Multicast Virtual Private Network (MVPN): Using Bidirectional P-Tunnels
RFC 7582
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Type |
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RFC - Proposed Standard
(July 2015; No errata)
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Last updated |
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2015-10-14
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Replaces |
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draft-ietf-l3vpn-mvpn-bidir
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Stream |
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IETF
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Formats |
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plain text
pdf
html
bibtex
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WG state
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Submitted to IESG for Publication
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Document shepherd |
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Thomas Morin
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Shepherd write-up |
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Show
(last changed 2015-02-18)
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| IESG |
IESG state |
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RFC 7582 (Proposed Standard)
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Consensus Boilerplate |
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Yes
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Telechat date |
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Responsible AD |
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Alvaro Retana
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Send notices to |
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(None)
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| IANA |
IANA review state |
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IANA OK - No Actions Needed
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IANA action state |
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No IC
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Internet Engineering Task Force (IETF) E. Rosen
Request for Comments: 7582 Juniper Networks, Inc.
Updates: 6513, 6514, 6625 IJ. Wijnands
Category: Standards Track Cisco Systems, Inc.
ISSN: 2070-1721 Y. Cai
Microsoft
A. Boers
July 2015
Multicast Virtual Private Network (MVPN):
Using Bidirectional P-Tunnels
Abstract
A set of prior RFCs specify procedures for supporting multicast in
BGP/MPLS IP VPNs. These procedures allow customer multicast data to
travel across a service provider's backbone network through a set of
multicast tunnels. The tunnels are advertised in certain BGP
multicast auto-discovery routes, by means of a BGP attribute known
as the "Provider Multicast Service Interface (PMSI) Tunnel"
attribute. Encodings have been defined that allow the PMSI Tunnel
attribute to identify bidirectional (multipoint-to-multipoint)
multicast distribution trees. However, the prior RFCs do not provide
all the necessary procedures for using bidirectional tunnels to
support multicast VPNs. This document updates RFCs 6513, 6514, and
6625 by specifying those procedures. In particular, it specifies the
procedures for assigning customer multicast flows (unidirectional or
bidirectional) to specific bidirectional tunnels in the provider
backbone, for advertising such assignments, and for determining which
flows have been assigned to which tunnels.
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/rfc7582.
Rosen, et al. Standards Track [Page 1]
RFC 7582 MVPN: Using Bidirectional P-Tunnels July 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.
Rosen, et al. Standards Track [Page 2]
RFC 7582 MVPN: Using Bidirectional P-Tunnels July 2015
Table of Contents
1. Introduction ....................................................4
1.1. Terminology ................................................4
1.2. Overview ...................................................9
1.2.1. Bidirectional P-Tunnel Technologies ................10
1.2.2. Reasons for Using Bidirectional P-Tunnels ..........11
1.2.3. Knowledge of Group-to-RP and/or
Group-to-RPA Mappings ..............................12
1.2.4. PMSI Instantiation Methods .........................12
2. The All BIDIR-PIM Wildcard .....................................15
3. Using Bidirectional P-Tunnels ..................................15
3.1. Procedures Specific to the Tunneling Technology ...........15
3.1.1. BIDIR-PIM P-Tunnels ................................16
3.1.2. MP2MP LSPs .........................................17
3.2. Procedures Specific to the PMSI Instantiation Method ......17
3.2.1. Flat Partitioning ..................................17
3.2.1.1. When an S-PMSI Is a 'Match for
Transmission' .............................19
3.2.1.2. When an I-PMSI Is a 'Match for
Transmission' .............................20
3.2.1.3. When an S-PMSI Is a 'Match for Reception' .21
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