[111932] in North American Network Operators' Group
Re: anyone else seeing very long AS paths?
daemon@ATHENA.MIT.EDU (Hank Nussbacher)
Tue Feb 17 11:10:29 2009
Date: Tue, 17 Feb 2009 18:10:24 +0200 (IST)
From: Hank Nussbacher <hank@efes.iucc.ac.il>
To: Jared Mauch <jared@puck.nether.net>
In-Reply-To: <20090217150555.GB73561@puck.nether.net>
Cc: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
On Tue, 17 Feb 2009, Jared Mauch wrote:
> Or until people who are still running multi-year old cisco code
> actually upgrade? This seems to primarily impact:
>
> 1) Old cisco code
> 2) PC based bgp daemons
>
> Both of which likely just need to be upgraded. I actually suspect
> that a lot of people who dropped their bgp sessions did not notice something
> happened, and still will not upgrade their code. I searched the archives, some
> variations of this have happened since 2001. There's been a few PSIRT and
> other issues since then, I suspect these people don't even know they have a
> bgp speaking device anymore.
While at it - perhaps others wish to join this bugid so as to enhance IOS:
CSCso47162 Bug Details
BGP-6-ASPATH message should print offending prefix(es)
None
Symptoms
Syslog message below doesn't print info about offending prefix(es)
%BGP-6-ASPATH: Invalid AS path [chars] received from [int]: [chars]
Further Problem Description
Examples of such a message :
%BGP-6-ASPATH: Long AS path 64501 64501 65000 65000 received from x.x.x.x:
Morethan configured MAXAS-LIMIT
%BGP-6-ASPATH: Invalid AS path (64721) 64700 64720 65400 65231 received
from x.x.x.x: Non confederation peer
I opened it in March 2008 and the more people who bug Cisco to implement
this sev 6 request - the better off we will all be in the future.
-Hank
