Peer in wrong AS at BB2 router | Will proctor tell us the right

From: Vinod Lodhi (vinodlodhi@airtelmail.in)
Date: Sun Jul 20 2008 - 10:50:41 ART


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:

===================================================

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



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