Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
Community Member

OSPF: Discarding packet on interface vl1 : Packet with same router id as ours

Hello

I Hope someone can give me some advise with this, not all the devices are cisco some are HP but kind of similar :S.

I keep seeing this error and can not figure out what is wrong, i dont belive there should be duplicate routers in the neigbbout table but am a bit unsure.

Please can you take a look at the diagram and let me know if you can see a problem.

Thanks

Andy

Everyone's tags (3)
1 REPLY

OSPF: Discarding packet on interface vl1 : Packet with same rout

Hello, Andrew.

It could be some device on VLAN 1 that is using the same router id as the one you are monitoring.

How was router-id assigned to your router - automatically or manually?

Check current router ID and review all the neighbors: they could be using the same IP-address (id).

One more possible reason is that some device in VL1 is forwarding you back your OSPF Hellows.

You might try to capture ospf packets (just connect any workstation to VL1 in promiscuous mode and use Wireshark) to see source address and content.

636
Views
0
Helpful
1
Replies
CreatePlease to create content