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Inter-Area Point-to-Multipoint (P2MP) Segmented Label Switched Paths (LSPs) (RFC7524)

IP.com Disclosure Number: IPCOM000241585D
Original Publication Date: 2015-May-01
Included in the Prior Art Database: 2015-May-14

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

Y. Rekhter: AUTHOR [+7]

Abstract

This document describes procedures for building inter-area point-to- multipoint (P2MP) segmented service LSPs by partitioning such LSPs into intra-area segments and using BGP as the inter-area routing and label distribution protocol. Within each IGP area, the intra-area segments are either carried over intra-area P2MP LSPs, potentially using P2MP LSP hierarchy, or instantiated using ingress replication. The intra-area P2MP LSPs may be signaled using P2MP RSVP-TE [RFC4875] or P2MP mLDP [RFC6388]. If ingress replication is used in an IGP area, then (multipoint-to-point) LDP LSPs [RFC5036] or (point-to- point) RSVP-TE LSPs [RFC3209] may be used within the IGP area. The applications/services that use such inter-area service LSPs may be BGP Multicast VPN (BGP MVPN), VPLS multicast, or global table multicast over MPLS.

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Internet Engineering Task Force (IETF)                        Y. Rekhter Request for Comments: 7524                                      E. Rosen Category: Standards Track                               Juniper Networks ISSN: 2070-1721                                              R. Aggarwal                                                                   Arktan                                                                 T. Morin                                                            I. Grosclaude                                                                   Orange                                                               N. Leymann                                                      Deutsche Telekom AG                                                                  S. Saad                                                                     AT&T                                                                 May 2015

                  Inter-Area Point-to-Multipoint (P2MP)                  Segmented Label Switched Paths (LSPs)

Abstract

   This document describes procedures for building inter-area point-to-    multipoint (P2MP) segmented service label switched paths (LSPs) by    partitioning such LSPs into intra-area segments and using BGP as the    inter-area routing and Label Distribution Protocol (LDP).  Within    each IGP area, the intra-area segments are either carried over intra-    area P2MP LSPs, using P2MP LSP hierarchy, or instantiated using    ingress replication.  The intra-area P2MP LSPs may be signaled using    P2MP RSVP-TE or P2MP multipoint LDP (mLDP).  If ingress replication    is used within an IGP area, then (multipoint-to-point) LDP LSPs or    (point-to-point) RSVP-TE LSPs may be used in the IGP area.  The    applications/services that use such inter-area service LSPs may be    BGP Multicast VPN, Virtual Private LAN Service (VPLS) multicast, or    global table multicast over MPLS.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force    (IETF).  It represents the consensus of the IETF community.  It has    received public review and has been approved...