Configure an OSPFv3 Interface

In this example, OSPFv3 is enabled on the SEFOS1 switch, and 10.0.0.1 is specified as the router ID.

1. Enter Global Configuration mode.

   SEFOS# configure terminal

2. Enable OSPFv3 globally in SEFOS1.

   SEFOS(config)# ipv6 router ospf

3. Configure the OSPFv3 router ID.

   SEFOS(config-router)# router-id 10.0.0.1

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   Note - The no form of this command is not supported. Therefore, you cannot remove the router ID, you can only change it to a different router ID IP.

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4. Exit Router Configuration mode.

   SEFOS(config-router)# end

5. Ensure that the router ID value is correct.

   SEFOS# show ipv6 ospf
    
    Router Id: 10.0.0.1            ABR Type:  Standard ABR
    SPF schedule delay: 5 secs     Hold time between two SPFs: 10 secs
    Exit Overflow Interval: 0      Ref BW: 100000         Ext Lsdb Limit: -1
    Trace Value: 0x00000800        As Scope Lsa: 0        Checksum Sum: 0x0
    Demand Circuit: Enable         Passive Interface: Disable
    Nssa Asbr Default Route Translation: Disable
    Number of Areas in this router  1
               Area      0.0.0.0
       Number of interfaces in this area is  0
       Number of Area Scope Lsa: 0      Checksum Sum: 0x0
       Number of Indication Lsa: 0      SPF algorithm executed:  0 times

6. Enter Global Configuration mode in SEFOS1.

   SEFOS# configure terminal

7. Enable the OSPFv3 interface on the VLAN interfaces.

   This action defines the interfaces on which OSPFv3 runs and the area ID for those interfaces.

   SEFOS(config)# interface vlan 11
   SEFOS(config-if)# ipv6 ospf area 0.0.0.0
   SEFOS(config-if)# exit
   SEFOS(config)# interface vlan 10
   SEFOS(config-if)# ipv6 ospf area 0.0.0.6
   SEFOS(config-if)# end

8. Ensure that OSPFv3 is set to run the correct interfaces.

   SEFOS# show ipv6 ospf interface
    
   Interface Name: vlan11       Interface Id: 40    Area Id: 0.0.0.0
   Local Address: fe80::214:4fff:fe6c:628f          Router Id: 10.0.0.1
   Network Type: BROADCAST     Cost: 1              State: DR
   Designated Router Id: 10.0.0.1      local address: fe80::214:4fff:fe6c:628f
   Backup Designated Router Id: 0.0.0.0       local address: (null)
   Transmit Delay: 1 sec        Priority: 1         IfOptions: 0x0
   Timer intervals configured:
   Hello: 10, Dead: 40, Retransmit: 5, Poll: 120
   Demand Circuit: Disable            Neighbor Probing: Disable
   Nbr Probe Retrans Limit: 10        Nbr Probe Interval: 120
   Hello due in 8 sec
   Neighbor Count is: 0
    
   Interface Name: vlan10      Interface Id: 41    Area Id: 0.0.0.6
   Local Address: fe80::214:4fff:fe6c:628f         Router Id: 10.0.0.1
   Network Type: BROADCAST     Cost: 1             State: DR
   Designated Router Id: 10.0.0.1      local address: fe80::214:4fff:fe6c:628f
   Backup Designated Router Id: 0.0.0.0       local address: (null)
   Transmit Delay: 1 sec        Priority: 1         IfOptions: 0x0
   Timer intervals configured:
   Hello: 10, Dead: 40, Retransmit: 5, Poll: 120
   Demand Circuit: Disable            Neighbor Probing: Disable
   Nbr Probe Retrans Limit: 10        Nbr Probe Interval: 120
   Hello due in 9 sec
   Neighbor Count is: 0