Name: draft-ietf-l3vpn-ospf-2547-02
Title: OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP VPNs
State: Pending
Authors: Eric Rosen
Group: Layer 3 Virtual Private Networks (l3vpn)
Date: 2004-10-21
Many Service Providers offer Virtual Private Network ("VPN") services to
their customers, using a technique in which customer edge routers ("CE
routers") are routing peers of provider edge routers ("PE routers"). The
Border Gateway Protocol ("BGP") is used to distribute the customer's routes
across the provider's IP backbone network, and Multiprotocol Label
Switching ("MPLS") is used to tunnel customer packets across the provider's
backbone. This is known as a "BGP/MPLS IP VPN". The base specification for
BGP/MPLS IP VPNs presumes that the routing protocol on the interface
between a PE router and a CE router is BGP. This document extends that
specification by allowing the routing protocol on the PE/CE interface to be
the Open Shortest Path First ("OSPF") protocol.
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