From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Sat Nov 24 2007 - 13:55:33 ART
Thank you Guys, but that is merely answer the question of "What the AS
of the neighbor, where AS is the configured AS on the neighbor e.d.f.g
in the command "router BGP AS".
it doesn't answer the question of "on the other router (e.f.g.h), what
is the AS configured for my router (a.b.c.d) that I am configuring"
which means I want to know on the other router what is the value of
the AS where it is configured as "neighbor a.b.c.d remote-as AS".
I have created an access-list 1 permit e.f.g.h to see the traffic from
the neighbor and debug ip packet 1 dump and still couldn't find the
value.
For the sake of this discussion, I am assuming my router which I am
configuring is a.b.c.d and the other router is e.f.g.h
Cheers,
Joseph
On Nov 24, 2007 6:36 PM, Tarun Pahuja <pahujat@gmail.com> wrote:
> Ranjith,
> Let me teach you a trick to tackle similar problems. If you do
> not know the AS # of the remote peer, turn on notification on the router and
> you will see a similar message:
>
> *Sep 30 11:37: 40.741: %BGP-3-NOTIFICATION: sent to neighbor 10.10.10.2 2/2
> (peer in wrong AS) 2 bytes *0384
> *FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 002D 0104 0384 00B4 9601 0202 1
> 002 0601 0400 0100 0102 0280 0002 0202 00
>
> The Hex Value in the Bold will actuall tell you the right AS you should be
> peering with ;-)
>
> You can use the Calculator in Windows XP in scientific mode, enter this
> value and then just hit decimal value to get the AS value in decimals.
>
> HTH,
> Tarun
>
>
>
> On 11/24/07, Ranjith Samuel <ranjith_samuel@hotmail.com> wrote:
> >
> > Hello Experts,
> >
> > When trying to peer with an Backbone Router via EBGP on a point to point
> > link,
> > I get an error message
> >
> > "%BGP-3-NOTIFICATION: received from neighbor 55.70.5.254 2/2 (peer in
> > wrong
> > AS) 2 bytes 000F"
> >
> > The decimal value at the end of the notification (000F) is the value of my
> > AS
> > which is 15. The Backbone AS is 254
> >
> > Is there anyway i can find out what AS value been configured on the
> > BackBone
> > Router to peer with my router ?
> >
> > Ranjith
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