From: Nick Griffin (nick.jon.griffin@gmail.com)
Date: Sun Dec 10 2006 - 15:49:26 ART
If I understand you correctly, add the local as keyword on R2 for AS 215, or
change your AS on R2.
router bgp 115
neighbor 11.11.1.1 remote-as 111
neighbor 11.11.1.1 transport connection-mode passive
neighbor 11.11.1.1 ebgp-multihop 255
neighbor 11.11.1.1 update-source Loopback0
neighbor 11.11.1.1 local-as 215
On 12/10/06, cadet <cadet22@gmail.com> wrote:
>
> Hello !
> it is not work in my test :(
>
> for example:
>
> r1(AS 111) ----- r2(AS 115)
>
>
> R1 --- initiate bgp session
> router bgp 111
> neighbor 11.11.2.2 remote-as 215 -- try establish session with AS 215
> neighbor 11.11.2.2 ebgp-multihop 255
> neighbor 11.11.2.2 update-source Loopback0
>
> R2
> router bgp 115
> neighbor 11.11.1.1 remote-as 111
> neighbor 11.11.1.1 transport connection-mode passive
> neighbor 11.11.1.1 ebgp-multihop 255
> neighbor 11.11.1.1 update-source Loopback0
>
>
> So I SEE on R2 next log:
> *Nov 9 00:38:28.228: tcp0: I ESTAB 11.11.1.1:34382 11.11.2.2:179 seq
> 2022724993
> DATA 45 ACK 4131500569 PSH WIN 16384
> *Nov 9 00:38:28.240: tcp0: O ESTAB 11.11.1.1:34382 11.11.2.2:179 seq
> 4131500569
> DATA 64 ACK 2022725038 PSH WIN 16339
> *Nov 9 00:38:28.248: tcp0: I ESTAB 11.11.1.1:34382 11.11.2.2:179 seq
> 2022725038
> DATA 23 ACK 4131500633 PSH WIN 16320
> *Nov 9 00:38:28.248: %BGP-3-NOTIFICATION: received from neighbor
> 11.11.1.1 2/2 (peer in wrong AS) 2 bytes 0073
>
> 0073 = 115
>
> BUT I need see D7 === 215
>
> Do you have any ideas ?
>
>
> Hello Nick,
>
> Sunday, December 10, 2006, 6:08:11 PM, you wrote:
>
> > Perhaps an easier way to force the opposite peer to become the tcp
> server in
> > regards to the bgp, less margin for error this way:
>
>
> > router bgp 300
> > !
> > no synchronization
> > bgp log-neighbor-changes
> > neighbor 192.168.12.2 remote-as 200
> > neighbor 192.168.12.2 transport connection-mode passive <---------
> > no auto-summary
>
> > This can also be done in a peer session template versus per neighbor.
>
>
> > On 12/10/06, Ivan <ivan@iip.net> wrote:
> >>
> >> You must force the remote peer to initiate BGP-session. Then in error
> >> message
> >> you see AS-number wich expect from you.
> >> To achieve this try to apply outbound access-list to interface directed
> to
> >> remote peer
> >>
> >> access-list 150 deny ip host BGP_IP_ORIGIN host BGP_IP_PEER eq bgp
> >> access-list 150 permit ip any any
> >>
> >> On Sunday 10 December 2006 11:53, CharlesB wrote:
> >> > I am doing a task in IE labs.
> >> >
> >> > The task says, far end router admin mis-configured BGP AS number, and
> >> they
> >> > can not correct it now. Find a solution to peer with their router.
> >> > And they indicate the far end configured AS, so we can put the
> local-as
> >> XX
> >> > to match with their config.
> >> > Now, what if, we do not know what they put there.
> >> > I keep using debug ip bgp on my end, but I can not see the info. I
> put
> >> on
> >> > my router wrong target AS number, wrong local-as etc. The result is
> that
> >> it
> >> > is hard to figure out what AS they are expecting from me.
> >> > If I go to far end and do the same debug I can see what was expected
> AS
> >> > from me in that router, but this does not help the case I am trying
> to
> >> > figure out.
> >> > Am I missing something here?
> >> > May be there is no solution to this? We must know their mistake, is
> that
> >> > correct?
> >> > Any thoughts?
> >> >
> >> >
> _______________________________________________________________________
> >> > Subscription information may be found at:
> >> > http://www.groupstudy.com/list/CCIELab.html
> >>
> >> --
> >> Ivan
> >>
> >> _______________________________________________________________________
> >> Subscription information may be found at:
> >> http://www.groupstudy.com/list/CCIELab.html
>
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
>
> --
> Best regards,
> cadet mailto:cadet22@gmail.com
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