28.7.2 Checking area borders

On an area border router, you can use the show ipv6 ospf operation command to make sure that AreaBorder appears as the router type in the Flags section of the command output.

You can also check whether inter-area route summarization has been applied correctly.

Figure 28-7: Result of executing show ipv6 ospf command
>show ipv6 ospf Date 20XX/07/14 12:00:00 UTC OSPFv3 protocol: ON Domain: 1 Router ID: 172.16.1.1 Distance: Intra Area: 10, Inter Area: 10, External: 150 Flags: <AreaBorder ASBoundary> SPF Interval: 7s, SPF Delay: 3s Graceful Restart: Helper Helper Status : Finished 20XX/07/08 14:12:22 Area: 0, Interfaces: 2 Network Range State 3ffe:501:ffff:100::/64 DoNotAdvertise 3ffe:501:ffff:200::/64 Advertise Area: 1, Interfaces: 1 Network Range State - -

Figure 28-7: Result of executing show ipv6 ospf command

>show ipv6 ospf
Date 20XX/07/14 12:00:00 UTC
OSPFv3 protocol: ON
 
Domain: 1
Router ID: 172.16.1.1
Distance:
  Intra Area: 10, Inter Area: 10, External: 150
Flags: <AreaBorder ASBoundary>
SPF Interval: 7s, SPF Delay: 3s
Graceful Restart: Helper
    Helper Status : Finished  20XX/07/08 14:12:22
Area: 0, Interfaces: 2
    Network Range                                 State
    3ffe:501:ffff:100::/64                        DoNotAdvertise
    3ffe:501:ffff:200::/64                        Advertise
Area: 1, Interfaces: 1
    Network Range                                 State
    -                                             -