Cisco Systems' Solution for Multicast in BGP/MPLS IP VPNs
RFC 6037
Document | Type |
RFC - Historic
(October 2010; No errata)
Was draft-rosen-vpn-mcast (rtg)
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Authors | IJsbrand Wijnands , Eric Rosen , Yiqun Cai | ||
Last updated | 2015-10-14 | ||
Stream | Independent Submission | ||
Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
Stream | ISE state | (None) | |
Consensus Boilerplate | Unknown | ||
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6037 (Historic) | |
Action Holders |
(None)
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Telechat date | |||
Responsible AD | Adrian Farrel | ||
Send notices to | rfc-ise@rfc-editor.org |
Independent Submission E. Rosen, Ed. Request for Comments: 6037 Y. Cai, Ed. Category: Historic I. Wijnands ISSN: 2070-1721 Cisco Systems, Inc. October 2010 Cisco Systems' Solution for Multicast in BGP/MPLS IP VPNs Abstract This document describes the MVPN (Multicast in BGP/MPLS IP VPNs) solution designed and deployed by Cisco Systems. The procedures specified in this document are largely a subset of the generalized MVPN framework recently standardized by the IETF. However, as the deployment of the procedures specified herein predates the publication of IETF standards (in some cases by over five years), an implementation based on these procedures differs in some respects from a fully standards-compliant implementation. These differences are pointed out in the document. Status of This Memo This document is not an Internet Standards Track specification; it is published for the historical record. This document defines a Historic Document for the Internet community. This is a contribution to the RFC Series, independently of any other RFC stream. The RFC Editor has chosen to publish this document at its discretion and makes no statement about its value for implementation or deployment. Documents approved for publication by the RFC Editor are not a candidate for any level of Internet Standard; see 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/rfc6037. Copyright Notice Copyright (c) 2010 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. Rosen, et al. Historic [Page 1] RFC 6037 Cisco Systems' MVPN Solution October 2010 Table of Contents 1. Introduction ....................................................3 1.1. Specification of Requirements ..............................3 1.2. Scaling Multicast State Information in the Network Core ....3 1.3. Overview ...................................................4 2. Multicast VRFs ..................................................6 3. Multicast Domains ...............................................7 3.1. Model of Operation .........................................7 4. Multicast Tunnels ...............................................7 4.1. Ingress PEs ................................................8 4.2. Egress PEs .................................................8 4.3. Tunnel Destination Address(es) .............................8 4.4. Auto-Discovery .............................................8 4.4.1. MDT-SAFI ...........................................10 4.5. Which PIM Variant to Use ..................................10 4.6. Inter-AS MDT Construction .................................11 4.6.1. The PIM MVPN Join Attribute ........................11 4.6.1.1. Definition ................................11 4.6.1.2. Usage .....................................12 4.7. Encapsulation in GRE ......................................13 4.8. MTU .......................................................14 4.9. TTL .......................................................14 4.10. Differentiated Services ..................................14 4.11. Avoiding Conflict with Internet Multicast ................14 5. The PIM C-Instance and the MT ..................................15 5.1. PIM C-Instance Control Packets ............................15 5.2. PIM C-Instance RPF Determination ..........................15 5.2.1. Connector Attribute ................................16 6. Data MDT: Optimizing Flooding ..................................17 6.1. Limitation of Multicast Domain ............................17 6.2. Signaling Data MDTs .......................................17 6.3. Use of SSM for Data MDTs ..................................19 7. Packet Formats and Constants ...................................20 7.1. MDT TLV ...................................................20 7.2. MDT Join TLV for IPv4 Streams .............................20 7.3. MDT Join TLV for IPv6 Streams .............................21 7.4. Multiple MDT Join TLVs per Datagram .......................22Show full document text