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
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Replaces | draft-raggarwa-mpls-seamless-mcast | ||
| Stream | IETF | ||
| Formats | plain text html pdf 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) | |
| 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
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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 ...................15
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