MPLS VPN Components2. “VPN-aware” routing instances

• Each provider edge router has a “VPN-aware” routing instance per attached VPN

• Known as VPN Routing and Forwarding instances (VRFs)

• VRFs are are associated to (physical / sub / virtual / tunnel) interfaces connected to CEs

• Different interfaces may share the same VRF if the connected sites may share the same routing information

Previous slide

Next slide

Back to first slide

View graphic version