Configuring OSPFv3 timers on a per area basis is a shortcut to applying the timers to each VLAN in the area at the time of configuration.
If you add more VLANs to the area, you must configure the timers for the new VLANs explicitly. Use the command:
configure ospfv3 [vlan vlan-name | tunnel tunnel-name | [vlan | tunnel] all] timer {retransmit-interval} retransmit-interval {transit-delay} transit-delay {hello-interval} hello-interval {dead-interval} dead-interval
