Neighborship on MPLS VPN
Multiprotocol Label Switching (MPLS) Virtual Private Networks (VPN) create a WAN service that has some similarities but many differences when compared to Frame Relay. The customer routers connect to the service, often with serial links but at other times with Frame Relay PVCs or with Ethernet. The service itself is a Layer 3 service, forwarding IP packets through a cloud. As a result, no predefined PVCs need to exist between the customer routers. Additionally, the service uses routers at the edge of the service provider cloud—generically called provider edge (PE) routers—and these routers are Layer 3 aware.
That Layer 3 awareness means that the customer edge (CE) routers form an EIGRP neighborship with the PE router on ...
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