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Table of Contents
Cisco: OSPF Stub Area, Totally Stub Area
Lab 1: 618d7c21-b99a-4aef-ab54-5d1f958572bb
Topology
Base Configuration
Million common configuration is here.
enable configure terminal ! no ip domain-lookup line console 0 no login exec-timeout 0 0 logging synchronous privilege level 15 exit line vty 0 15 no login privilege level 15 exit ! hostname R
- R1
configure terminal ! interface GigabitEthernet 0/1 ip address 192.168.1.1 255.255.255.0 no shutdown interface GigabitEthernet 0/2 ip address 192.168.2.1 255.255.255.0 no shutdown ! router eigrp N-EIGRP address-family ipv4 unicast autonomous-system 1 router-id 1.1.1.1 network 192.168.1.1 0.0.0.0 network 192.168.2.1 0.0.0.0 exit-address-family exit ! end
- R2
configure terminal ! interface GigabitEthernet 0/1 ip address 192.168.2.2 255.255.255.0 no shutdown interface GigabitEthernet 0/2 ip address 10.0.3.2 255.255.255.0 no shutdown ! router eigrp N-EIGRP address-family ipv4 unicast autonomous-system 1 network 192.168.2.2 0.0.0.0 topology base ! redistribute from ospf to eigrp ! bandwidth[kbps], delay[10us], reliability 100%, load 1, MTU 1500 redistribute ospf 1 metric 1000000 1 255 1 1500 exit-af-topology exit-address-family exit ! router ospf 1 router-id 2.2.2.2 network 10.0.3.2 0.0.0.0 area 0 exit ! end
- R3
configure terminal ! interface GigabitEthernet 0/1 ip address 10.0.3.3 255.255.255.0 no shutdown interface GigabitEthernet 0/2 ip address 10.10.4.3 255.255.255.0 no shutdown ! router ospf 1 router-id 3.3.3.3 network 10.0.3.3 0.0.0.0 area 0 network 10.10.4.3 0.0.0.0 area 10 exit ! end
- R4
configure terminal ! interface GigabitEthernet 0/1 ip address 10.10.4.4 255.255.255.0 no shutdown interface GigabitEthernet 0/2 ip address 10.10.5.4 255.255.255.0 no shutdown ! router ospf 1 router-id 4.4.4.4 network 10.10.4.4 0.0.0.0 area 10 network 10.10.5.4 0.0.0.0 area 10 exit ! end
618d7c21-ospf-stub-initial-state-r2-ge0-2.pcapng618d7c21-ospf-stub-initial-state-r3-ge0-2.pcapng
Standard Area Verification 7cbbd0a8-53f0-4bed-b16f-6da4c2964b89
- show routing table for OSPF
show ip route ospf
- show OSPF process summary
show ip protocols | section ospf
- show LSA Database Sumary
show ip ospf database
- Wireshark Display Filter Expression
ospf && !ospf.hello ospf && ospf.lsa.summary ospf && ospf.lsa.asbr ospf && ospf.lsa.asext
- R2
R2#sh ip ospf database topology
OSPF Router with ID (2.2.2.2) (Process ID 1)
Base Topology (MTID 0)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 1485 0x80000006 0x00807C 1
3.3.3.3 3.3.3.3 807 0x80000007 0x003DB6 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 807 0x80000003 0x004ABD
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 807 0x80000003 0x000E08
10.10.5.0 3.3.3.3 807 0x80000003 0x000D07
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 1485 0x80000002 0x00EC40 0
192.168.2.0 2.2.2.2 1485 0x80000002 0x00E14A 0
R2#sh ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 1492 0x80000006 0x00807C 1
3.3.3.3 3.3.3.3 815 0x80000007 0x003DB6 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 815 0x80000003 0x004ABD
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 815 0x80000003 0x000E08
10.10.5.0 3.3.3.3 815 0x80000003 0x000D07
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 1492 0x80000002 0x00EC40 0
192.168.2.0 2.2.2.2 1492 0x80000002 0x00E14A 0
R2#
- R3
R3#sh ip ospf database
OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 1641 0x80000006 0x00807C 1
3.3.3.3 3.3.3.3 962 0x80000007 0x003DB6 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 962 0x80000003 0x004ABD
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 962 0x80000003 0x000E08
10.10.5.0 3.3.3.3 962 0x80000003 0x000D07
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 962 0x80000006 0x0028B5 1
4.4.4.4 4.4.4.4 934 0x80000006 0x00CEDC 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 934 0x80000003 0x00F2FC
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.0.3.0 3.3.3.3 962 0x80000003 0x00918F
Summary ASB Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 1721 0x80000002 0x00CC59
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 1641 0x80000002 0x00EC40 0
192.168.2.0 2.2.2.2 1641 0x80000002 0x00E14A 0
R3#
- R4
R4#sh ip ospf database
OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 971 0x80000006 0x0028B5 1
4.4.4.4 4.4.4.4 941 0x80000006 0x00CEDC 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 941 0x80000003 0x00F2FC
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.0.3.0 3.3.3.3 971 0x80000003 0x00918F
Summary ASB Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
2.2.2.2 3.3.3.3 1730 0x80000002 0x00CC59
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 1650 0x80000002 0x00EC40 0
192.168.2.0 2.2.2.2 1650 0x80000002 0x00E14A 0
Stub Area w/o route redisribution Configuration
- R3, R4
configure terminal ! router ospf 1 area 10 stub exit ! end
Stub Area w/o route redisribution Verification 44d7c690-95ca-48ea-bcc2-4fd526fa2c73
This timing, There is no route redistribution.
618d7c21-44d7c690-standard-area-r2-ge0-2.pcapng618d7c21-44d7c690-standard-area-r3-ge0-2.pcapng
- R2
R2#sh ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 561 0x80000004 0x007E82 1
3.3.3.3 3.3.3.3 556 0x80000004 0x0043B3 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 570 0x80000001 0x004EBB
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 606 0x80000001 0x001206
10.10.5.0 3.3.3.3 556 0x80000001 0x001105
R2#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O IA 10.10.4.0/24 [110/2] via 10.0.3.3, 00:09:31, GigabitEthernet0/2
O IA 10.10.5.0/24 [110/3] via 10.0.3.3, 00:09:21, GigabitEthernet0/2
R2#
- R3
R3#sh ip ospf database
OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 579 0x80000004 0x007E82 1
3.3.3.3 3.3.3.3 572 0x80000004 0x0043B3 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 586 0x80000001 0x004EBB
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 622 0x80000001 0x001206
10.10.5.0 3.3.3.3 571 0x80000001 0x001105
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 301 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 303 0x80000007 0x00EAC1 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 311 0x80000003 0x0011E0
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 316 0x80000001 0x0057DA
10.0.3.0 3.3.3.3 316 0x80000002 0x00B172
R3#
- R4
R4#sh ip ospf database
OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 315 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 316 0x80000007 0x00EAC1 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 323 0x80000003 0x0011E0
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 330 0x80000001 0x0057DA
10.0.3.0 3.3.3.3 330 0x80000002 0x00B172
R4#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is 10.10.4.3 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.10.4.3, 00:05:33, GigabitEthernet0/1
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O IA 10.0.3.0/24 [110/2] via 10.10.4.3, 00:05:43, GigabitEthernet0/1
R4#
R4#ping 10.0.3.2.2
% Unrecognized host or address, or protocol not running.
R4#ping 10.0.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/5/7 ms
R4#ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
U.U.
Success rate is 0 percent (0/4)
R4#
Stub Area w/ route redisribution Configuration
- R3, R4
configure terminal ! router ospf 1 area 10 stub exit ! end
- R2
configure terminal ! router ospf 1 ! redistribute from eigrp to ospf redistribute eigrp 1 exit ! end
Stub Area w/ route redisribution Verification bcd9f7cd-cd93-4c3a-a8e2-b652d8c8b925
- show OSPF process summary
show ip protocols | section ospf
- show LSA Database Sumary
show ip ospf database
- Wireshark Display Filter Expression
ospf && !ospf.hello ospf && ospf.lsa.summary ospf && ospf.lsa.asbr ospf && ospf.lsa.asext
- R1
R1#sh ip ro eigrp
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 3 subnets
D EX 10.0.3.0 [170/15360] via 192.168.2.2, 00:24:05, GigabitEthernet0/2
D EX 10.10.4.0 [170/15360] via 192.168.2.2, 00:23:12, GigabitEthernet0/2
D EX 10.10.5.0 [170/15360] via 192.168.2.2, 00:23:02, GigabitEthernet0/2
R1#ping 10.10.5.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.5.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/6/10 ms
R1#
- R2
R2#sh ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 94 0x80000005 0x00827B 1
3.3.3.3 3.3.3.3 1356 0x80000004 0x0043B3 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 1370 0x80000001 0x004EBB
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 1406 0x80000001 0x001206
10.10.5.0 3.3.3.3 1356 0x80000001 0x001105
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 94 0x80000001 0x00EE3F 0
192.168.2.0 2.2.2.2 94 0x80000001 0x00E349 0
R2#sh ip ro ospf
*Jan 4 02:37:57.579: %PNP-6-PNP_DISCOVERY_STOPPED: PnP Discovery stopped (Config Wizard)
R2#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O IA 10.10.4.0/24 [110/2] via 10.0.3.3, 00:24:19, GigabitEthernet0/2
O IA 10.10.5.0/24 [110/3] via 10.0.3.3, 00:24:09, GigabitEthernet0/2
R2#ping 10.10.5.4
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.5.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/5 ms
R2#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O IA 10.10.4.0/24 [110/2] via 10.0.3.3, 00:26:36, GigabitEthernet0/2
O IA 10.10.5.0/24 [110/3] via 10.0.3.3, 00:26:26, GigabitEthernet0/2
R2#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/5 ms
R2#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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.0.3.0/24 is directly connected, GigabitEthernet0/2
L 10.0.3.2/32 is directly connected, GigabitEthernet0/2
O IA 10.10.4.0/24 [110/2] via 10.0.3.3, 00:27:14, GigabitEthernet0/2
O IA 10.10.5.0/24 [110/3] via 10.0.3.3, 00:27:04, GigabitEthernet0/2
D 192.168.1.0/24 [90/15360] via 192.168.2.1, 00:28:04, GigabitEthernet0/1
192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.2.0/24 is directly connected, GigabitEthernet0/1
L 192.168.2.2/32 is directly connected, GigabitEthernet0/1
R2#
- R3
R3#sh ip ospf database
OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 219 0x80000005 0x00827B 1
3.3.3.3 3.3.3.3 1479 0x80000004 0x0043B3 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 1494 0x80000001 0x004EBB
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 1530 0x80000001 0x001206
10.10.5.0 3.3.3.3 1479 0x80000001 0x001105
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 1208 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 1211 0x80000007 0x00EAC1 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 1219 0x80000003 0x0011E0
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 1224 0x80000001 0x0057DA
10.0.3.0 3.3.3.3 1224 0x80000002 0x00B172
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 219 0x80000001 0x00EE3F 0
192.168.2.0 2.2.2.2 219 0x80000001 0x00E349 0
R3#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O 10.10.5.0/24 [110/2] via 10.10.4.4, 00:21:23, GigabitEthernet0/2
O E2 192.168.1.0/24 [110/20] via 10.0.3.2, 00:04:32, GigabitEthernet0/1
O E2 192.168.2.0/24 [110/20] via 10.0.3.2, 00:04:32, GigabitEthernet0/1
R3#
- R4
R4#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/5/8 ms
R4#ping 192.168.2.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.2.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 5/5/7 ms
R4#ping 10.0.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/5/9 ms
R4#sh ip ospf data
R4#sh ip ospf database
OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 1278 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 1278 0x80000007 0x00EAC1 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 1286 0x80000003 0x0011E0
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 1293 0x80000001 0x0057DA
10.0.3.0 3.3.3.3 1293 0x80000002 0x00B172
R4#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is 10.10.4.3 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.10.4.3, 00:21:30, GigabitEthernet0/1
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O IA 10.0.3.0/24 [110/2] via 10.10.4.3, 00:21:40, GigabitEthernet0/1
R4#
Totally Stub Area Configuration bb4640f8-9201-4c70-97cc-64a6a12d3809
- R3 (ABR only)
configure terminal ! router ospf 1 area 10 stub no-summary exit ! end
- R3, R4 (All Stub Router Configuraion Needed)
configure terminal ! router ospf 1 area 10 stub exit ! end
- R2
configure terminal ! router ospf 1 ! redistribute from eigrp to ospf redistribute eigrp 1 exit ! end
Totally Stub Area Verification
618d7c21-bb4640f8-standard-area-r2-ge0-2.pcapng618d7c21-bb4640f8-standard-area-r3-ge0-2.pcapng- show routing table for OSPF
show ip route ospf
- show OSPF process summary
show ip protocols | section ospf
- show LSA Database Sumary
show ip ospf database
- Wireshark Display Filter Expression
ospf && !ospf.hello ospf && ospf.lsa.summary ospf && ospf.lsa.asbr ospf && ospf.lsa.asext
- R1
R1#sh ip ro eigrp
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/24 is subnetted, 3 subnets
D EX 10.0.3.0 [170/15360] via 192.168.2.2, 00:39:47, GigabitEthernet0/2
D EX 10.10.4.0 [170/15360] via 192.168.2.2, 00:38:54, GigabitEthernet0/2
D EX 10.10.5.0 [170/15360] via 192.168.2.2, 00:38:44, GigabitEthernet0/2
R1#
- R2
R2#sh ip ospf database
OSPF Router with ID (2.2.2.2) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 905 0x80000005 0x00827B 1
3.3.3.3 3.3.3.3 236 0x80000005 0x0041B4 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 236 0x80000002 0x004CBC
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 236 0x80000002 0x001007
10.10.5.0 3.3.3.3 236 0x80000002 0x000F06
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 905 0x80000001 0x00EE3F 0
192.168.2.0 2.2.2.2 905 0x80000001 0x00E349 0
R2#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O IA 10.10.4.0/24 [110/2] via 10.0.3.3, 00:37:17, GigabitEthernet0/2
O IA 10.10.5.0/24 [110/3] via 10.0.3.3, 00:37:07, GigabitEthernet0/2
R2#
- R3
R3#sh ip ospf database
OSPF Router with ID (3.3.3.3) (Process ID 1)
Router Link States (Area 0)
Link ID ADV Router Age Seq# Checksum Link count
2.2.2.2 2.2.2.2 914 0x80000005 0x00827B 1
3.3.3.3 3.3.3.3 242 0x80000005 0x0041B4 1
Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.0.3.3 3.3.3.3 242 0x80000002 0x004CBC
Summary Net Link States (Area 0)
Link ID ADV Router Age Seq# Checksum
10.10.4.0 3.3.3.3 242 0x80000002 0x001007
10.10.5.0 3.3.3.3 242 0x80000002 0x000F06
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 1903 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 5 0x80000008 0x00E8C2 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 5 0x80000004 0x000FE1
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 41 0x80000003 0x0053DC
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
192.168.1.0 2.2.2.2 913 0x80000001 0x00EE3F 0
192.168.2.0 2.2.2.2 913 0x80000001 0x00E349 0
R3#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O 10.10.5.0/24 [110/2] via 10.10.4.4, 00:02:12, GigabitEthernet0/2
O E2 192.168.1.0/24 [110/20] via 10.0.3.2, 00:02:12, GigabitEthernet0/1
O E2 192.168.2.0/24 [110/20] via 10.0.3.2, 00:02:12, GigabitEthernet0/1
R3#sh ip proo
R3#sh ip proto
R3#sh ip protocols | sec
R3#sh ip protocols | section ospf
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 3.3.3.3
It is an area border router
Number of areas in this router is 2. 1 normal 1 stub 0 nssa
Maximum path: 4
Routing for Networks:
10.0.3.3 0.0.0.0 area 0
10.10.4.3 0.0.0.0 area 10
Routing Information Sources:
Gateway Distance Last Update
2.2.2.2 110 00:02:22
4.4.4.4 110 00:02:22
4.4.4.4 110 00:02:22
Distance: (default is 110)
R3#
- R4
R4#sh ip ospf database
OSPF Router with ID (4.4.4.4) (Process ID 1)
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
3.3.3.3 3.3.3.3 1910 0x80000007 0x00449A 1
4.4.4.4 4.4.4.4 10 0x80000008 0x00E8C2 2
Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
10.10.4.4 4.4.4.4 10 0x80000004 0x000FE1
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
0.0.0.0 3.3.3.3 48 0x80000003 0x0053DC
R4#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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is 10.10.4.3 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.10.4.3, 00:01:51, GigabitEthernet0/1
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.10.4.0/24 is directly connected, GigabitEthernet0/1
L 10.10.4.4/32 is directly connected, GigabitEthernet0/1
C 10.10.5.0/24 is directly connected, GigabitEthernet0/2
L 10.10.5.4/32 is directly connected, GigabitEthernet0/2
R4#sh ip ro ospf
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
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is 10.10.4.3 to network 0.0.0.0
O*IA 0.0.0.0/0 [110/2] via 10.10.4.3, 00:01:56, GigabitEthernet0/1
R4#ping 192.168.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/4/6 ms
R4#ping 10.0.3.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.0.3.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 3/3/4 ms
R4#sh ip ospf pro
R4#sh ip pro
R4#sh ip protocols | sec
R4#sh ip protocols | section ospf
Routing Protocol is "ospf 1"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Router ID 4.4.4.4
Number of areas in this router is 1. 0 normal 1 stub 0 nssa
Maximum path: 4
Routing for Networks:
10.10.4.4 0.0.0.0 area 10
10.10.5.4 0.0.0.0 area 10
Routing Information Sources:
Gateway Distance Last Update
3.3.3.3 110 00:04:36
3.3.3.3 110 00:04:36
Distance: (default is 110)
R4#
References
tech/network/cisco/ospf/stub/stub.txt · Last modified: 2020/01/04 15:34 by wnoguchi
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