After the MPLS network is configured, the provider can configure a VPN. To do so, the provider selects VBRs 10 from the MPLS domain that will serve the VPN and configures a Virtual Router (VR) at each one by assigning it a VPN ID. While VRs are discussed herein, those skilled in the art will recognize that other routing mechanisms such as bridges, switches and the like could be employed without de