[c-nsp] BGP Peering with overlapping private AS

[Oliver Boehmer (oboehmer)]

Anton.Schweitzer at o2.com <> wrote on Tuesday, January 24, 2006 11:42 AM:

> Hi,
> 
> we have the following problem. We need to peer with an partner which
> is using an private AS  we also use in our MPLS Core :
> 
> so wa have the following chain of private ASses :
> 
> 
> AS-65401-AS65400-AS65402----------Peering to
> External---------------AS64203----AS65400-
> 
> Is there any way to manipulate the AS path so we can cut or hide
> 65400 ? 

Assuming these are all MPLS-VPN CE ASN, you might want to investigate
the use "neighbor x.x.x.x allowas-in" command on the AS65400 routers'
eBGP connection to 65402 and 64203 so they accept paths with their own
ASN in it.. 

	oli