[91413] in North American Network Operators' Group
RE: Global Crossing Contact / BGP and SONET interaction question
daemon@ATHENA.MIT.EDU (Randy Epstein)
Wed Jul 26 01:44:11 2006
From: "Randy Epstein" <repstein@chello.at>
To: <nanog@merit.edu>
Cc: "'Forrest W Christian'" <fwc@mt.net>
Date: Wed, 26 Jul 2006 01:43:31 -0400
In-Reply-To: <44C6F5B8.7050805@mt.net>
Errors-To: owner-nanog@merit.edu
Forrest:
<snip>
>Recently my BGP session has started flapping on the GX circuit... It
>looks something like this:
>
>Jul 21 21:33:32.703 UTC: %BGP-5-ADJCHANGE: neighbor 67.17.168.73 Up
>
>There are no other log entries during the periods when this occur.
>Unfortunately this causes enough prefix flaps that any prefixes which
>are preferred through GX are damped for like a half hour by certain
>providers as my BGP routes get added/withdrawn through the GX link.
<snip>
I don't have an answer to the root cause of your problem, and I'm not
looking for a discussion on route dampening (there are enough debates on
this issue to make your head spin), but may I suggest you raise your hold
timers to prevent your BGP sessions from going down on short disturbances as
these?
>-forrest
Randy
