Wildcards in Multicast VPN Auto-Discovery Routes
RFC 6625
Document | Type |
RFC - Proposed Standard
(May 2012; No errata)
Updates RFC 6514
|
|
---|---|---|---|
Last updated | 2015-10-14 | ||
Replaces | draft-rekhter-mvpn-wildcard-spmsi, draft-rosen-l3vpn-mvpn-wldcds-cmbind, draft-rosen-l3vpn-mvpn-wildcards | ||
Stream | IETF | ||
Formats | plain text pdf html bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6625 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Stewart Bryant | ||
IESG note | Ben Niven-Jenkins (ben@niven-jenkins.co.uk) is the Document Shepherd | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) E. Rosen, Ed. Request for Comments: 6625 Cisco Systems, Inc. Updates: 6514 Y. Rekhter, Ed. Category: Standards Track Juniper Networks, Inc. ISSN: 2070-1721 W. Henderickx Alcatel-Lucent R. Qiu Huawei May 2012 Wildcards in Multicast VPN Auto-Discovery Routes Abstract In Multicast Virtual Private Networks (MVPNs), customer multicast flows are carried in "tunnels" through a service provider's network. The base specifications for MVPN define BGP multicast VPN "auto- discovery routes" and specify how to use an auto-discovery route to advertise the fact that an individual customer multicast flow is being carried in a particular tunnel. However, those specifications do not provide a way to specify, in a single such route, that multiple customer flows are being carried in a single tunnel. Those specifications also do not provide a way to advertise that a particular tunnel is to be used by default to carry all customer flows, except in the case where that tunnel is joined by all the provider edge routers of the MVPN. This document eliminates these restrictions by specifying the use of "wildcard" elements in the customer flow identifiers. With wildcard elements, a single auto- discovery route can refer to multiple customer flows or even to all customer flows. 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/rfc6625. Rosen, et al. Standards Track [Page 1] RFC 6625 Wildcards in MVPN A-D Routes May 2012 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 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. Table of Contents 1. Introduction ....................................................3 1.1. Terminology ................................................3 1.2. Wildcards in S-PMSI A-D Routes .............................5 1.3. Use Cases ..................................................5 2. Encoding of Wildcards ...........................................7 3. Finding the Matching S-PMSI A-D Route ...........................8 3.1. Finding the Match for Data Transmission ....................8 3.2. Finding the Match for Data Reception .......................9 3.2.1. Finding the Match for (C-S,C-G) .....................9 3.2.2. Finding the Wildcard Match for (C-*,C-G) ............9 4. Procedures for S-PMSI A-D Routes with Wildcards ................10 4.1. Procedures for All Kinds of Wildcards .....................10 4.2. Procedures for (C-*,C-G) S-PMSI A-D Routes ................11 4.3. Procedures for (C-S,C-*) S-PMSI A-D Routes ................12 4.4. Procedures for (C-*,C-*) S-PMSI A-D Routes ................13 5. Security Considerations ........................................15 6. Acknowledgments ................................................15 7. Normative References ...........................................15 Rosen, et al. Standards Track [Page 2] RFC 6625 Wildcards in MVPN A-D Routes May 2012 1. Introduction In Multicast Virtual Private Networks (MVPNs), customer multicast flows are carried in tunnels through a service provider's network. The base specifications for MVPN define BGP multicast VPN "auto-discovery routes" and specify how to use an auto-discoveryShow full document text