Re: BGP question

Router 1
=======

do sh run | sec router bgp
router bgp 100
 no synchronization
 bgp log-neighbor-changes
 neighbor 1.0.0.2 remote-as 100
 no auto-summary

Router 2
==========

router bgp 200
 no synchronization
 bgp log-neighbor-changes
 neighbor 1.0.0.1 remote-as 100
 no auto-summary

On R1 ; you will get logs like :

ent
*Sep 8 07:07:58.483: %BGP-3-NOTIFICATION: sent to neighbor 1.0.0.2
active 2/2 (peer in wrong AS) 2 bytes 00C8
*Sep 8 07:07:58.483: %BGP-4-MSGDUMP: unsupported or mal-formatted
message received from 1.0.0.2:
FFFF FFFF FFFF FFFF FFFF FFFF FFFF FFFF 003A 0104 00C8 00B4 1E00 0001 1D02 0601
0400 0100 0102 0280 0002 0202 0002 0383 0100 0206 4104 0000 00C8
*Sep 8 07:07:58.487: %BGP_SESSION-5-ADJCHANGE: neighbor 1.0.0.2 IPv4
Unicast topology base removed from session BGP Notification sent

00C8 in hexa is 200 in decimal .
Thats the clue what the peer's AS is

HTH
Gaurav Madan
CCIE

On Tue, Sep 8, 2009 at 11:45 AM, omar maiah<omar.maiah_at_gmail.com> wrote:
> Hi,
>
> Is there anyway to figure out what AS an EBGP peer has configured me in ?
>
> Regards
>
> --
> Regards
> Omar
>
>
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Received on Tue Sep 08 2009 - 12:37:26 ART