Configure the Interval That Declares a Router Is Down

This procedure sets the interval at which hello packets must not be seen before the neighbors declare the router down.

1. Configure the VLAN 1 interval as 120 seconds.

   SEFOS(config-if)# ip ospf dead-interval 120
   

2. Examine the configuration details.

   SEFOS# show ip ospf interface vlan 1
    
   vlan1 is line protocol is up
   Internet Address 10.4.0.1, Mask 255.255.0.0, Area 0.0.0.0
   AS 1, Router ID 10.10.2.1, Network Type BROADCAST, Cost 1
   Transmit Delay is 1 sec, State 4, Priority 1
   Designated RouterId 10.10.2.1, Interface address 10.4.0.1
   No backup designated router on this network
   Timer intervals configured, Hello 10, Dead 120, Wait 120, Retransmit 5
   Hello due in 4 sec
   Neighbor Count is 0, Adjacent neighbor count is 0