Inter-Area Point-to-Multipoint (P2MP) Segmented Label Switched Paths (LSPs)
RFC 7524
Document | Type |
RFC - Proposed Standard
(May 2015; No errata)
Updated by RFC 8534
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Authors | Yakov Rekhter , Eric Rosen , Rahul Aggarwal , Thomas Morin , Irene Grosclaude , Nicolai Leymann , Samir Saad | ||
Last updated | 2015-10-14 | ||
Replaces | draft-raggarwa-mpls-seamless-mcast | ||
Stream | Internent Engineering Task Force (IETF) | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Loa Andersson | ||
Shepherd write-up | Show (last changed 2014-09-27) | ||
IESG | IESG state | RFC 7524 (Proposed Standard) | |
Action Holders |
(None)
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Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | (None) | ||
IANA | IANA review state | Version Changed - Review Needed | |
IANA action state | RFC-Ed-Ack |
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 for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7524. Rekhter, et al. Standards Track [Page 1] RFC 7524 Inter-Area P2MP Segmented LSPs May 2015 Copyright Notice Copyright (c) 2015 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Rekhter, et al. Standards Track [Page 2] RFC 7524 Inter-Area P2MP Segmented LSPs May 2015 Table of Contents 1. Introduction ....................................................5 2. Specification of Requirements ...................................5 3. General Assumptions and Terminology .............................6 4. Inter-Area P2MP Segmented Next-Hop Extended Community ...........7 5. Discovering P2MP FEC of Inter-Area P2MP Service LSP .............8 5.1. BGP MVPN ...................................................8 5.1.1. Routes Originated by PE or ASBR .....................9 5.1.2. Routes Re-advertised by PE or ASBR ..................9 5.1.3. Inter-Area Routes ...................................9 5.2. LDP VPLS with BGP Auto-discovery or BGP VPLS ..............10 5.2.1. Routes Originated by PE or ASBR ....................10 5.2.2. Routes Re-advertised by PE or ASBR .................11 5.2.3. Inter-Area Routes ..................................11 5.3. Global Table Multicast over MPLS ..........................12 6. Egress PE/ASBR Signaling Procedures ............................13 6.1. Determining the Upstream ABR/PE/ASBR (Upstream Node) ......13 6.1.1. Upstream Node for MVPN or VPLS .....................13 6.1.2. Upstream Node for Global Table Multicast ...........14 6.2. Originating a Leaf A-D Route ..............................15 6.2.1. Leaf A-D Route for MVPN and VPLS ...................15Show full document text