BGP Encodings and Procedures for Multicast in MPLS/BGP IP VPNs
RFC 6514
Internet Engineering Task Force (IETF) R. Aggarwal
Request for Comments: 6514 Juniper Networks
Category: Standards Track E. Rosen
ISSN: 2070-1721 Cisco Systems, Inc.
T. Morin
France Telecom - Orange
Y. Rekhter
Juniper Networks
February 2012
BGP Encodings and Procedures for Multicast in MPLS/BGP IP VPNs
Abstract
This document describes the BGP encodings and procedures for
exchanging the information elements required by Multicast in MPLS/BGP
IP VPNs, as specified in RFC 6513.
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/rfc6514.
Copyright Notice
Copyright (c) 2012 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
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described in the Simplified BSD License.
Aggarwal, et al. Standards Track [Page 1]
RFC 6514 BGP Encodings and Procedures for MVPNs February 2012
Table of Contents
1. Introduction ....................................................4
2. Specification of Requirements ...................................4
3. Terminology .....................................................4
4. MCAST-VPN NLRI ..................................................5
4.1. Intra-AS I-PMSI A-D Route ...................................6
4.2. Inter-AS I-PMSI A-D Route ...................................7
4.3. S-PMSI A-D Route ............................................7
4.4. Leaf A-D Route ..............................................8
4.5. Source Active A-D Route .....................................9
4.6. C-Multicast Route ..........................................10
5. PMSI Tunnel Attribute ..........................................10
6. Source AS Extended Community ...................................13
7. VRF Route Import Extended Community ............................14
8. PE Distinguisher Labels Attribute ..............................15
9. MVPN Auto-Discovery/Binding ....................................16
9.1. MVPN Auto-Discovery/Binding - Intra-AS Operations ..........16
9.1.1. Originating Intra-AS I-PMSI A-D Routes .................16
9.1.2. Receiving Intra-AS I-PMSI A-D Routes ...................19
9.2. MVPN Auto-Discovery/Binding - Inter-AS Operations ..........20
9.2.1. Originating Inter-AS I-PMSI A-D Routes .................22
9.2.2. When Not to Originate Inter-AS I-PMSI A-D Routes .......23
9.2.3. Propagating Inter-AS I-PMSI A-D Routes .................23
9.2.3.1. Propagating Inter-AS I-PMSI A-D Routes - Overview ..23
9.2.3.2. Inter-AS I-PMSI A-D Route Received via EBGP ........24
9.2.3.2.1. Originating Leaf A-D Route into EBGP ...........25
9.2.3.3. Leaf A-D Route Received via EBGP ...................26
9.2.3.4. Inter-AS I-PMSI A-D Route Received via IBGP ........27
9.2.3.4.1. Originating Leaf A-D Route into IBGP ...........28
9.2.3.5. Leaf A-D Route Received via IBGP ...................29
9.2.3.6. Optimizing Bandwidth by IP Filtering on ASBRs ......30
10. Non-Congruent Unicast and Multicast Connectivity ..............30
11. Exchange of C-Multicast Routing Information among PEs .........32
11.1. Originating C-Multicast Routes by a PE ....................32
11.1.1. Originating Routes: PIM as the C-Multicast Protocol ...32
11.1.1.1. Originating Source Tree Join C-Multicast Route ....33
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