[157003] in North American Network Operators' Group
RE: Internet routing table "completeness" monitoring?
daemon@ATHENA.MIT.EDU (Joseph Jackson)
Wed Oct 3 10:01:55 2012
From: Joseph Jackson <jjackson@aninetworks.net>
To: Neil Robst <neil.robst@kit-digital.com>, "ml@kenweb.org" <ml@kenweb.org>,
North American Networking and Offtopic Gripes List <nanog@nanog.org>
Date: Wed, 3 Oct 2012 07:01:15 -0700
In-Reply-To: <ED0DF282D635A440994C770474DBAEF301641D60@TH-BEEXCH01.KIT.CORP>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Not sure I don't have any non-cisco BGP routers. Sorry!
-----Original Message-----
From: Neil Robst [mailto:neil.robst@kit-digital.com]=20
Sent: Wednesday, October 03, 2012 8:54 AM
To: Joseph Jackson; ml@kenweb.org; North American Networking and Offtopic G=
ripes List
Subject: RE: Internet routing table "completeness" monitoring?
This is still only possible on Cisco routers, isn't it - Foundry/Brocade ge=
ar doesn't currently include an SNMP OID for this info, does it?
-----Original Message-----
From: Joseph Jackson [mailto:jjackson@aninetworks.net]=20
Sent: 03 October 2012 14:51
To: ml@kenweb.org; North American Networking and Offtopic Gripes List
Subject: RE: Internet routing table "completeness" monitoring?
I have cacti graph the amount of prefixes announced and withdrawn from a BG=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.
