Troubleshooting lab : R1 is the only ASBR and it has a static route :ipv6 route 4::/64 fastEthernet 0/0 and redistributes it into ospf, -R1 is running OSPFv3 only with R2 and R3. -R1 and R3 are configured in area 1 NSSA -R2 and R3 are configured in area 0 Lets enable OSPF in fa0/0 of R1: R1(config-rtr)#int fa0/0 R1(config-if)#ipv6 ospf 1 area 1 R2 receives an LSA Type 5 from R3 the ABR with the Forward Address set to 124::4: R2#show ipv ospf data ext | inc Advertising Router|Forward Address Advertising Router: 3.3.3.3 Forward Address: 124::4 R2 now does not install the external route: R2#show ipv route 4::/64 % Route not found R2# I will add another ipv6 address in fa0/0 of R1: R1(config-rtr)#int fa0/0 R1(config-if)#ipv6 address 123::1/64 The FA is now 123::1: R2#show ipv ospf data ext | inc Advertising Router|Forward Address Advertising Router: 3.3.3.3 Forward Address: 123::1 Now the external is installed in R2: R2(config)#do show ipv route 4::/64 Routing entry for 4::/64 Known via ospf 1, distance 110, metric 20, type extern 2 Route count is 1/1, share count 0 Routing paths: FE80::C802:31FF:FE40:8, FastEthernet0/1 Last updated 00:00:40 ago R2 has an inter-area to reach the FA 123::1: R2(config)#do show ipv route 123::1 Routing entry for 123::/64 Known via ospf 1, distance 110, metric 3, type inter area Route count is 1/1, share count 0 Routing paths: FE80::C802:31FF:FE40:8, FastEthernet0/1 Last updated 00:01:00 ago But the ping from R2 toward the external prefix 4::4 fails: R2(config)#do ping 4::4 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 4::4, timeout is 2 seconds: ..... Success rate is 0 percent (0/5) Even if R2 reach successfully the FA: R2(config)#do ping 123::1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 123::1, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 72/86/100 ms R2(config)# My problem is: how to troubleshoot the connectivity?
Posted on: Sat, 13 Sep 2014 13:50:21 +0000
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