[c-nsp] OSPF Flapping

[Bruce Pinsky]

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Greg Boehnlein wrote:
> Hello,
> 	I just started getting a weird kind of OSPF flap between my Cisco 
> 7507s running 12.2.29 Service Provider / VIP release 
> (rsp-pv-mz.122-29.bin) and my Lucent PM3s.
> 
> Aug 17 06:11:15: %OSPF-5-ADJCHG: Process 10, Nbr 207.166.192.28 on 
> FastEthernet0/0 from FULL to DOWN, Neighbor Down: Too many retransmissions
> 
> This only started happening when we downgraded to 12.2.29 from a later 
> version trying to correct the PA-MC-T3 problems we were having.
> 

Would imply that the router failed to see an Ack for LSA and is declaring
the neighbor non-responsive.  Could be a bug, but I didn't see anything
that jumped out at me.

Have you tried some debugging or sniffer trace to see what the exchange
looks like?

- --
=========
bep

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