[c-nsp] Stranges with BGP

[Rodney Dunn]

I don't think that's it.  That was the bug from
4 years ago where somone leaked a long AS PATH
update that caused the problem.

What does the BGP configuration look like on both sides?

Rodney

On Mon, Dec 13, 2004 at 12:49:12PM +0100, Ben Crocker wrote:
> 
> There's been more than one bug to do with this but perhaps this one 
> applies,
> 

> CSCdr54230 : BGP:attribute length truncated + command to limit AS_PATH 
> size
> 
> Hope it helps,
> 
> 
> On Dec 13, 2004, at 12:29 PM, Alexey Luckyanchikov wrote:
> 
> > Hi.
> >
> > Today I observed strange flapping between two 7513. Log from one side
> > (software version - 12.2(14)S9):
> > Dec 10 23:05:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> > Dec 13 11:39:59: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> > Notification sent
> > Dec 13 11:39:59: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> > 1/2 (illegal header length) 0 bytes
> > Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> > Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> > Notification sent
> > Dec 13 11:40:29: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> > 3/1 (update malformed) 31 bytes CA1A5B12 83000000 00D456E5 B1D45646 F5
> > Dec 13 11:40:29: BGP: 195.248.160.210 Bad attributes FFFF FFFF FFFF 
> > FFFF FFFF FFFF FFFF FFFF 0073 0200 0000 4540 0101 0240 0204 0201 21F2 
> > 4003 04C3 F8BF 9680 0404 0000 0000 4005 0400 0000 5AC0 0804 EC17 BDBA 
> > CA1A 5B12 8300 0000 00D4 56E5 B1D4 5646 F5D4 56
> > Dec 13 11:40:55: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> > Dec 13 11:43:56: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> > Notification sent
> > Dec 13 11:43:56: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> > 4/0 (hold time expired) 0 bytes
> > Dec 13 11:44:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Up
> > Dec 13 12:08:05: %BGP-5-ADJCHANGE: neighbor 195.248.160.210 Down BGP 
> > Notification sent
> > Dec 13 12:08:05: %BGP-3-NOTIFICATION: sent to neighbor 195.248.160.210 
> > 1/2 (illegal header length) 0 bytes
> >
> > And from another (software version - 12.2(14)S10):
> > Dec 13 11:39:59: %BGP-3-NOTIFICATION: received from neighbor 
> > 195.248.160.167 1/2 (illegal header length) 0 bytes
> > Dec 13 11:39:59: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> > Notification received
> > Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> > Dec 13 11:40:29: %BGP-3-NOTIFICATION: received from neighbor 
> > 195.248.160.167 3/1 (update malformed) 31 bytes CA1A5B12 83000000 
> > 00D456E5 B1D45646 F5
> > Dec 13 11:40:29: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> > Notification received
> > Dec 13 11:40:55: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> > Dec 13 11:43:56: %BGP-3-NOTIFICATION: received from neighbor 
> > 195.248.160.167 4/0 (hold time expired) 0 bytes
> > Dec 13 11:43:56: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> > Notification received
> > Dec 13 11:44:24: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> > Dec 13 12:08:05: %BGP-3-NOTIFICATION: received from neighbor 
> > 195.248.160.167 1/2 (illegal header length) 0 bytes
> > Dec 13 12:08:05: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Down BGP 
> > Notification received
> > Dec 13 12:08:35: %BGP-5-ADJCHANGE: neighbor 195.248.160.167 Up
> >
> > Manual session reset help - flapping stopped. I can't find any
> > appropriate to this issue in Bug Navigator. Do you have any ideas about
> > what it was?
> >
> > -- 
> > Sincerely,
> > Alexey Luckyanchikov
> > _______________________________________________
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> >
> >
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> 
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> 
> ben at hamsterjam.net
> http://www.hamsterjam.net
> 
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