DUAL-AS

Dear Expert,

I have a doubt on INELAB1 CHAPTER 7.51.

Exercise: R5 should peer with R4 using the AS Number 146?

Solution:

R5:

router bgp 200
neigbor 155.1.45.4 remote-as 146

R4:

router bgp 146
neighbor 155.1.45.5 local-as 100 no-prepend replace-as dual-as

My Doubt: If we configure neighbor 155.1.45.5 remote-as 200, its more than
enough , the R5 wont see AS100 on AS-Path? So why they require these long
configuration?

With Regards

P.Saravanan

Blogs and organic groups at http://www.ccie.net
Received on Mon Apr 01 2013 - 11:00:36 ART