Resource Reservation Protocol (RSVP) Message Formats for Label Switched Path (LSP) Attributes Objects
RFC 6510
Document | Type | RFC - Proposed Standard (February 2012; No errata) | |
---|---|---|---|
Authors | George Swallow , Lou Berger | ||
Last updated | 2015-10-14 | ||
Replaces | draft-berger-ccamp-attribute-bnf | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6510 (Proposed Standard) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Adrian Farrel | ||
IESG note | Deborah Brungard (dbrungard@att.com) is the Document Shepherd. | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) L. Berger Request for Comments: 6510 LabN Updates: 4875, 5420 G. Swallow Category: Standards Track Cisco ISSN: 2070-1721 February 2012 Resource Reservation Protocol (RSVP) Message Formats for Label Switched Path (LSP) Attributes Objects Abstract Multiprotocol Label Switching (MPLS) Label Switched Paths (LSPs) established using the Resource Reservation Protocol Traffic Engineering (RSVP-TE) extensions may be signaled with a set of LSP- specific attributes. These attributes may be carried in both Path and Resv messages. This document specifies how LSP attributes are to be carried in RSVP Path and Resv messages using the Routing Backus- Naur Form and clarifies related Resv message formats. This document updates RFC 4875 and RFC 5420. 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/rfc6510. 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 Berger & Swallow Standards Track [Page 1] RFC 6510 RSVP Message Formats for LSP Attributes February 2012 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 ....................................................2 1.1. Conventions Used in This Document ..........................3 2. Path Messages ...................................................3 2.1. Path Message Format ........................................3 3. Resv Messages ...................................................4 3.1. Resv Message Format -- Per LSP Operational Status ..........5 3.2. Resv Message Format -- Per S2L Operational Status ..........6 3.2.1. Compatibility .......................................6 4. Security Considerations .........................................6 5. Acknowledgments .................................................7 6. References ......................................................7 6.1. Normative References .......................................7 6.2. Informative References .....................................7 1. Introduction Signaling in support of Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) point-to-point Label Switched Paths (LSPs) is defined in [RFC3209] and [RFC3473]. [RFC4875] defines signaling support for point-to-multipoint (P2MP) Traffic Engineering (TE) LSPs. Two LSP Attributes objects are defined in [RFC5420]. These objects may be used to provide additional information related to how an LSP should be set up when carried in a Path message and, when carried in a Resv message, how an LSP has been established. The definition of the objects includes a narrative description of related message formats (see Section 9 of [RFC5420]). This definition does not provide the related Routing Backus-Naur Form (BNF) [RFC5511] that is typically used to define how messages are to be constructed using RSVP objects. The current message format description has led to the open question of how the LSP Attributes objects are to be processed in Resv messages of P2MP LSPs (which are defined in [RFC4875]). This document provides the BNF for Path and Resv messages carrying the LSP Attributes object. The definition clarifies how the objects are to be carried for all LSP types. Both Path and Resv message BNF is provided for completeness. Berger & Swallow Standards Track [Page 2] RFC 6510 RSVP Message Formats for LSP Attributes February 2012 This document presents the related RSVP message formats as modified by [RFC5420]. This document modifies formats defined in [RFC3209],Show full document text