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Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces (RFC7130) Disclosure Number: IPCOM000234904D
Original Publication Date: 2014-Feb-01
Included in the Prior Art Database: 2014-Feb-14
Document File: 22 page(s) / 21K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

M. Bhatia: AUTHOR [+10]


The Bidirectional Forwarding Detection (BFD) protocol [RFC5880] provides a mechanism to detect faults in the bidirectional path between two forwarding engines, including interfaces, data links, and to the extent possible the forwarding engines themselves, with potentially very low latency. The BFD protocol also provides a fast mechanism for detecting communication failures on any data links and the protocol can run over any media and at any protocol layer.

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Internet Engineering Task Force (IETF)                    M. Bhatia, Ed. Request for Comments: 7130                                Alcatel-Lucent Category: Standards Track                                   M. Chen, Ed. ISSN: 2070-1721                                      Huawei Technologies                                                          S. Boutros, Ed.                                                     M. Binderberger, Ed.                                                            Cisco Systems                                                             J. Haas, Ed.                                                         Juniper Networks                                                            February 2014

               Bidirectional Forwarding Detection (BFD) on                 Link Aggregation Group (LAG) Interfaces


   This document defines a mechanism to run Bidirectional Forwarding    Detection (BFD) on Link Aggregation Group (LAG) interfaces.  It does    so by running an independent Asynchronous mode BFD session on every    LAG member link.

   This mechanism allows the verification of member link continuity,    either in combination with, or in absence of, Link Aggregation    Control Protocol (LACP).  It provides a shorter detection time than    what LACP offers.  The continuity check can also cover elements of    Layer 3 (L3) bidirectional forwarding.

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

 Bhatia, et al.               Standards Track                    [Page 1]
 RFC 7130                 BFD for LAG Interfaces            February 2014

 Copyright Notice

   Copyright (c) 2014 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    ...