Multipoint LDP In-Band Signaling for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths
RFC 6826
Document | Type |
RFC - Proposed Standard
(January 2013; No errata)
Updated by RFC 7438
|
|
---|---|---|---|
Authors | IJsbrand Wijnands , Toerless Eckert , Nicolai Leymann , Maria Napierala | ||
Last updated | 2015-10-14 | ||
Replaces | draft-wijnands-mpls-mldp-in-band-signaling | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6826 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
IESG note | Loa Andersson (loa@pi.nu) is the document shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) IJ. Wijnands, Ed. Request for Comments: 6826 T. Eckert Category: Standards Track Cisco Systems, Inc. ISSN: 2070-1721 N. Leymann Deutsche Telekom M. Napierala AT&T Labs January 2013 Multipoint LDP In-Band Signaling for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths Abstract Consider an IP multicast tree, constructed by Protocol Independent Multicast (PIM), that needs to pass through an MPLS domain in which Multipoint LDP (mLDP) point-to-multipoint and/or multipoint-to- multipoint Labels Switched Paths (LSPs) can be created. The part of the IP multicast tree that traverses the MPLS domain can be instantiated as a multipoint LSP. When a PIM Join message is received at the border of the MPLS domain, information from that message is encoded into mLDP messages. When the mLDP messages reach the border of the next IP domain, the encoded information is used to generate PIM messages that can be sent through the IP domain. The result is an IP multicast tree consisting of a set of IP multicast sub-trees that are spliced together with a multipoint LSP. This document describes procedures regarding how IP multicast trees are spliced together with multipoint LSPs. 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/rfc6826. Wijnands, et al. Standards Track [Page 1] RFC 6826 In-Band Signaling with mLDP January 2013 Copyright Notice Copyright (c) 2013 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. Conventions Used in This Document . . . . . . . . . . . . 3 1.2. Terminology . . . . . . . . . . . . . . . . . . . . . . . 3 2. In-Band Signaling for MP LSPs . . . . . . . . . . . . . . . . 4 2.1. Transiting Unidirectional IP Multicast Shared Trees . . . 6 2.2. Transiting IP Multicast Source Trees . . . . . . . . . . . 6 2.3. Transiting IP Multicast Bidirectional Trees . . . . . . . 7 3. LSP Opaque Encodings . . . . . . . . . . . . . . . . . . . . . 8 3.1. Transit IPv4 Source TLV . . . . . . . . . . . . . . . . . 8 3.2. Transit IPv6 Source TLV . . . . . . . . . . . . . . . . . 8 3.3. Transit IPv4 Bidir TLV . . . . . . . . . . . . . . . . . . 9 3.4. Transit IPv6 Bidir TLV . . . . . . . . . . . . . . . . . . 9 4. Security Considerations . . . . . . . . . . . . . . . . . . . 10 5. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 10 6. References . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.1. Normative References . . . . . . . . . . . . . . . . . . . 10 6.2. Informative References . . . . . . . . . . . . . . . . . . 10 7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 11 Wijnands, et al. Standards Track [Page 2] RFC 6826 In-Band Signaling with mLDP January 2013 1. Introduction The mLDP (Multipoint LDP) [RFC6388] specification describes mechanisms for creating point-to-multipoint (P2MP) and multipoint-to- multipoint (MP2MP) LSPs (Label Switched Paths). These LSPs are typically used for transporting end-user multicast packets. However, the mLDP specification does not provide any rules for associating particular end-user multicast packets with any particular LSP. OtherShow full document text