[157000] in North American Network Operators' Group
RE: Internet routing table "completeness" monitoring?
daemon@ATHENA.MIT.EDU (Joseph Jackson)
Wed Oct 3 09:51:30 2012
From: Joseph Jackson <jjackson@aninetworks.net>
To: "ml@kenweb.org" <ml@kenweb.org>, North American Networking and Offtopic
Gripes List <nanog@nanog.org>
Date: Wed, 3 Oct 2012 06:50:50 -0700
In-Reply-To: <506BC25D.8050603@kenweb.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
I have cacti graph the amount of prefixes announced and withdrawn from a BG=
P peer on each BGP router.
-----Original Message-----
From: ML [mailto:ml@kenweb.org]=20
Sent: Tuesday, October 02, 2012 11:43 PM
To: North American Networking and Offtopic Gripes List
Subject: Internet routing table "completeness" monitoring?
Has anyone put in place a method to identify if one their BGP peers suddenl=
y withdraws X% of their prefixes?
e.g I should expect ~420k prefixes in a "complete"[1] routing table from a =
transit peer today. If suddenly I'm only getting 390k prefixes I'd guess a=
major network was depeered or similiar.
If so how are people doing this? SNMP MIB, screen scrape?
[1] Varying levels of completeless apply.
