is 64, last update was 70 sec ago.
SW2(config)#do u all
All possible debugging has been turned off
SW2(config)#end    
SW2#sh ntp 
.Sep 28 05:55:17.155: %SYS-5-CONFIG_I: Configured from console by console
SW2#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396E20.13DB79DF (05:29:04.077 UTC Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 17.91 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000003 s/s
system poll interval is 64, last update was 1575 sec ago.
SW2#sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E1396E20.13DB79DF (05:29:04.077 UTC Sat Sep 28 2019)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 17.95 msec, peer dispersion is 0.00 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000003 s/s
system poll interval is 64, last update was 1578 sec ago.
SW2#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .NULL.          16     46     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2#sh clock
.05:55:42.480 UTC Sat Sep 28 2019
SW2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#clock
SW2(config)#clock set
SW2(config)#clock tim
SW2(config)#clock timezone JST 9
SW2(config)#
.Sep 28 05:56:14.844: %SYS-6-CLOCKUPDATE: System clock has been updated from 05:56:14 UTC Sat Sep 28 2019 to 14:56:14 JST Sat Sep 28 2019, configured from console by console.
SW2(config)#end
SW2#sh clock
.14:56:19.533 JST Sat Sep 28 2019
SW2#
.Sep 28 05:56:17.587: %SYS-5-CONFIG_I: Configured from console by console
SW2#sh clock
.14:56:21.127 JST Sat Sep 28 2019
SW2#sh clock
.14:56:21.697 JST Sat Sep 28 2019
SW2#sh clock
.14:56:22.284 JST Sat Sep 28 2019
SW2#sh clock
.14:56:22.796 JST Sat Sep 28 2019
SW2#
SW2#
SW2#
SW2#
SW2#sh clock
.15:04:00.445 JST Sat Sep 28 2019
SW2#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW2(config)#ntp ser
SW2(config)#no ntp server 10.0.129.1 key 1
SW2(config)#ntp server 10.0.129.1 key 1   
SW2(config)#do sh clcok                   
                    ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock
15:25:01.902 JST Sat Sep 28 2019
SW2(config)#do sh ntp
% Incomplete command.

SW2(config)#do sh ntp status
Clock is synchronized, stratum 4, reference is 10.0.129.1    
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E13979FD.17508600 (15:19:41.091 JST Sat Sep 28 2019)
clock offset is 38.9055 msec, root delay is 58.92 msec
root dispersion is 60.44 msec, peer dispersion is 69.03 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000192 s/s
system poll interval is 64, last update was 326 sec ago.
SW2(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock
15:25:18.268 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:40.722 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:41.486 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:41.905 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:42.257 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:42.585 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:42.887 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:43.180 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:43.390 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:43.608 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:43.826 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:43.977 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:44.204 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:44.439 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:45.496 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:46.108 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:46.418 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:46.662 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:46.938 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:47.190 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:47.408 JST Sat Sep 28 2019
SW2(config)#do sh clock
.15:26:47.727 JST Sat Sep 28 2019
SW2(config)#
SW2(config)#do sh clock
.15:26:48.633 JST Sat Sep 28 2019
SW2(config)#ntp server 10.0.129.1 key 1   
SW2(config)#ntp server 10.0.129.1 key 1
SW2(config)#ntp server 10.0.129.1 key 1
SW2(config)#ntp server 10.0.129.1 key 1
SW2(config)#no ntp server 10.0.129.1 key 1
SW2(config)#ntp server 10.0.129.1 key 1   
SW2(config)#do sh clock
.15:27:09.479 JST Sat Sep 28 2019
SW2(config)#no ntp 
SW2(config)#do clock set 00:00:00 3 Jan 2010
SW2(config)#
.Jan  2 15:00:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 15:38:42 JST Sat Sep 28 2019 to 00:00:00 JST Sun Jan 3 2010, configured from console by console.
SW2(config)#do sh ntp status
%NTP is not enabled.
SW2(config)#do sh run | i ntp
SW2(config)#ntp authenticate
SW2(config)#ntp authentication-key 1 md5 pg1x
SW2(config)#ntp trusted-key 1
SW2(config)#ntp server 10.0.129.1 1 key
                                  ^
% Invalid input detected at '^' marker.

SW2(config)#ntp server 10.0.129.1 key 1
SW2(config)#do sh clock status
                        ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock
.00:01:11.210 JST Sun Jan 3 2010
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      .INIT.          16     17     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 0.85 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2(config)#do sh ntp status
Clock is unsynchronized, stratum 16, no reference clock
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is 00000000.00000000 (09:00:00.000 JST Mon Jan 1 1900)
clock offset is 0.0000 msec, root delay is 0.00 msec
root dispersion is 2.47 msec, peer dispersion is 0.00 msec
loopfilter state is 'FSET' (Drift set from file), drift is 0.000000000 s/s
system poll interval is 64, never updated.
SW2(config)#do sh ntp assoc 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      10.0.128.254    16     12     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      10.0.128.254    16     14     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      10.0.128.254    16     15     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.129.1      10.0.128.254    16     16     64     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh clock
.00:03:28.456 JST Sun Jan 3 2010
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#
SW2(config)#do sh clcok
                    ^
% Invalid input detected at '^' marker.

SW2(config)#do sh clock
.00:13:49.247 JST Sun Jan 3 2010
SW2(config)#do sh clock
.00:13:53.039 JST Sun Jan 3 2010
SW2(config)#do sh run | i ntp
ntp authentication-key 1 md5 0216030A13 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.129.1 key 1
SW2(config)#do sh run | i ntp
ntp authentication-key 1 md5 0216030A13 7
ntp authenticate
ntp trusted-key 1
ntp server 10.0.129.1 key 1
SW2(config)#do sh clock
15:54:54.960 JST Sat Sep 28 2019
SW2(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~10.0.129.1      10.0.128.254     3     52     64     1  2.169  -0.482  0.068
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW2(config)#do sh ntp status
Clock is synchronized, stratum 4, reference is 10.0.129.1    
nominal freq is 119.2092 Hz, actual freq is 119.2092 Hz, precision is 2**17
reference time is E139820D.8EFEF54A (15:54:05.558 JST Sat Sep 28 2019)
clock offset is -0.4828 msec, root delay is 64.21 msec
root dispersion is 3946.20 msec, peer dispersion is 0.06 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is 0.000000000 s/s
system poll interval is 64, last update was 63 sec ago.
SW2(config)#end
SW2#u all
All possible debugging has been turned off
SW2#
Sep 28 06:55:25.419: %SYS-5-CONFIG_I: Configured from console by console
SW2#

ACL

SW1

configure terminal
!
vtp mode transparent
!
vlan 128-130
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.1 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.1 255.255.255.0
exit
interface Vlan 130
 ip address 10.0.130.1 255.255.255.0
exit
!
interface FastEthernet 1/0/21
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 130
exit
!
end

SW2

configure terminal
!
vtp mode transparent
!
vlan 128-130
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.2 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.2 255.255.255.0
exit
interface Vlan 130
 ip address 10.0.130.2 255.255.255.0
exit
!
interface FastEthernet 1/0/21
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 130
exit
!
end

SW3

configure terminal
!
vtp mode transparent
!
vlan 128-130
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.3 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.3 255.255.255.0
exit
interface Vlan 130
 ip address 10.0.130.3 255.255.255.0
exit
!
interface FastEthernet 1/0/21
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 130
exit
!
end

SW4

configure terminal
!
vtp mode transparent
!
vlan 128-130
exit
!
ip routing
!
interface Vlan 128
 ip address 10.0.128.4 255.255.255.0
exit
interface Vlan 129
 ip address 10.0.129.4 255.255.255.0
exit
interface Vlan 130
 ip address 10.0.130.4 255.255.255.0
exit
!
interface FastEthernet 1/0/23
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface FastEthernet 1/0/24
 switchport trunk encapsulation dot1q
 switchport mode trunk
 switchport trunk allowed vlan 129,130
exit
interface range FastEthernet 1/0/1 - 3
 spanning-tree portfast
 switchport mode access
 switchport access vlan 130
exit
!
end

SW10

configure terminal
!
vtp mode transparent
!
vlan 128
exit
!
ntp logging
clock timezone JST 9
ntp server 10.0.128.254
ntp server 10.0.128.1
ntp server 10.0.128.2
ntp server 10.0.128.3
ntp server 10.0.128.4
!
interface Vlan 128
 ip address 10.0.128.10 255.255.255.0
exit
!
interface range FastEthernet 0/1 - 8
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
interface GigabitEthernet 0/1
 spanning-tree portfast trunk
 switchport mode trunk
 switchport trunk allowed vlan 128
exit
!
end

R1

clock set 00:00:00 1 Jan 2001
clock update-calendar
!
configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
ntp server 10.0.130.1
ntp server 10.0.130.2
ntp server 10.0.130.3
ntp server 10.0.130.4
!
interface range FastEthernet 0/0
 ip address 10.0.130.11 255.255.255.0
 no shutdown
exit
!
ip route 0.0.0.0 0.0.0.0 10.0.130.1
!
end

R2

clock set 00:00:00 1 Jan 2001
clock update-calendar
!
configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
ntp server 10.0.130.1
ntp server 10.0.130.2
ntp server 10.0.130.3
ntp server 10.0.130.4
!
interface range FastEthernet 0/0
 ip address 10.0.130.12 255.255.255.0
 no shutdown
exit
!
ip route 0.0.0.0 0.0.0.0 10.0.130.2
!
end

R3

clock set 00:00:00 1 Jan 2001
clock update-calendar
!
configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
ntp server 10.0.130.1
ntp server 10.0.130.2
ntp server 10.0.130.3
ntp server 10.0.130.4
!
interface range FastEthernet 0/0
 ip address 10.0.130.13 255.255.255.0
 no shutdown
exit
!
ip route 0.0.0.0 0.0.0.0 10.0.130.3
!
end

SW1

configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
!
ntp peer 10.0.129.2
ntp peer 10.0.129.3
ntp peer 10.0.129.4
ntp master 5
!
end

SW2

configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
!
ntp peer 10.0.129.1
ntp peer 10.0.129.3
ntp peer 10.0.129.4
ntp master 5
!
end

SW3

configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
!
ntp peer 10.0.129.1
ntp peer 10.0.129.2
ntp peer 10.0.129.4
ntp master 5
!
end

SW4

configure terminal
!
clock timezone JST 9
ntp logging
!
ntp server 10.0.128.254
!
ntp peer 10.0.129.1
ntp peer 10.0.129.2
ntp peer 10.0.129.3
ntp master 5
!
end

SW1

configure terminal
!
access-list 1 permit host 10.0.129.2
access-list 1 permit host 10.0.129.3
access-list 1 permit host 10.0.129.4
access-list 1 deny any log
access-list 2 permit host 10.0.130.11
access-list 2 permit host 10.0.130.12
access-list 2 permit host 10.0.130.13
access-list 2 deny any log
access-list 3 permit host 10.0.128.254
!
ntp access-group peer 1
ntp access-group serve-only 2
ntp access-group peer 3
!
end

do clock set 00:00:00 1 Jan 2001

not allowed peer or server increase when value.

Console Log

SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~127.127.1.1     .LOCL.           4      9     16   377  0.000   0.000  0.232
 ~10.0.129.2      10.0.128.254     3     48   1024   376  2.467  16.459  0.159
 ~10.0.129.3      .INIT.          16   1290   1024     0  0.000   0.000 16000.
 ~10.0.129.4      .INIT.          16   1351   1024     0  0.000   0.000 16000.
*~10.0.128.254    10.84.87.146     2   1954   1024    36  1.589  16.735 15.202
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

SW2#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~127.127.1.1     .LOCL.           4      7     16   377  0.000   0.000  0.232
 ~10.0.129.1      10.0.128.254     3      1     64   376  4.326 -11.880  0.898
 ~10.0.129.3      10.0.128.254     3      8     64   377  2.827  -0.120  0.294
 ~10.0.129.4      10.0.128.254     3      2     64   377  1.667 -13.621  0.858
*~10.0.128.254    10.84.87.146     2     43     64   377  1.107  16.413  3.286
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

SW4#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~127.127.1.1     .LOCL.           4     12     16   377  0.000   0.000  0.250
 ~10.0.129.1      10.0.128.254     3    407     64   360  1.738   4.451 193.03
 ~10.0.129.2      10.0.128.254     3     17     64   377  3.333  12.345  0.168
 ~10.0.129.3      10.0.128.254     3     27     64   377  1.809  12.243  0.062
*~10.0.128.254    10.84.87.146     2     39     64   377  0.961  31.267  2.910
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

SW10#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.128.1      .INIT.          16   1991    128     0  0.000   0.000 15937.
 ~10.0.128.2      10.0.128.254     3     14     64   377  2.919   6.713  0.136
 ~10.0.128.3      10.0.128.254     3      0     64   377  1.845   6.019  0.119
 ~10.0.128.4      10.0.128.254     3      1     64   377  2.632   1.282  0.559
*~10.0.128.254    10.84.87.146     2     24     64   377  1.190  25.540  3.901
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

Sep 29 04:00:54.598: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.128.10 2 packets
Sep 29 04:00:54.598: %SEC-6-IPACCESSLOGS: list 2 denied 10.0.128.10 2 packets
Sep 29 04:00:54.598: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.12 45 packets
Sep 29 04:00:54.598: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.13 9 packets
SW1(config)#do sh acc      
SW1(config)#do sh access-li
SW1(config)#do sh access-lists 
Standard IP access list 1
    20 permit 10.0.129.3 (126 matches)
    10 permit 10.0.129.2 (162 matches)
    30 permit 10.0.129.4 (66 matches)
    40 deny   any log (386 matches)
Standard IP access list 2
    10 permit 10.0.130.11 (153 matches)
    20 permit 10.0.130.12 (153 matches)
    30 permit 10.0.130.13 (45 matches)
    40 deny   any log (10 matches)
Standard IP access list 3
    10 permit 10.0.128.254 (1 match)
SW1(config)#
Sep 29 04:02:12.159: NTP Core (NOTICE): ntp_receive: dropping message: restricted..
SW1(config)#do sh run | i ntp access
ntp access-group peer 3
ntp access-group peer 1
ntp access-group serve-only 2
SW1(config)#
Sep 29 04:02:54.597: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.11 53 packets
SW1(config)#
Sep 29 04:04:22.158: NTP Core (NOTICE): ntp_receive: dropping message: restricted..
SW1(config)#

Disable NTP Interface

Catalyst 3750 not applicable this command.

R3

configure terminal
!
interface FastEthernet 0/0
 ntp disable
!
end

Console Log

R3#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    166    256   377  2.713 -43.554  0.166
 ~10.0.130.2      10.0.128.254     3    156    256   377  2.537 -18.432  0.064
 ~10.0.130.3      10.0.128.254     3    143    256   377  2.012 -19.602  0.086
 ~10.0.130.4      10.0.128.254     3    175    256   377  1.949 -24.000  0.134
*~10.0.128.254    10.84.87.146     2    128    256   377  1.278  -3.481 11.406
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3      0    256   377  1.985 -44.786  3.660
 ~10.0.130.2      10.0.128.254     3    233    256   377  2.152 -18.472  0.153
 ~10.0.130.3      10.0.128.254     3    219    256   377  1.723 -19.774  0.067
 ~10.0.130.4      10.0.128.254     3      1    256   377  1.825 -23.951  0.163
*~10.0.128.254    10.84.87.146     2    206    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#int f0/0
R3(config-if)#ntp ?
  broadcast  Configure NTP broadcast service
  disable    Disable NTP traffic (both IP and IPv6)
  multicast  Configure NTP multicast service

R3(config-if)#ntp disa
R3(config-if)#ntp disable 
R3(config-if)#end
R3#sh n
Sep 29 04:23:33.236: %SYS-5-CONFIG_I: Configured from console by console
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     20    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     11    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3      6    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     33    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    242    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     21    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     12    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3      7    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     34    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    243    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     23    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     14    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3      9    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     36    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    245    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     24    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     15    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     10    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     37    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    246    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     25    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     16    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     11    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     38    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    247    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     26    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     17    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     12    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     39    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    248    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     27    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     18    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     13    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     40    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    249    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     28    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     19    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     14    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     41    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    250    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     29    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     20    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     15    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     42    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    251    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     30    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     21    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     16    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     43    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    252    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     32    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     23    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     18    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     45    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    254    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     34    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     25    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     20    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     47    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    256    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     35    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     26    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     21    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     48    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    257    256   377  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     37    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     28    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     23    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     50    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    259    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     38    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     29    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     24    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     51    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    260    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     39    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     30    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     25    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     52    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    261    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     40    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     31    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     26    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     53    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    262    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     42    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     33    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     28    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     55    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    264    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     43    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     34    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     29    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     56    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    265    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     44    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     35    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     30    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     57    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    266    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     45    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     36    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     31    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     58    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    267    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#sh ntp asso

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     47    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     38    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     33    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3     60    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    269    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R3(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 250.0000 Hz, actual freq is 250.0202 Hz, precision is 2**24
reference time is E13AAC54.A6F2596D (13:06:44.652 JST Sun Sep 29 2019)
clock offset is -3.4810 msec, root delay is 54.28 msec
root dispersion is 27.81 msec, peer dispersion is 12.53 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000080859 s/s
system poll interval is 256, last update was 1049 sec ago.
R3(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 250.0000 Hz, actual freq is 250.0202 Hz, precision is 2**24
reference time is E13AAC54.A6F2596D (13:06:44.652 JST Sun Sep 29 2019)
clock offset is -3.4810 msec, root delay is 54.28 msec
root dispersion is 27.84 msec, peer dispersion is 12.53 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000080859 s/s
system poll interval is 256, last update was 1051 sec ago.
R3(config)#do sh ntp status
Clock is synchronized, stratum 3, reference is 10.0.128.254  
nominal freq is 250.0000 Hz, actual freq is 250.0202 Hz, precision is 2**24
reference time is E13AAC54.A6F2596D (13:06:44.652 JST Sun Sep 29 2019)
clock offset is -3.4810 msec, root delay is 54.28 msec
root dispersion is 27.90 msec, peer dispersion is 12.53 msec
loopfilter state is 'CTRL' (Normal Controlled Loop), drift is -0.000080859 s/s
system poll interval is 256, last update was 1055 sec ago.
R3(config)#no ntp disable  
                  ^
% Invalid input detected at '^' marker.

R3(config)#no ntp en      
R3(config)#ntp ena  
R3(config)#ntp ena
R3(config)#ntp ena
R3(config)#ntp ?  
  access-group        Control NTP access
  allow               Allow processing of packets
  authenticate        Authenticate time sources
  authentication-key  Authentication key for trusted time sources
  broadcastdelay      Estimated round-trip delay
  clock-period        Length of hardware clock tick
  logging             Enable NTP message logging
  master              Act as NTP master clock
  max-associations    Set maximum number of associations
  maxdistance         Maximum Distance for synchronization
  panic               Reject time updates > panic threshold 
  passive             NTP passive mode
  peer                Configure NTP peer
  server              Configure NTP server
  source              Configure interface for source address
  trusted-key         Key numbers for trusted time sources
  update-calendar     Periodically update calendar with NTP time

R3(config)#ntp disa
R3(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    103    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     94    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     89    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    116    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    325    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    105    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     96    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     91    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    118    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    327    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    107    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     98    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     93    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    120    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    329    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    109    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    100    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     95    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    122    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    331    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    110    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    101    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3     96    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    123    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    332    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config)#int f0/0
R3(config-if)#no ntp disa
R3(config-if)#no ntp disable 
R3(config-if)#int f0/0       
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    156    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    147    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    142    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    169    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    378    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    158    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    149    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    144    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    171    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    380    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    159    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    150    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    145    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    172    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    381    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    161    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    152    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    147    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    174    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    383    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    162    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    153    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    148    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    175    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    384    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    163    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    154    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    149    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    176    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    385    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    164    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    155    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    150    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    177    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    386    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    165    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    156    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    151    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    178    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    387    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    166    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    157    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    152    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    179    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    388    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    167    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    158    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    153    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    180    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    389    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#debug ntp all
                ^
% Invalid input detected at '^' marker.

R3(config-if)#do debug ntp all
NTP events debugging is on
NTP core messages debugging is on
NTP clock adjustments debugging is on
NTP reference clocks debugging is on
NTP packets debugging is on
R3(config-if)#ntp disable     
R3(config-if)#              
R3(config-if)#
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    193    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    184    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    179    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    206    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    415    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    195    256   377  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    186    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    181    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    208    256   377  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    417    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc
Sep 29 04:27:03.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:03.554: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:05.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:05.550: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:07.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:07.550: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:09.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:09.550: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:11.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:11.550: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:13.550: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:13.554: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:14.550: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#do sh ntp assoc
Sep 29 04:27:14.550: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:15.549: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#do sh ntp assoc
Sep 29 04:27:15.549: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:16.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#do sh ntp assoc
Sep 29 04:27:16.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:17.549: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:17.549: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:18.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:18.549: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:19.549: NTP message sent to 10.0.130.4, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#do sh ntp assoc
Sep 29 04:27:19.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:20.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#do sh ntp assoc
Sep 29 04:27:20.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    246    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    237    256   377  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    232    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    259    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    468    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
Sep 29 04:27:22.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:22.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    250    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3    241    256   376  2.065 -18.822  0.066
 ~10.0.130.3      10.0.128.254     3    236    256   377  1.723 -19.774  2.172
 ~10.0.130.4      10.0.128.254     3    263    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    472    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
Sep 29 04:27:24.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:24.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:25.549: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#
Sep 29 04:27:25.549: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:26.549: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#
Sep 29 04:27:26.553: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:27.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:27.548: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#do sh ntp assoc
Sep 29 04:27:28.548: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:28.552: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:29.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#ntp disable    
Sep 29 04:27:29.548: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:30.548: NTP message sent to 10.0.130.1, from interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#ntp disable
Sep 29 04:27:30.552: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
Sep 29 04:27:31.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:31.548: NTP IPv4 disabled on interface FastEthernet0/0, packet dropped.
R3(config-if)#no ntp disable
R3(config-if)#
Sep 29 04:27:33.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:33.548: NTP message received from 10.0.130.2 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:33.548: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:33.548: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5D48, next action is 1.
Sep 29 04:27:33.552: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:35.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:35.548: NTP message received from 10.0.130.2 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:35.548: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:35.548: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5D48, next action is 1.
Sep 29 04:27:35.552: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:37.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:37.548: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:37.548: NTP message received from 10.0.130.2 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:37.548: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:37.552: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5D48, next action is 1.
Sep 29 04:27:37.552: NTP Core(DEBUG): receive: packet given to process_packet
Sep 29 04:27:37.552: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#
Sep 29 04:27:37.552: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:37.552: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:37.552: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:39.548: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:39.548: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:39.548: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:39.548: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:39.548: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:39.548: NTP Core(DEBUG): receive: packet given to process_packet
Sep 29 04:27:39.552: NTP message received from 10.0.130.2 on interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#
Sep 29 04:27:39.552: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:39.552: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5D48, next action is 1.
Sep 29 04:27:39.552: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:41.547: NTP message sent to 10.0.130.2, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:41.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:41.547: NTP message received from 10.0.130.2 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:41.547: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:41.547: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5D48, next action is 1.
Sep 29 04:27:41.547: NTP Core(DEBUG): receive: packet given to process_packet
Sep 29 04:27:41.551: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
R3(config-if)#
Sep 29 04:27:41.551: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:41.551: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:41.551: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:43.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:43.547: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:43.547: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:43.547: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:43.547: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:45.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:45.547: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:45.547: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:45.547: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:45.547: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#do sh nt
Sep 29 04:27:47.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:47.551: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:47.551: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:47.551: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:47.551: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    274    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3      8    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      0    256   377  1.733 -19.625  1.986
 ~10.0.130.4      10.0.128.254     3    287    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    496    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
Sep 29 04:27:49.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:49.547: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:49.547: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:49.547: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:49.547: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    277    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     11    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      1    256   377  2.121 -20.181  0.081
 ~10.0.130.4      10.0.128.254     3    290    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    499    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
Sep 29 04:27:51.547: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:51.547: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:51.547: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:51.547: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:51.547: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#
Sep 29 04:27:53.546: NTP message sent to 10.0.130.3, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:53.546: NTP message received from 10.0.130.3 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:27:53.546: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:27:53.546: NTP Core(DEBUG): ntp_receive: peer is 0x65AF5AD8, next action is 1.
Sep 29 04:27:53.546: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    282    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     16    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      4    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    295    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    504    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    283    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     17    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      5    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    296    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    505    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    284    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     18    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      6    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    297    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    506    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    286    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     20    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      8    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    299    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    508    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    287    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     21    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3      9    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    300    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    509    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    288    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     22    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     10    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    301    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    510    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    290    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     24    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     12    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    303    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    512    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    292    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     26    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     14    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    305    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2    514    256   376  1.278  -3.481 12.530
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
Sep 29 04:28:08.545: NTP message sent to 10.0.128.254, from interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:28:08.545: NTP message received from 10.0.128.254 on interface 'FastEthernet0/0' (10.0.130.13).
Sep 29 04:28:08.545: NTP Core(DEBUG): ntp_receive: message received
Sep 29 04:28:08.545: NTP Core(DEBUG): ntp_receive: peer is 0x65AF6228, next action is 1.
Sep 29 04:28:08.545: NTP Core(DEBUG): receive: packet given to process_packet
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    295    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     29    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     17    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    308    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2      2    256   375  1.278  -3.481 14.658
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    299    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     33    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     21    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    312    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2      6    256   375  1.278  -3.481 14.658
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    301    256   376  2.057 -45.591  0.128
 ~10.0.130.2      10.0.128.254     3     35    256   377  2.065 -18.822  2.967
 ~10.0.130.3      10.0.128.254     3     23    256   377  2.121 -20.181  0.106
 ~10.0.130.4      10.0.128.254     3    314    256   376  1.826 -23.892  0.074
*~10.0.128.254    10.84.87.146     2      8    256   375  1.278  -3.481 14.658
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh run | i ntp        
ntp logging
ntp server 10.0.130.1
ntp server 10.0.130.2
ntp server 10.0.130.3
ntp server 10.0.130.4
ntp server 10.0.128.254
R3(config-if)#do sh ntp assoc  

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     25    512   337  2.000 -53.703  0.123
 ~10.0.130.2      10.0.128.254     3     10    512   377  2.476 -18.536  0.144
 ~10.0.130.3      10.0.128.254     3      3    512   377  1.797 -20.467  0.137
 ~10.0.130.4      10.0.128.254     3     35    512   337  1.662 -23.268  0.128
*~10.0.128.254    10.84.87.146     2    241    512   277  1.647  -4.046 12.158
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3     46    512   337  2.000 -53.703  0.123
 ~10.0.130.2      10.0.128.254     3     31    512   377  2.476 -18.536  0.144
 ~10.0.130.3      10.0.128.254     3     24    512   377  1.797 -20.467  0.137
 ~10.0.130.4      10.0.128.254     3     56    512   337  1.662 -23.268  0.128
*~10.0.128.254    10.84.87.146     2    262    512   277  1.647  -4.046 12.158
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
R3(config-if)#
R3(config-if)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~10.0.130.1      10.0.128.254     3    297    512   337  2.000 -53.703  0.123
 ~10.0.130.2      10.0.128.254     3    282    512   377  2.476 -18.536  0.144
 ~10.0.130.3      10.0.128.254     3    275    512   377  1.797 -20.467  0.137
 ~10.0.130.4      10.0.128.254     3    307    512   337  1.662 -23.268  0.128
*~10.0.128.254    10.84.87.146     2      2    512   177  1.292  -3.929  8.001
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured

Misc

Limit NTP client, peer associations
Cisco IOS Basic System Management Command Reference - N through T Commands [Support & Downloads] - Cisco

configure terminal
!
ntp max-associations 3
!
end

Console Log

SW1(config)#do sh ntp assoc                 

  address         ref clock       st   when   poll reach  delay  offset   disp
 ~127.127.1.1     .LOCL.           4     12     16   377  0.000   0.000  0.262
 ~10.0.129.2      10.0.128.254     3      1    128   376  2.475  38.192  0.835
 ~10.0.129.3      10.0.128.254     3      6    128   377  1.834  32.863  0.454
 ~10.0.129.4      10.0.128.254     3      2    128   377  2.925  26.722  0.893
*~10.0.128.254    10.84.87.146     2     31    128   141  1.878  52.586 442.23
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#ntp                             
SW1(config)#ntp max-ass
SW1(config)#ntp max-associations ?
  <0-4294967295>  Number of associations

SW1(config)#ntp max-associations 
.Sep 29 05:24:54.619: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.128.254 3 packets
SW1(config)#ntp max-associations 3
%NTP: Current associations is greater than 3, config rejected
SW1(config)#
.Sep 29 05:25:38.542: NTP Core (NOTICE): Clock is synchronized.
SW1(config)#
Sep 29 05:26:54.621: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.12 45 packets
Sep 29 05:26:54.621: %SEC-6-IPACCESSLOGS: list 2 denied 10.0.128.254 1 packet
SW1(config)#do sh run | i ntp
ntp logging
ntp access-group peer 3
ntp access-group peer 1
ntp access-group serve-only 2
ntp master 5
ntp peer 10.0.129.2
ntp peer 10.0.129.3
ntp peer 10.0.129.4
ntp server 10.0.128.254
SW1(config)#
Sep 29 05:27:54.617: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.13 1 packet
SW1(config)#no ntp peer 10.0.129.2
SW1(config)#no ntp peer 10.0.129.3
SW1(config)#no ntp peer 10.0.129.4
SW1(config)#no ntp server 10.0.128.254
SW1(config)#
Sep 29 05:28:28.735: NTP Core (NOTICE): Clock synchronization lost.
.Sep 29 05:28:29.137: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
.Sep 29 05:28:31.142: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#d
.Sep 29 05:28:33.139: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           4      1     16   377  0.000   0.000  0.247
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#
.Sep 29 05:28:36.545: NTP Core (INFO): synchronized to 127.127.1.1, stratum 4
.Sep 29 05:28:36.545: NTP Core (NOTICE): Clock is synchronized.
SW1(config)#do sh ntp assoc

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           4      2     16   377  0.000   0.000  0.247
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
SW1(config)#ntp max-a
Sep 29 05:28:54.623: %SEC-6-IPACCESSLOGS: list 1 denied 10.0.130.11 45 packets
SW1(config)#ntp max-asso
SW1(config)#ntp max-associations 2
SW1(config)#
Sep 29 05:29:03.833: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:05.838: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:07.835: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:09.831: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:11.836: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:12.515: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:13.832: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:14.520: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:15.837: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:16.517: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:17.834: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:18.522: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:19.830: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:20.518: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:22.137: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:22.515: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:24.142: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:24.520: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:26.139: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:26.516: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:28.143: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:29:28.521: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:30.140: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:32.153: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:34.141: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:29:36.138: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
SW1(config)#
Sep 29 05:30:34.137: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
Sep 29 05:30:34.514: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:30:35.546: NTP Core (INFO): peer 10.0.128.254 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
Sep 29 05:30:36.142: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:30:38.138: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#ntp peer 10.0.129.2
%NTP: Did not configure master clock.  Too many peers(3). Allowed only 2
%NTP: Couldn't configure peer
SW1(config)#ntp peer 10.0.129.3
%NTP: Did not configure master clock.  Too many peers(3). Allowed only 2
%NTP: Couldn't configure peer
SW1(config)#
Sep 29 05:30:40.143: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:30:42.140: NTP Core (NOTICE): ntp_receive: dropping message: AM_NEWPASS, passive association disabled..
SW1(config)#
Sep 29 05:30:46.544: NTP Core (NOTICE): Clock synchronization lost.
.Sep 29 05:30:46.544: NTP Core (INFO): synchronized to 10.0.128.254, stratum 2
.Sep 29 05:30:46.544: NTP Core (NOTICE): Clock is synchronized.
SW1(config)#

References

PG1X LASTHOPE WIKI

Table of Contents

Cisco: Clock

Blueprint

Manual Configuration

Daylight Saving Time(DST, Summer Time)

NTP

Server / Client Configuration

NTP Symmetric Active / Passive Mode

[Incomplete Lab] NTP Broadcast Mode

NTP Broadcast Mode

NTP Multicast Mode

Authentication

ACL

Disable NTP Interface

Misc

References

PG1X LASTHOPE WIKI

User Tools

Site Tools

Table of Contents

Cisco: Clock

Blueprint

Manual Configuration

Daylight Saving Time(DST, Summer Time)

NTP

Server / Client Configuration

NTP Symmetric Active / Passive Mode

[Incomplete Lab] NTP Broadcast Mode

NTP Broadcast Mode

NTP Multicast Mode

Authentication

ACL

Disable NTP Interface

Misc

References

Page Tools