I just had to do a bit of BGP debugging wrt a peer dumping the session
because of a malformed AS-PATH. It turned out that the AS path length was
00 on an EBGP session. Anyway, if you perform a 'debug ip packet dump ACL',
where ACL is an extended IP list that matches the peer IPs, you will get
enough information to decode the entire BGP packet. The reason I mention
this is because 'debug ip bgp' may not be very specific wrt the cause of the
problem.
-chris
> -----Original Message-----
> From: George Robbins [mailto:grr@shandakor.tharsis.com]
> Sent: Friday, October 20, 2000 2:22 PM
> To: cisco-nsp@puck.nether.net; mpicard@sinc.ca
> Subject: Re: Bad attribute
>
>
> "debug ip bgp" (no additional arguments) will give you the
> most information
> about negotiation progress and errors. If you have access to
> the other
> side and it's Cisco, "debug ip bgp updates" on that side will
> give some
> clues about what what's going on at the time the error messages are
> triggered on your side.
>
> George
>
>
> > From cisco-nsp-request@puck.nether.net Fri Oct 20 13:20:14 2000
> > Resent-Date: Fri, 20 Oct 2000 13:16:49 -0400
> > Received-Date: Fri, 20 Oct 2000 13:14:58 -0400
> > Date: Fri, 20 Oct 2000 13:07:22 -0400
> > From: Martin Picard <mpicard@sinc.ca>
> > Subject: Re: Bad attribute
> > To: cisco-nsp@puck.nether.net
> > Resent-From: cisco-nsp@puck.nether.net
> > X-Mailing-List: <cisco-nsp@puck.nether.net> archive/latest/4114
> > X-Loop: cisco-nsp@puck.nether.net
> > Precedence: list
> > Resent-Sender: cisco-nsp-request@puck.nether.net
> >
> > One more try at this ???
> >
> > Even though the BGP session stays up and
> > seems healthy, I keep getting these messages.
> >
> > Are they only really an indication of an error
> > or just a cosmetic bug ???
> >
> > tx
> > martin
> >
> > ----- Message d'origine -----
> > De : "Martin Picard" <mpicard@sinc.ca>
> > À : <cisco-nsp@puck.nether.net>
> > Envoyé : 19 septembre, 2000 15:06
> > Objet : BGP: Bad attribute
> >
> >
> > > Can anybody indicate how I can find the culprit attribute
> > > that causes these messages to be issued ?
> > >
> > > 3d05h: BGP: 10.247.144.2 Bad attributes
> > > 4d02h: BGP: 10.247.144.2 Bad attributes
> > >
> > > tx
> > > Martin
> > >
> > >
> > >
> >
> >
>
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