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RSVP-TE Extensions for Associated Bidirectional Label Switched Paths (LSPs) (RFC7551) Disclosure Number: IPCOM000241592D
Original Publication Date: 2015-May-01
Included in the Prior Art Database: 2015-May-14
Document File: 40 page(s) / 44K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

F. Zhang: AUTHOR [+5]


The MPLS Transport Profile (MPLS-TP) requirements document [RFC5654] specifies that MPLS-TP MUST support associated bidirectional point- to-point Label Switched Paths (LSPs). These requirements are given in Section 2.1 ("General Requirements") of that document and are partially rephrased below:

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Internet Engineering Task Force (IETF)                     F. Zhang, Ed. Request for Comments: 7551                                        Huawei Category: Standards Track                                        R. Jing ISSN: 2070-1721                                            China Telecom                                                           R. Gandhi, Ed.                                                            Cisco Systems                                                                 May 2015

                            RSVP-TE Extensions         for Associated Bidirectional Label Switched Paths (LSPs)


   This document describes Resource Reservation Protocol (RSVP)    extensions to bind two point-to-point unidirectional Label Switched    Paths (LSPs) into an associated bidirectional LSP.  The association    is achieved by defining new Association Types for use in ASSOCIATION    and in Extended ASSOCIATION Objects.  One of these types enables    independent provisioning of the associated bidirectional LSPs on both    sides, while the other enables single-sided provisioning.  The    REVERSE_LSP Object is also defined to enable a single endpoint to    trigger creation of the reverse LSP and to specify parameters of the    reverse LSP in the single-sided provisioning case.

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

Zhang, et al.                Standards Track                    [Page 1]
 RFC 7551          RSVP-TE Extensions for Associated LSP         May 2015

 Copyright Notice

   Copyright (c) 2015 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    ( 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.  Co...