same bgp AS number at all brach locations

Unanswered Question
Dec 2nd, 2008

hello friends,

please tell me, if i use same bgp AS number for all branch locations then what will be routing issues, i will get?

I have this problem too.
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Giuseppe Larosa Wed, 12/03/2008 - 01:35

Hello Sourabh,

just a little add to Milan's post:

if you use a Service Provider MPLS L3 VPN this is not an issue: the service provider network can perform AS override of the private AS (64512-65535 range) that it has given to your company.

If you use iBGP and you own your own WAN infrastructure (or you have bought a L2 service) this is not a problem too but you may need to deploy BGP Route Reflector in order to have the routes to propagate in all the domain without using a full mesh of iBGP sessions.

Hope to help

Giuseppe

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