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Hi Lars,
Thank you for the reply.
The solution mentioned provides the AS information you configured under BGP process. But we need to know what AS Number is remote as is expecting. That will show only by the debug at neighbor router (which I considered here is BB2 (Backbone). Your router will not tell anything as the connected what AS is expected by neighbor router so that you can configure thru “neighbor X.X.X.X local-as YY’.
Either proctor has to give access to BB router or tell us as what AS is expected by the BB router.
Thanks..
—–Original Message—– From: Lars Christensen [mailto:perseusdk@gmail.com] Sent: Sunday, July 20, 2008 7:33 PM To: ‘Vinod Lodhi’; ccielab@groupstudy.com; ccie-rs@ieoc.com Subject: RE: Peer in wrong AS at BB2 router | Will proctor tell us the right AS or will provide the access to BB router?
Hi Vinod
I believe you won’t get any other answer from the proctor that: “You are a CCIE candidate, hence you are able to figure out which AS number the BB router has been configured with.”
And the proctor is right… You actually can identify the right remote AS number from the debug output. Try take a look at http://fengnet.com/book/Optimal%20Routing%20Design/ch06lev1sec1.html or http://www.groupstudy.com/archives/ccielab/200711/msg01765.html
Regards, Lars Christensen CCIE #20292
—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Vinod Lodhi Sent: 20. juli 2008 15:51 To: ccielab@groupstudy.com; ccie-rs@ieoc.com Subject: Peer in wrong AS at BB2 router | Will proctor tell us the right AS or will provide the access to BB router?
Hi:

How to attempt the question if the BB (Backbone router) is configured in wrong AS for neighbor. Will we get the access to BB routers in LAB exam or proctor will tell us the configured AS for that neighbor.

This question I got from the Jeff Doyle book, I was wondering if this happened with BB router, how will we get the right information as we don’t have access.

Question details:
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2: Example 3-167 shows debug output from routers R1 and R5 in Figure 3-37. What problem do the messages indicate?
Example 3-167 debug Output from R1 and R5 in Figure 3-37

R1#debug ip bgp
BGP debugging is on
R1#
BGP: 172.16.255.5 open active, local address 172.16.255.6
BGP: 172.16.255.5 sending OPEN, version 4
BGP: 172.16.255.5 received NOTIFICATION 2/2 (peer in wrong AS) 2 bytes 000A
BGP: 172.16.255.5 closing