IEWB - Ver3 - Lab 2 - Task 5.3 (Local-as)

From: Mohamed Saeed (mohamed_saeed2@rayacorp.com)
Date: Mon Oct 30 2006 - 16:34:14 ART


Hi All,

In this task, it was required to configure SW1 to appear to BB3 as if it
was in AS 100. The solution guide solved it as follow:

On SW1:

router bgp 400

  neighbor 204.12.1.254 local-as 100 no-prepend

This way, BB3 will see the routes received from SW1 with AS path 100
400.

The "no-prepend" option was used here to prevent SW1 from prepending
this imaginary AS number (100) to the routes received from BB3. I do
agree that this should be done.

My question is that using the "no-prepend" option was not explicitly
required in the task, will we lose points in a real lab exam for using
it. What if we used the "replace-as" option also. It could be used to
make BB3 sees the routes received from SW1 with AS path of 100.

Regards

Mohamed Saeed, CCNP - CCIP



This archive was generated by hypermail 2.1.4 : Wed Nov 01 2006 - 07:29:07 ART