nanog mailing list archives
Re: bgp update destroying transit on redback routers ?
From: Alexandre Snarskii <snar () snar spb ru>
Date: Fri, 2 Dec 2011 18:35:54 +0400
On Thu, Dec 01, 2011 at 04:56:43PM -0500, Jeff Tantsura wrote:
Hi, Let me take it over from now on, I'm the IP Routing/MPLS Product Manager at Ericsson responsible for all routing protocols. There's nothing wrong in checking ASN in AGGREGATOR, we don't really want see ASN 0 anywhere, that's how draft-wkumari-idr-as0 (draft-ietf-idr-as0-00) came into the worlds.
This draft says that 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 optional attribute'. -- In theory, there is no difference between theory and practice. But, in practice, there is.
Current thread:
- Re: bgp update destroying transit on redback routers ?, (continued)
- Re: bgp update destroying transit on redback routers ? Warren Kumari (Dec 01)
- RE: bgp update destroying transit on redback routers ? Jeff Tantsura (Dec 01)
- Re: bgp update destroying transit on redback routers ? Rob Shakir (Dec 01)
- Re: bgp update destroying transit on redback routers ? Randy Bush (Dec 02)
- Re: bgp update destroying transit on redback routers ? Olivier Benghozi (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- RE: bgp update destroying transit on redback routers ? Jeff Tantsura (Dec 01)
- draft-ietf-idr-as0-00 (bgp update destroying transit on redback routers ?) Daniel Ginsburg (Dec 02)
- RE: draft-ietf-idr-as0-00 (bgp update destroying transit on redback routers ?) Jeff Tantsura (Dec 03)
- Re: [Idr] draft-ietf-idr-as0-00 (bgp update destroying transit on redback routers ?) Brian Dickson (Dec 03)
- Re: bgp update destroying transit on redback routers ? Alexandre Snarskii (Dec 02)
- Re: bgp update destroying transit on redback routers ? Christopher Morrow (Dec 02)
- RE: bgp update destroying transit on redback routers ? Jeff Tantsura (Dec 02)
- Re: bgp update destroying transit on redback routers ? Olivier Benghozi (Dec 22)
- RE: bgp update destroying transit on redback routers ? Jeff Tantsura (Dec 22)
- draft-ietf-idr-as0-00 (bgp update destroying transit on redback routers ?) Daniel Ginsburg (Dec 02)