OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks
RFC 4577, “OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks”, is a Proposed Standard document published in June 2006 by E. Rosen, P. Psenak, P. Pillay-Esnault. It updates RFC 4364. The canonical text is published by the RFC Editor.
Abstract
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.
This document updates RFC 4364. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 4577 is hosted at rfc-editor.org. Available in TXT,HTML.
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