Bidirectional Forwarding Detection (BFD) on Link Aggregation Group (LAG) Interfaces (RFC7130)
Original Publication Date: 2014-Feb-01
Included in the Prior Art Database: 2014-Feb-14
Internet Society Requests For Comment (RFCs)
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.
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 http://www.rfc-editor.org/info/rfc7130.
Bhatia, et al. Standards Track [Page 1]
RFC 7130 BFD for LAG Interfaces February 2014
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