mailing list archives
Re: bgp update destroying transit on redback routers ?
From: Christopher Morrow <morrowc.lists () gmail com>
Date: Fri, 2 Dec 2011 16:06:31 -0500
On Fri, Dec 2, 2011 at 9:35 AM, Alexandre Snarskii <snar () snar spb ru> wrote:
This draft says that
...note it's a DRAFT, not a STANDARD...
If a BGP speaker receives a route which has an AS number of zero in the
AS_PATH (or AS4_PATH) attribute, it SHOULD be logged and treated as a
WITHDRAW. This same behavior applies to routes containing zero as the
Aggregator or AS4 Aggregator.
but observed behaviour was more like following:
If a BGP speaker receives [bad route] it MUST close session immediately
with NOTIFICATION Error Code 'Update Message Error' and subcode 'Error with
hence this old behavor
- RE: bgp update destroying transit on redback routers ?, (continued)