From: boby2kusa@hotmail.com
Date: Tue Jul 08 2003 - 15:11:45 GMT-3
Losing the OSPF's neighbor adjacnecy is indicative of losing the ip
connectivity such as hellos not getting to the other neigh. check the layer
2 connectivity. check the ports where the 3640 is connecting for any
errors. as a last resort you can try re-seating that 6348 so it will run a
diagnostics test and check for any hardware errors.
----- Original Message -----
From: "Kelly Cobean" <kcobean@earthlink.net>
To: <ccielab@groupstudy.com>
Sent: Tuesday, July 08, 2003 10:44 AM
Subject: OSPF Random adjacency failures
> Hey all,
> I've got a problem on a production system that I just can't seem to
> pinpoint an answer for. I've got a pair of 6500 switches with 48 port
> ethernet blades and Sup1A-2GE/MSFC2's in them. The gig ports on the
> supervisors are channeled and trunking. Port 1 of each ethernet blade
> is in VLAN 2 and goes to a Cat2924XL, which also connects a pair of
> 3640's. The MSFC's are both configured with a VLAN1 and VLAN2
> interface. The problem I am having is that the adjacency between one of
> the MSFC's and one of the 3640's (which is the DR for the segment)
> randomly drops, then comes right back up. I can watch the output of
> 'show ip ospf neighbor' on the DR, and when this occurs, I can see the
> dead timer counter go to 0, then as soon as the adjacency drops, it
> comes right back up. At first I thought it might have been a problem
> with the fact that VLAN2 was permitted across the trunk between the two
> cat's so I cleared the vlan from the trunk, but to no avail. I've run
> all the typical debug commands, but I don't see anything indicative of
> the problem. Traffic levels are normal, and there are no access-lists
> in the path. Anyone have any ideas?
>
> Thanks.
> --
> Kelly Cobean <kcobean@earthlink.net>
>
>
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