Re: peer in wrong AS

Hi,

BGP: 2.2.2.2 rcvd OPEN w/ remote AS 65511 <<<<

Here 65511 is the remote AS process (router bgp <AS>).

I think the question here is, what AS value been configured on the BackBone
Router
to peer with my router (remote-as <AS-NUMBER> configured in BGP process)

Thanks,
Srinivas

On Wed, Jun 24, 2009 at 3:46 AM, Travis Niedens <niedentj_at_hotmail.com>wrote:

> 3600 Software (C3640-IK9O3S-M), Version 12.4(25)
>
>
>
> Dynamips lab
>
>
>
> Travis
>
>
>
> Date: Tue, 23 Jun 2009 22:15:13 +0000
> Subject: Re: peer in wrong AS
> From: ccielight_at_gmail.com
> To: niedentj_at_hotmail.com
> CC: ccielab_at_groupstudy.com
>
>
>
> Hi Travis,
> which code r u runnig ?
> because I'm runing c2600-adventerprisek9-mz.124-3a.bin and it gives me :
>
> R4#debug ip bgp in
> % Ambiguous command: "debug ip bgp in"
> R4#debug ip bgp in ?
> <cr>
> A.B.C.D BGP neighbor address
> dampening BGP dampening
> groups BGP Config (peer-groups, templates) and Update groups
> prefix-filter Push out prefix-list ORF and do inbound soft reconfig
> <cr>
>
>
> On Tue, Jun 23, 2009 at 10:08 PM, Travis Niedens <niedentj_at_hotmail.com>
> wrote:
>
>
> Did you try "debug ip bgp in" ?
>
>
> here's a sample from my lab:
>
> *Mar 1 00:06:40.223: BGP: 2.2.2.2 open active, local address 2.2.2.1
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 went from Active to OpenSent
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 sending OPEN, version 4, my as: 65510,
> holdtime 180 seconds
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcv message type 1, length (excl.
> header)
> 26
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcv OPEN, version 4, holdtime 180
> seconds
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcv OPEN w/ OPTION parameter len: 16
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcvd OPEN w/ optional parameter type 2
> (Capability) len 6
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has CAPABILITY code: 1, length 4
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has MP_EXT CAP for afi/safi: 1/1
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcvd OPEN w/ optional parameter type 2
> (Capability) len 2
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has CAPABILITY code: 128, length 0
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has ROUTE-REFRESH capability(old)
> for
> all address-families
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 rcvd OPEN w/ optional parameter type 2
> (Capability) len 2
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has CAPABILITY code: 2, length 0
> *Mar 1 00:06:40.295: BGP: 2.2.2.2 OPEN has ROUTE-REFRESH capability(new)
> for
> all address-families
> BGP: 2.2.2.2 rcvd OPEN w/ remote AS 65511 <----
>
> Travis
>
> > Date: Tue, 23 Jun 2009 21:37:37 +0000
> > Subject: peer in wrong AS
> > From: ccielight_at_gmail.com
> > To: ccielab_at_groupstudy.com
>
>
>
> >
> > Hi Community,
> >
> > My question is about how to know (guess) which ASN is configured on the
> peer
> > side ( BB router : we suppose of course I don't have access to BB),
> >
> > the error message :
> > *Jun 20 02:47:49.721: %BGP-3-NOTIFICATION: received from
> > neighbor 12.12.10.254 2/2 (peer in wrong AS) 2 bytes 000C
> >
> > show the value 000C ( hexa ) which is number 12 , this is the ASN value
> on
> > my router not on BB side.
> >
> >
> > I tried "debug ip bgp" but cannot get any relevant information.
> >
> > Any help please ?
> >
> > Br //
> >
> > Maher
> >
> >
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Received on Wed Jun 24 2009 - 10:45:22 ART