[rfc-dist] RFC 4797 on Use of Provider Edge to Provider Edge (PE-PE) Generic Routing Encapsulation (GRE) or IP in BGP/MPLS IP Virtual Private Networks

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        RFC 4797

        Title:      Use of Provider Edge to 
                    Provider Edge (PE-PE) Generic Routing Encapsulation 
                    (GRE) or IP in BGP/MPLS IP 
                    Virtual Private Networks 
        Author:     Y. Rekhter, R. Bonica,
                    E. Rosen
        Status:     Informational
        Date:       January 2007
        Mailbox:    yakov at juniper.net, 
                    rbonica at juniper.net, 
                    erosen at cisco.com
        Pages:      10
        Characters: 18985
        Updates/Obsoletes/SeeAlso:   None

        I-D Tag:    draft-ietf-l3vpn-gre-ip-2547-05.txt

        URL:        http://www.rfc-editor.org/rfc/rfc4797.txt

This document describes an implementation strategy for BGP/MPLS IP
Virtual Private Networks (VPNs) in which the outermost MPLS label
(i.e., the tunnel label) is replaced with either an IP header or an
IP header with Generic Routing Encapsulation (GRE).

The implementation strategy described herein enables the deployment
of BGP/MPLS IP VPN technology in networks whose edge devices are MPLS
and VPN aware, but whose interior devices are not.  This memo provides information for the Internet community.

This document is a product of the Layer 3 Virtual Private Networks
Working Group of the IETF.


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