V.35 back to back connection.
R1#sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DCE V.35, clock rate 2000000 idb at 0x66C0F420, driver data structure at 0x66C16C3C wic_info 0x66C17268 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x00030400, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00002003 SDMA Registers: SDC=0x00002201, SDCM=0x00000000, SGC=0x0000C000 CRDP=0x161D1720, CTDP=0x161D1960, FTDB=0x161D1960 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00490013 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543210 GPP Registers: Conf=0x430002 , Io=0x464050 , Data=0x7F57FFAB, Level=0x80004 Conf0=0x430002 , Io0=0x464050 , Data0=0x7F57FFAB, Level0=0x80004 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#int s0/0/0 R1(config-if)#clo R1(config-if)#clock ra R1(config-if)#clock rate ? Speed (bits per second) 1200 2400 4800 9600 14400 19200 28800 32000 38400 48000 56000 57600 64000 72000 115200 125000 128000 148000 192000 250000 256000 320000 384000 500000 512000 640000 704000 768000 800000 1000000 1024000 1200000 1536000 2000000 4000000 8000000 <300-8000000> Choose clockrate from list above R1(config-if)#clock rate 64000 R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 87 bytes ! interface Serial0/0/0 no ip address shutdown no fair-queue clock rate 64000 end R1(config-if)#do sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DCE V.35, clock rate 64000 idb at 0x66C0F420, driver data structure at 0x66C16C3C wic_info 0x66C17268 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x00030400, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00002003 SDMA Registers: SDC=0x00002201, SDCM=0x00000000, SGC=0x0000C000 CRDP=0x161D1720, CTDP=0x161D1960, FTDB=0x161D1960 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00490013 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543210 GPP Registers: Conf=0x430002 , Io=0x464050 , Data=0x7F57FFAB, Level=0x80004 Conf0=0x430002 , Io0=0x464050 , Data0=0x7F57FFAB, Level0=0x80004 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R1(config-if)#do sh int s0/0/0 Serial0/0/0 is administratively down, line protocol is down Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input never, output 00:21:39, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1 packets output, 24 bytes, 0 underruns 0 output errors, 0 collisions, 5 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=down DSR=down DTR=down RTS=down CTS=down R1(config-if)#no shut R1(config-if)#do sh int s0/0/0 Serial0/0/0 is down, line protocol is down Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input never, output 00:22:36, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1 packets output, 24 bytes, 0 underruns 0 output errors, 0 collisions, 6 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions --More-- *Oct 8 01:26:04.455: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to down R1(config-if)#do sh int s0/0/0 Serial0/0/0 is down, line protocol is down Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input never, output 00:22:44, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 0 packets input, 0 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1 packets output, 24 bytes, 0 underruns 0 output errors, 0 collisions, 6 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions R1(config-if)# *Oct 8 01:28:24.755: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up *Oct 8 01:28:25.755: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up R1(config-if)#^Z R1# *Oct 8 01:29:23.783: %SYS-5-CONFIG_I: Configured from console by console R1#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:01, output 00:00:02, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 12 packets input, 1452 bytes, 0 no buffer Received 12 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 11 packets output, 846 bytes, 0 underruns 0 output errors, 0 collisions, 10 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 2 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R1#sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DCE V.35, clock rate 64000 idb at 0x66C0F420, driver data structure at 0x66C16C3C wic_info 0x66C17268 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x000304C0, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00003008 SDMA Registers: SDC=0x00002201, SDCM=0x00000080, SGC=0x0000C000 CRDP=0x161D17F0, CTDP=0x161D1A10, FTDB=0x161D1A10 Main Routing Register=0x0003FFF8 BRG Conf Register=0x0005023F Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543210 GPP Registers: Conf=0x430002 , Io=0x464050 , Data=0x7F4BBFAF, Level=0x80004 Conf0=0x430002 , Io0=0x464050 , Data0=0x7F6BBFAF, Level0=0x80004 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#int s0/0/0 R1(config-if)#bandwi R1(config-if)#bandwidth ? <1-10000000> Bandwidth in kilobits inherit Specify how bandwidth is inherited qos-reference Reference bandwidth for QOS test receive Specify receive-side bandwidth R1(config-if)#bandwidth 64 R1(config-if)#^Z R1# *Oct 8 03:02:29.035: %SYS-5-CONFIG_I: Configured from console by console R1#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial MTU 1500 bytes, BW 64 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 676 packets input, 47652 bytes, 0 no buffer Received 676 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 675 packets output, 47046 bytes, 0 underruns 0 output errors, 0 collisions, 10 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 2 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
R2#sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DTE V.35 clocks stopped. idb at 0x66C23FA0, driver data structure at 0x66C2B7BC wic_info 0x66C2BDE8 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x00030400, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x80000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00002003 SDMA Registers: SDC=0x00002201, SDCM=0x00000000, SGC=0x0000C000 CRDP=0x15BD2C20, CTDP=0x15BD2E60, FTDB=0x15BD2E60 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00480000 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543219 GPP Registers: Conf=0x30002 , Io=0x64050 , Data=0x7F1FFFAF, Level=0x0 Conf0=0x30002 , Io0=0x64050 , Data0=0x7F1FFFAF, Level0=0x0 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#int s0/0/0 R2(config-if)#do sh int s0/0/0 Serial0/0/0 is administratively down, line protocol is down Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:23:53, output never, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 1 packets input, 24 bytes, 0 no buffer Received 1 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 0 packets output, 0 bytes, 0 underruns 0 output errors, 0 collisions, 5 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=down RTS=down CTS=up R2(config-if)#do sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DTE V.35 TX and RX clocks detected. idb at 0x66C23FA0, driver data structure at 0x66C2B7BC wic_info 0x66C2BDE8 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x00030400, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x80000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00002000 SDMA Registers: SDC=0x00002201, SDCM=0x00000000, SGC=0x0000C000 CRDP=0x15BD2C20, CTDP=0x15BD2E60, FTDB=0x15BD2E60 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00480000 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543219 GPP Registers: Conf=0x30002 , Io=0x64050 , Data=0x7F07FFAB, Level=0x0 Conf0=0x30002 , Io0=0x64050 , Data0=0x7F67FFAB, Level0=0x0 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R2(config-if)#no shut R2(config-if)# *Oct 8 01:31:34.947: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up *Oct 8 01:31:35.947: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up R2(config-if)#^Z R2# *Oct 8 01:32:37.283: %SYS-5-CONFIG_I: Configured from console by console R2#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:02, output 00:00:01, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 11 packets input, 846 bytes, 0 no buffer Received 11 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 12 packets output, 1452 bytes, 0 underruns 0 output errors, 0 collisions, 6 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R2#sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DTE V.35 TX and RX clocks detected. idb at 0x66C23FA0, driver data structure at 0x66C2B7BC wic_info 0x66C2BDE8 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x000304C0, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00003008 SDMA Registers: SDC=0x00002201, SDCM=0x00000080, SGC=0x0000C000 CRDP=0x15BD2CD0, CTDP=0x15BD2F30, FTDB=0x15BD2F30 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00480000 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543219 GPP Registers: Conf=0x30002 , Io=0x64050 , Data=0x7F1BBFAB, Level=0x180000 Conf0=0x30002 , Io0=0x64050 , Data0=0x7F7BBFAB, Level0=0x180000 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#int s0/0/0 R2(config-if)#bandwi R2(config-if)#bandwidth ? <1-10000000> Bandwidth in kilobits inherit Specify how bandwidth is inherited qos-reference Reference bandwidth for QOS test receive Specify receive-side bandwidth R2(config-if)#bandwidth 64 R2(config-if)#^Z R2# *Oct 8 03:05:39.263: %SYS-5-CONFIG_I: Configured from console by console R2#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial MTU 1500 bytes, BW 64 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 675 packets input, 47046 bytes, 0 no buffer Received 675 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 676 packets output, 47652 bytes, 0 underruns 0 output errors, 0 collisions, 6 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#int s0/0/0 R1(config-if)#enca R1(config-if)#encapsulation ? bstun Block Serial tunneling (BSTUN) frame-relay Frame Relay networks hdlc Serial HDLC synchronous lapb LAPB (X.25 Level 2) ppp Point-to-Point protocol sdlc SDLC sdlc-primary SDLC (primary) sdlc-secondary SDLC (secondary) smds Switched Megabit Data Service (SMDS) stun Serial tunneling (STUN) x25 X.25 R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 89 bytes ! interface Serial0/0/0 no ip address shutdown no fair-queue clock rate 2000000 end R1(config-if)#enca R1(config-if)#encapsulation hdlc R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 89 bytes ! interface Serial0/0/0 no ip address shutdown no fair-queue clock rate 2000000 end R1(config-if)#no encapsulation hdlc R1(config-if)#do sh run all | i hdlc R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 89 bytes ! interface Serial0/0/0 no ip address shutdown no fair-queue clock rate 2000000 end R1(config-if)#enca R1(config-if)#encapsulation ppp R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 108 bytes ! interface Serial0/0/0 no ip address encapsulation ppp shutdown no fair-queue clock rate 2000000 end R1(config-if)#ppp authentication ? chap Challenge Handshake Authentication Protocol (CHAP) eap Extensible Authentication Protocol (EAP) ms-chap Microsoft Challenge Handshake Authentication Protocol (MS-CHAP) ms-chap-v2 Microsoft CHAP Version 2 (MS-CHAP-V2) pap Password Authentication Protocol (PAP) R1(config-if)#ppp authentication chap R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 133 bytes ! interface Serial0/0/0 no ip address encapsulation ppp shutdown no fair-queue ppp authentication chap clock rate 2000000 end R1(config-if)#ppp multilink ? endpoint Configure the local Endpoint Discriminator fragment Specify fragmentation parameters group Put interface in a multilink bundle mrru Configure multilink MRRU values multiclass Configure support for Multiclass Multilink queue Specify link queuing parameters <cr>
R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)#username R2 password CISCO R1(config)#int s0/0/0 R1(config-if)#ip address 172.16.1.1 255.255.255.252 R1(config-if)#encapsulation pp R1(config-if)#ppp authentication cha R1(config-if)#ppp authentication chap R1(config-if)#no shut R1(config-if)# *Oct 11 22:07:14.795: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up R1(config-if)# *Oct 11 22:07:14.911: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up R1(config-if)#
R2#conf t Enter configuration commands, one per line. End with CNTL/Z. R2(config)#username R1 password CISCO R2(config)#interface Serial 0/0/0 R2(config-if)#ip addr 172.16.1.2 255.255.255.252 R2(config-if)#encapsulation ppp R2(config-if)#ppp authentication chap R2(config-if)#no shut R2(config-if)# *Oct 11 22:10:29.835: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up R2(config-if)# *Oct 11 22:10:29.951: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up
R1(config-if)#do sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial Internet address is 172.16.1.1/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP Open, multilink Closed Open: IPCP, CDPCP, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters 00:05:37 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 58 packets input, 2161 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 60 packets output, 2825 bytes, 0 underruns 0 output errors, 0 collisions, 1 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R1(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 162 bytes ! interface Serial0/0/0 ip address 172.16.1.1 255.255.255.252 encapsulation ppp no fair-queue ppp authentication chap ppp multilink clock rate 2000000 end R1(config-if)#do sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DCE V.35, clock rate 2000000 idb at 0x66C1E3E0, driver data structure at 0x66C25BFC wic_info 0x66C26228 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x000304C0, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00003008 SDMA Registers: SDC=0x00002201, SDCM=0x00000080, SGC=0x0000C000 CRDP=0x161D7A40, CTDP=0x161D82A0, FTDB=0x161D82A0 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00490013 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543210 GPP Registers: Conf=0x430002 , Io=0x464050 , Data=0x7F4BBFAF, Level=0x80004 Conf0=0x430002 , Io0=0x464050 , Data0=0x7F4BBFAF, Level0=0x80004 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns R1(config-if)#do sh run | i username username R2 password 0 CISCO
R2(config-if)#do sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial Internet address is 172.16.1.2/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP Open Open: IPCP, CDPCP, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:06, output 00:00:06, output hang never Last clearing of "show interface" counters 00:04:06 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 60 packets input, 2825 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 58 packets output, 2161 bytes, 0 underruns 0 output errors, 0 collisions, 1 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 1 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R2(config-if)#do sh run int s0/0/0 Building configuration... Current configuration : 127 bytes ! interface Serial0/0/0 ip address 172.16.1.2 255.255.255.252 encapsulation ppp no fair-queue ppp authentication chap end R2(config-if)#do sh controllers s0/0/0 Interface Serial0/0/0 Hardware is GT96K DTE V.35 TX and RX clocks detected. idb at 0x66C345A0, driver data structure at 0x66C3BDBC wic_info 0x66C3C3E8 Physical Port 0, SCC Num 0 MPSC Registers: MMCR_L=0x000304C0, MMCR_H=0x00000000, MPCR=0x00000000 CHR1=0x00FE007E, CHR2=0x00000000, CHR3=0x0000064A, CHR4=0x00000000 CHR5=0x00000000, CHR6=0x00000000, CHR7=0x00000000, CHR8=0x00000000 CHR9=0x00000000, CHR10=0x00003008 SDMA Registers: SDC=0x00002201, SDCM=0x00000080, SGC=0x0000C000 CRDP=0x15BD2CE0, CTDP=0x15BD3500, FTDB=0x15BD3500 Main Routing Register=0x0003FFF8 BRG Conf Register=0x00480000 Rx Clk Routing Register=0x76543218 Tx Clk Routing Register=0x76543219 GPP Registers: Conf=0x30002 , Io=0x64050 , Data=0x7F7BBFAB, Level=0x180000 Conf0=0x30002 , Io0=0x64050 , Data0=0x7F1BBFAB, Level0=0x180000 0 input aborts on receiving flag sequence 0 throttles, 0 enables 0 overruns 0 transmitter underruns R2(config-if)#do sh run | i username username R1 password 0 CISCO
R1(config-if)#do ping 172.16.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
Let's say wrong password.
R1(config)#username R2 password CCIE R1(config)#do sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial Internet address is 172.16.1.1/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP Open, multilink Closed Open: IPCP, CDPCP, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:12:22 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 152 packets input, 6261 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 154 packets output, 6925 bytes, 0 underruns 0 output errors, 0 collisions, 1 interface resets 0 unknown protocol drops R1(config)#ping 172.16.1.2 ^ % Invalid input detected at '^' marker. R1(config)#do ping 172.16.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R1(config)#int s0/0/0 R1(config-if)#shut R1(config-if)# *Oct 11 22:18:32.223: %LINK-5-CHANGED: Interface Serial0/0/0, changed state to administratively down *Oct 11 22:18:32.227: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)#no shut R1(config-if)#no shut *Oct 11 22:18:37.247: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up R1(config-if)#do ping 172.16.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1(config-if)# *Oct 11 22:19:02.579: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:19:02.587: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)# *Oct 11 22:19:16.755: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:19:16.763: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)# *Oct 11 22:19:24.851: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:19:24.859: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)#no shut *Oct 11 22:19:32.947: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:19:32.955: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)#do ping 172.16.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) R1(config-if)# *Oct 11 22:19:47.123: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:19:47.131: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1(config-if)#
R1(config-if)#do sh int s0/0/0 Serial0/0/0 is up, line protocol is down Hardware is GT96K Serial Internet address is 172.16.1.1/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP REQsent, multilink Closed, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:02, output 00:00:00, output hang never Last clearing of "show interface" counters 00:15:02 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 398 packets input, 11926 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 412 packets output, 13404 bytes, 0 underruns 0 output errors, 0 collisions, 33 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 67 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up
Line protocol down
e R1#debu R1#debug pp *Oct 11 22:21:44.787: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:21:44.795: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R1#debug ppp auth R1#debug ppp authe R1#debug ppp authentication PPP authentication debugging is on R1# *Oct 11 22:21:56.959: Se0/0/0 PPP: Using default call direction *Oct 11 22:21:56.959: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:21:56.959: Se0/0/0 PPP: Session handle[B900003E] Session id[62] *Oct 11 22:21:56.983: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:21:56.991: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:21:56.991: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:21:56.991: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:21:56.995: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:21:56.995: Se0/0/0 CHAP: Using hostname from configured hostname R1# *Oct 11 22:21:56.995: Se0/0/0 CHAP: Using password from AAA *Oct 11 22:21:56.995: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:21:56.995: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:21:56.999: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:21:56.999: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R1# *Oct 11 22:21:59.003: Se0/0/0 PPP: Using default call direction *Oct 11 22:21:59.003: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:21:59.003: Se0/0/0 PPP: Session handle[CD00003F] Session id[63] R1# *Oct 11 22:22:01.047: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:22:01.047: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:22:01.047: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:22:01.047: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:22:01.047: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:22:01.047: Se0/0/0 CHAP: Using password from AAA *Oct 11 22:22:01.047: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:22:01.051: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:22:01.051: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:22:01.051: Se0/0/0 PPP: Received LOGIN Response FAIL R1# *Oct 11 22:22:01.055: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R1# *Oct 11 22:22:03.059: Se0/0/0 PPP: Using default call direction *Oct 11 22:22:03.059: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:22:03.059: Se0/0/0 PPP: Session handle[C3000040] Session id[64] *Oct 11 22:22:03.095: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:22:03.095: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:22:03.095: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:22:03.095: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:22:03.095: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:22:03.095: Se0/0/0 CHAP: Using password from AAA R1# *Oct 11 22:22:03.095: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:22:03.099: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:22:03.099: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:22:03.099: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:22:03.103: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed"
R2(config-if)#^Z R2#debug ppp authentication PPP authentication debugging is on R2# *Oct 11 22:25:13.379: %SYS-5-CONFIG_I: Configured from console by console *Oct 11 22:25:13.999: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up *Oct 11 22:25:14.055: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down R2# *Oct 11 22:25:16.055: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:16.055: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:16.055: Se0/0/0 PPP: Session handle[AB00003F] Session id[63] *Oct 11 22:25:16.067: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:16.091: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:16.091: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:16.091: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:16.091: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:16.091: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:16.091: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:16.091: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:16.095: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:16.095: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:16.095: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:18.099: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:18.099: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:18.099: Se0/0/0 PPP: Session handle[11000040] Session id[64] *Oct 11 22:25:18.115: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:18.139: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:18.139: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:18.139: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:18.139: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:18.139: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:18.139: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:18.139: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:18.143: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:18.143: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:18.143: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:20.147: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:20.147: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:20.147: Se0/0/0 PPP: Session handle[A9000041] Session id[65] *Oct 11 22:25:20.163: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:20.187: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:20.187: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:20.187: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:20.187: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:20.187: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:20.187: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:20.187: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:20.191: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:20.191: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:20.191: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:22.195: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:22.195: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:22.195: Se0/0/0 PPP: Session handle[7E000042] Session id[66] *Oct 11 22:25:22.211: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:22.235: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:22.235: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:22.235: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:22.235: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:22.235: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:22.235: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:22.235: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:22.239: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:22.239: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:22.239: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:24.243: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:24.243: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:24.243: Se0/0/0 PPP: Session handle[97000043] Session id[67] *Oct 11 22:25:24.259: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:24.283: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:24.283: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:24.283: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:24.283: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:24.283: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:24.283: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:24.283: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:24.287: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:24.287: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:24.287: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:26.291: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:26.291: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:26.291: Se0/0/0 PPP: Session handle[3D000044] Session id[68] *Oct 11 22:25:26.307: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:26.331: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:26.331: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:26.331: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:26.331: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:26.331: Se0/0/0 CHAP: Using password from AAA R2# *Oct 11 22:25:26.331: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:25:26.331: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:25:26.335: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:25:26.335: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:25:26.335: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2# *Oct 11 22:25:28.339: Se0/0/0 PPP: Using default call direction *Oct 11 22:25:28.339: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:25:28.339: Se0/0/0 PPP: Session handle[D6000045] Session id[69] *Oct 11 22:25:28.355: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:25:28.379: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:25:28.379: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:25:28.379: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:25:28.379: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:25:28.379: Se0/0/0 CHAP: Using password from AAA R2#
R1#sh run | i username username R2 password 0 CCIE
Let's fix wrong password.
R1(config)#username R2 password C *Oct 11 22:26:35.359: Se0/0/0 PPP: Using default call direction *Oct 11 22:26:35.359: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:26:35.359: Se0/0/0 PPP: Session handle[1E0000A4] Session id[164] *Oct 11 22:26:35.383: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:26:35.391: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:26:35.391: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:26:35.391: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:26:35.391: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:26:35.391: Se0/0/0 CHAP: Using password from AAA R1(config)#username R2 password *Oct 11 22:26:35.391: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:26:35.395: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:26:35.395: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:26:35.395: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:26:35.395: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R1(config)#username R2 password *Oct 11 22:26:37.403: Se0/0/0 PPP: Using default call direction *Oct 11 22:26:37.407: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:26:37.407: Se0/0/0 PPP: Session handle[570000A5] Session id[165] *Oct 11 22:26:37.431: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:26:37.439: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:26:37.439: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:26:37.439: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:26:37.439: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:26:37.439: Se0/0/0 CHAP: Using password from AAA R1(config)#username R2 password CISC *Oct 11 22:26:37.439: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:26:37.439: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:26:37.443: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:26:37.443: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:26:37.443: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R1(config)#username R2 password CISCO R1(config)# *Oct 11 22:26:39.455: Se0/0/0 PPP: Using default call direction *Oct 11 22:26:39.455: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:26:39.455: Se0/0/0 PPP: Session handle[5B0000A6] Session id[166] *Oct 11 22:26:39.479: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R1" *Oct 11 22:26:39.487: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R2" *Oct 11 22:26:39.487: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:26:39.487: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:26:39.487: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:26:39.487: Se0/0/0 CHAP: Using password from AAA *Oct 11 22:26:39.487: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R1" *Oct 11 22:26:39.491: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R2" *Oct 11 22:26:39.491: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:26:39.491: Se0/0/0 PPP: Received LOGIN Response PASS *Oct 11 22:26:39.499: Se0/0/0 CHAP: O SUCCESS id 1 len 4 *Oct 11 22:26:39.499: Se0/0/0 CHAP: I SUCCESS id 1 len 4 R1(config)# *Oct 11 22:26:39.503: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up R1(config)#^Z R1#ping *Oct 11 22:28:01.055: %SYS-5-CONFIG_I: Configured from console by console R1#ping 172.16.1.2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms R1#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial Internet address is 172.16.1.1/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP Open, multilink Closed Open: IPCP, CDPCP, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:03, output 00:00:03, output hang never Last clearing of "show interface" counters 00:22:48 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 1439 packets input, 33801 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1461 packets output, 37288 bytes, 0 underruns 0 output errors, 0 collisions, 165 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 316 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R1#u all All possible debugging has been turned off R1#
R2(config)# *Oct 11 22:29:48.387: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:29:48.391: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:29:48.391: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:29:48.391: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:29:48.395: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2(config)# *Oct 11 22:29:50.399: Se0/0/0 PPP: Using default call direction *Oct 11 22:29:50.399: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:29:50.399: Se0/0/0 PPP: Session handle[BF0000A4] Session id[164] *Oct 11 22:29:50.435: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:29:50.435: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:29:50.435: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:29:50.435: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:29:50.435: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:29:50.435: Se0/0/0 CHAP: Using password from AAA R2(config)# *Oct 11 22:29:50.435: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:29:50.439: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:29:50.439: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:29:50.439: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:29:50.443: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2(config)# *Oct 11 22:29:52.455: Se0/0/0 PPP: Using default call direction *Oct 11 22:29:52.455: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:29:52.455: Se0/0/0 PPP: Session handle[3B0000A5] Session id[165] *Oct 11 22:29:52.483: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:29:52.483: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:29:52.483: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:29:52.483: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:29:52.483: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:29:52.483: Se0/0/0 CHAP: Using password from AAA R2(config)# *Oct 11 22:29:52.483: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:29:52.487: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:29:52.487: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:29:52.487: Se0/0/0 PPP: Received LOGIN Response FAIL *Oct 11 22:29:52.491: Se0/0/0 CHAP: O FAILURE id 1 len 25 msg is "Authentication failed" R2(config)# *Oct 11 22:29:54.495: Se0/0/0 PPP: Using default call direction *Oct 11 22:29:54.495: Se0/0/0 PPP: Treating connection as a dedicated line *Oct 11 22:29:54.495: Se0/0/0 PPP: Session handle[260000A6] Session id[166] *Oct 11 22:29:54.531: Se0/0/0 CHAP: O CHALLENGE id 1 len 23 from "R2" *Oct 11 22:29:54.531: Se0/0/0 CHAP: I CHALLENGE id 1 len 23 from "R1" *Oct 11 22:29:54.531: Se0/0/0 PPP: Sent CHAP SENDAUTH Request *Oct 11 22:29:54.531: Se0/0/0 PPP: Received SENDAUTH Response PASS *Oct 11 22:29:54.531: Se0/0/0 CHAP: Using hostname from configured hostname *Oct 11 22:29:54.531: Se0/0/0 CHAP: Using password from AAA *Oct 11 22:29:54.531: Se0/0/0 CHAP: O RESPONSE id 1 len 23 from "R2" *Oct 11 22:29:54.535: Se0/0/0 CHAP: I RESPONSE id 1 len 23 from "R1" *Oct 11 22:29:54.535: Se0/0/0 PPP: Sent CHAP LOGIN Request *Oct 11 22:29:54.535: Se0/0/0 PPP: Received LOGIN Response PASS *Oct 11 22:29:54.543: Se0/0/0 CHAP: O SUCCESS id 1 len 4 *Oct 11 22:29:54.543: Se0/0/0 CHAP: I SUCCESS id 1 len 4 R2(config)# *Oct 11 22:29:54.547: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to up R2(config)#^Z R2#ping 172.16.1. *Oct 11 22:31:37.775: %SYS-5-CONFIG_I: Configured from console by console R2#ping 172.16.1.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms R2#sh int s0/0/0 Serial0/0/0 is up, line protocol is up Hardware is GT96K Serial Internet address is 172.16.1.2/30 MTU 1500 bytes, BW 1544 Kbit/sec, DLY 20000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation PPP, LCP Open Open: IPCP, CDPCP, loopback not set Keepalive set (10 sec) CRC checking enabled Last input 00:00:02, output 00:00:02, output hang never Last clearing of "show interface" counters 00:21:37 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: fifo Output queue: 0/40 (size/max) 5 minute input rate 1000 bits/sec, 1 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 1471 packets input, 38196 bytes, 0 no buffer Received 0 broadcasts (0 IP multicasts) 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 1451 packets output, 34747 bytes, 0 underruns 0 output errors, 0 collisions, 170 interface resets 0 unknown protocol drops 0 output buffer failures, 0 output buffers swapped out 295 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up R2#undebu R2#undebug all All possible debugging has been turned off R2#
Noisy debug message finished and Line protocol is up, additionally ping successful.