Configure the Dead Interval

You can configure the dead interval to specify how long hello packets will not be received by the router before neighbors declare that the router is down. This value must be a multiple of the hello interval value, and must be the same for all routers attached to the same link.

This example sets the dead interval for VLAN 10 to 120 seconds.

1. Configure the dead interval through the CLI.

   SEFOS(config)# interface vlan 10
   SEFOS(config-if)# ipv6 ospf dead-interval 120
   SEFOS(config-if)# end

2. Ensure that the correct dead interval is set for the specified interface.

   SEFOS# show ipv6 ospf interface vlan 10
    
           Ospfv3  Interface  Information
    
   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: BACKUP
   Designated Router Id: 10.0.0.8      local address: fe80::214:4fff:fe6c:d04d
   Backup Designated Router Id: 10.0.0.1      local address: fe80::214:4fff:fe6c:628f
   Transmit Delay: 1 sec        Priority: 1         IfOptions: 0x0
   Timer intervals configured:
   Hello: 10, Dead: 120, Retransmit: 5, Poll: 120
   Demand Circuit: Disable            Neighbor Probing: Disable
   Nbr Probe Retrans Limit: 10        Nbr Probe Interval: 120
   Hello due in 4 sec
   Neighbor Count is: 1
   Adjacent with neighbor 10.0.0.8