Verifying OSPFv3
Note the information in Table 10.8.
I’ll start as usual with the show ipv6 route command:
R3#sh ipv6 route
IPv6 Routing Table - 7 entries
TABLE 1 0 . 8 Verifying IPv6 OSPF
Command Meaning
show ipv6 route Displays the IPv6 routing table on the router
show ipv6 protocols Displays minimal routing protocol information
show ipv6 ospf neighbor Displays the OSPF “neighborship” table
debug ipv6 ospf packet Displays the events that occur if an update takes place
debug ipv6 ospf hello Displays the updates between neighbor routers
O 2001:DB8:3C4D:11::/64 [110/65]
via FE80::21A:2FFF:FE55:C9E8, Serial0/0/1
O 2001:DB8:3C4D:13::/64 [110/128]
via FE80::21A:2FFF:FE55:C9E8, Serial0/0/1
O 2001:DB8:3C4D:14::/64 [110/128]
via FE80::21A:2FFF:FE55:C9E8, Serial0/0/1
C 2001:DB8:3C4D:15::/64 [0/0]
via ::, Serial0/0/1
L 2001:DB8:3C4D:15:21A:6DFF:FE37:A44E/128 [0/0]
via ::, Serial0/0/1
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0
R3#
Perfect. I see all the subnets (except 12, which is down because of that bad interface). Let’s
take a look at the show ipv6 protocols command:
R3#sh ipv6 protocols
IPv6 Routing Protocol is "connected"
IPv6 Routing Protocol is "static"
IPv6 Routing Protocol is "rip 1"
Interfaces:
Serial0/0/1
Redistribution:
None
IPv6 Routing Protocol is "ospf 1"
Interfaces (Area 0):
Serial0/0/1
Redistribution:
None
For the next command, I want to go back to the Corp router so can I see more connections:
show ipv6 ospf neighbor:
Corp#sh ipv6 ospf neighbor
Neighbor ID Pri State Dead Time Interface ID Interface
172.16.10.4 1 FULL/ - 00:00:36 6 Serial0/2/0
172.16.10.3 1 FULL/ - 00:00:33 16 Serial0/1/0
172.16.10.2 1 FULL/ - 00:00:30 6 Serial0/0/1
Corp#
Wait! I need to do the debugging commands. I’ll use two of them: debug ipv6 ospf
packet and debug ipv6 ospf hello (almost the same commands I used with IPv4):
Corp#debug ipv6 ospf packet
OSPFv3 packet debugging is on
Corp#
*May 24 19:38:12.283: OSPFv3: rcv. v:3 t:1 l:40 rid:172.16.10.3
aid:0.0.0.0 chk:E1D2 inst:0 from Serial0/1/0
Corp#
*May 24 19:38:15.103: OSPFv3: rcv. v:3 t:1 l:40 rid:172.16.10.4
aid:0.0.0.0 chk:7EBB inst:0 from Serial0/2/0
Corp#
*May 24 19:38:18.875: OSPFv3: rcv. v:3 t:1 l:40 rid:172.16.10.2
aid:0.0.0.0 chk:192D inst:0 from Serial0/0/1
Corp#
*May 24 19:38:22.283: OSPFv3: rcv. v:3 t:1 l:40 rid:172.16.10.3
aid:0.0.0.0 chk:E1D2 inst:0 from Serial0/1/0
Corp#un all
All possible debugging has been turned off
Corp#debug ipv6 ospf hello
OSPFv3 hello events debugging is on
Corp#
*May 24 19:38:32.283: OSPFv3: Rcv hello from 172.16.10.3 area 0 from
Serial0/1/0 FE80::213:60FF:FE20:4E4C interface ID 16
*May 24 19:38:32.283: OSPFv3: End of hello processing
Corp#
*May 24 19:38:35.103: OSPFv3: Rcv hello from 172.16.10.4 area 0 from
Serial0/2/0 FE80::21A:6DFF:FE37:A44E interface ID 6
*May 24 19:38:35.103: OSPFv3: End of hello processing
Corp#
*May 24 19:38:38.875: OSPFv3: Rcv hello from 172.16.10.2 area 0 from
Serial0/0/1 FE80::21A:6DFF:FE64:9B2 interface ID 6
*May 24 19:38:38.875: OSPFv3: End of hello processing
Corp#un all
All possible debugging has been turned off
Corp#