FYI to all involved. This has been resolved. Moved physical cabling to a new port on our ASR and like magic. Sorted.
From: Shanawaz Batcha [mailto:[email protected]] Sent: 08 May 2012 13:15 To: Scantlebury, Kieron Cc: [email protected] Subject: Re: [c-nsp] 7606 to 6509 [BGP hold time issue] Now that you are confident you have tried a lower MTU setting satisfactorily, just revisiting a couple of points mentioned by others (at the cost of sounding repetitive but always good to check) 1. Is BGP MSS or PMTUD explicitly set on either side? have you tried disabling them 2. Is BGP max prefix set on the other side ? On Tue, May 8, 2012 at 7:59 PM, Scantlebury, Kieron <[email protected]<mailto:[email protected]>> wrote: MTU's been checked and confirmed on numerous occasions with the customer. Their control plane has no policing. FYI. He has numerous other connections to the same device all receiving a full routing table and they all work fine. Its just our connection that's having the issue. Its driving me round the bend :) Cheers Kieron -----Original Message----- From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Shanawaz Batcha Sent: 04 May 2012 23:14 To: [email protected]<mailto:[email protected]> Subject: [c-nsp] 7606 to 6509 [BGP hold time issue] During the 3 minutes of the session holding up, do you see any packets in the OutQ (show ip bgp summ) Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 172.16.2.1 4 64900 1754971 1714093 1406547 0 0 7w2d 8 As has been fairly pointed out, it looks like your 'fat' update packets are likely dropped by either an MTU mismatch or a CoPP filter on the other side. Its hard to know either way without further debugging (debug ip bgp update) run during your off-hours Shaan _______________________________________________ cisco-nsp mailing list [email protected]<mailto:[email protected]> https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ -- "Twenty years from now you will be more disappointed by the things that you didn't do than by the ones you did do. So throw off the bowlines. Sail away from the safe harbor. Catch the trade winds in your sails. Explore. Dream. Discover." _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
