We have an MPLS network with 20 or so peers using BGP for connectivity from site to site.
When the BGP scheme was originally set up, two sites were given the same AS number. This has not been a problem, until now.
I am trying to filter the route tables on a few of the peers, including the default route that is being advertised.
To do this, I need to distribute some routes that these peers need to get to.
The problem is some of these routes are being advertised from the site that has the same AS number.
The peer that I am trying to filter, is not receiving any of the above routes from the identical AS number.
Is there any way to get around this, other than getting with the provider to change the AS number on one of the branches with identical AS numbers?