[c-nsp] Two mpls provider with the same core AS# workaround

[Roger Wiklund]

1. The providers are running L3VPN in their MPLS. We have CE sites
that run BGP to the PEs.

2. We are the customer.

So basically we have 2 providers, in the middle we have our network,
where we get all the routes from each provider. And we want to
propagate the routes via BGP between them.

Regards
Roger

On Mon, Sep 20, 2010 at 2:25 PM, Arie Vayner (avayner)
<avayner at cisco.com> wrote:
> Roger,
>
> What kind of services these network run (Inter-AS L3VPN)?
> What kind of service does your network provide in the scheme of all
> things (are you a transit MPLS provider, the customer etc)?
>
> Arie
>
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Roger Wiklund
> Sent: Monday, September 20, 2010 12:37
> To: Cisco-nsp
> Subject: [c-nsp] Two mpls provider with the same core AS# workaround
>
> Hi.
>
> Scenario: Two MPLS providers, one major with bulk of the sites. one
> minor with ~10 sites.
> Both providers have the same AS# in the core, and I want to exchange
> routes between these providers (via our network, not directly betweent
> the providers).
>
> to overcome this, I thinking about some different approaches (on the
> minor MPLS provider side/in our own network)
>
> BGP aggregate (in our network)
> allow-as in (minor MPLS providers network)
> local-as + allow-as in (minor mpls providers network)
> remove private as function in IOS 15.1(2)T (can remove private AS even
> if you have a mix of public and private AS#)
>
> Anyone with some experience on this and how this best can be solved?
>
> Thanks!
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