Hi Brad, Thanks for the response. I saw those drops, but they don't come close to the amount of times this is occurring. This happens literally, every 34 minutes (okay, 33 minutes and some seconds :-) ):
Apr 13 06:13:03 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 06:13:03 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 06:13:07 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 06:46:52 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 06:46:53 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 06:46:57 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:20:35 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:20:36 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:20:40 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:53:48 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:53:49 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 07:53:52 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 08:27:36 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 08:27:37 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 08:27:42 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 09:01:31 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.10 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 09:01:31 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.11 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits Apr 13 09:01:35 EDT: %OSPFv3-5-ADJCHG: Process 600, Nbr x.x.x.9 on Vlan2 from FULL to DOWN, Neighbor Down: Too many retransmits The interfaces all show the same info: Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0 On the Vlan2 interface, I show one more drop since I sent the original message on Friday: Input queue: 0/75/17/17 (size/max/drops/flushes); Total output drops: 0 I'm baffled at this point. I'll likely be moving to IS-IS soon, but this is one of those problems that really makes you wonder. ________________________________________ From: Brad Henshaw [EMAIL PROTECTED] Sent: Sunday, April 13, 2008 9:13 AM To: Eric Van Tol; [email protected] Subject: RE: [c-nsp] OSPFv3 down every 34 minutes Eric Van Tol wrote: > In any case, the question now is, what would cause so many > neighbors to retransmit and why on only one router? Packet loss or congestion on the physical links/interfaces connecting to this router? Not sure why it'd be every 34 minutes though. If it were every /30/ minutes, the OSPF refresh would be a real suspect. I notice input drops are shown for int vl2. Check these for the relevant physical interface(s) also. ~Brad _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
