By the end of this chapter, you should know and be able to explain the following:
The definition of a VPN
The operation of MPLS VPN
What RDs and RTs are
The role of Multiprotocol BGP in MPLS VPN networks
The packet forwarding through the MPLS VPN network
The operation of PE-CE routing protocols and their specifics for MPLS VPNs
MPLS VPN, or MPLS Virtual Private Networks, is the most popular and widespread implementation of MPLS technology. Its popularity has grown exponentially since it was invented, and it is still growing steadily. Although most service providers have implemented it as a replacement for the Frame Relay and ATM services that were popular before it, MPLS VPN is now seeing a growing interest ...