nanog mailing list archives
Re: bgp update destroying transit on redback routers ?
From: Alexandre Snarskii <snar () snar spb ru>
Date: Thu, 1 Dec 2011 20:38:03 +0400
On Thu, Dec 01, 2011 at 05:07:15PM +0100, Igor Ybema wrote:
Hi there, Since about 15:00u GMT we receive bgp updates from our transit which destroys the bgp sessions with them with message: send NOTIFICATION: 3/9 (update: optional attribute error) with 11 byte data. mxReadMs=610 We use redback smartedge routers (SE100) currently for BGP. Anyone who have seen this also?
Have a complaint from our customer too. On our side (juniper) this is logged as: NOTIFICATION received from <peer-ip> (External AS <peer-as>): code 3 (Update Message Error) subcode 9 (error with optional attribute), Data: c0 07 08 00 00 00 As far as I can decode this attribute this is: c0: optional, transitive, no partial, no extended-length 07: AGGREGATOR 08: attribute length is 8 bytes. I think attribute length may be a problem here, because per RFC AGGREGATOR is an optional transitive attribute of length 6. -- In theory, there is no difference between theory and practice. But, in practice, there is.
Current thread:
- bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Alexandre Snarskii (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Christopher Morrow (Dec 01)
- Re: bgp update destroying transit on redback routers ? Igor Ybema (Dec 01)
- Re: bgp update destroying transit on redback routers ? Christopher Morrow (Dec 01)
- 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 ? Christopher Morrow (Dec 01)
- Re: bgp update destroying transit on redback routers ? Randy Bush (Dec 02)
- Re: bgp update destroying transit on redback routers ? Alexandre Snarskii (Dec 01)