Configuring InterAS MPLS VPNs - CSC (Carriers Supporting Carriers)

In this blogtorial we will take a peek at how to configure InterAS MPLS. InterAS MPLS can be deployed to support customer sites traversing different SPs (Service Providers). 

In this topology we will have 3 customer Sites. 2 of them connection to two different PEs routers in the same AS and another site connected to another PE router in a different AS. 

Topology below and let's get started. 

Relevant configurations are posted below.