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Clarifying Procedures for Establishing BFD Sessions for MPLS Label Switched Paths (LSPs) (RFC7726) Disclosure Number: IPCOM000245079D
Original Publication Date: 2016-Jan-01
Included in the Prior Art Database: 2016-Feb-08
Document File: 14 page(s) / 14K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

V. Govindan: AUTHOR [+5]


[RFC5884] defines the procedures to bootstrap and maintain BFD sessions for an using a Label Switched Path (LSP) ping. While Section 4 of [RFC5884] specifies that multiple BFD sessions can be established for an tuple, the procedures to bootstrap and maintain multiple BFD sessions concurrently over an are not clearly specified. Additionally, the procedures of removing BFD sessions bootstrapped on the egress Label Switching Router (LSR) are unclear. This document provides those clarifications without deviating from the principles outlined in [RFC5884].

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Internet Engineering Task Force (IETF)                       V. Govindan Request for Comments: 7726                                  K. Rajaraman Updates: 5884                                              Cisco Systems Category: Standards Track                                      G. Mirsky ISSN: 2070-1721                                                 Ericsson                                                                 N. Akiya                                                      Big Switch Networks                                                                S. Aldrin                                                                   Google                                                             January 2016

         Clarifying Procedures for Establishing BFD Sessions for                     MPLS Label Switched Paths (LSPs)


   This document clarifies the procedures for establishing, maintaining,    and removing multiple, concurrent BFD (Bidirectional Forwarding    Detection) sessions for a given <MPLS LSP, FEC> as described in RFC    5884.

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

 Govindan, et al.             Standards Track                    [Page 1]
 RFC 7726               Clarifications to RFC 5884           January 2016

 Copyright Notice

   Copyright (c) 2016 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.  Code Components extracted from this document must    include Simplified BSD License tex...