OSPF Problem with CISCO

[ADe]

Hello 

I have 2 cluster GWs in the same VLAN with a CISCO Layer 3 switch and OSPF running.

One works well well with CISCO and OSPF, but the other cluster stucks in EXSTART with both other.

I found following with the clish command :

show ospf error :

KUNI-NC2A0-FW02> show ospf errors
------------------------------ OSPF Global Errors ------------------------------
IP Errors

Protocol 0                                  BadSource 0
BadDestination 3261               Size 0
NoSuchIndex 0                         OwnPacket 0

Protocol Errors

NoOspf 0

---------------------------- OSPF Instance default -----------------------------

What is the meaning of : 

BadDestination 3261

and how could this be solved  ???

[Chris_Atkinson · Accepted solution]

If the gateways are clustered together (as a single router - VIP) only one will have an active adjacency, the other would be awaiting a failover and the configuration of graceful restart is also recommended here.