Chapter 4. Virtual Router Connectivity

The individual components of the Multiprotocol Label Switching (MPLS) virtual private network (VPN) architecture offer network designers additional service capabilities beyond those originally envisioned in the MPLS VPN architecture. This chapter focuses on the virtual routing and forwarding (VRF) table capabilities built into Cisco IOS, such as the ability to do the following:

  • Use the VRF functionality without using MPLS label imposition or Multiprotocol Border Gateway Protocol (BGP) extensions. (This is sometimes referred to as VRF-lite or multi-VRF functionality.)

  • Build complex routing scenarios without being directly connected to the MPLS VPN backbone via a provider edge (PE) router

  • Perform network address ...

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