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Mechanisms for Optimizing Link Aggregation Group (LAG) and Equal-Cost Multipath (ECMP) Component Link Utilization in Networks (RFC7424) Disclosure Number: IPCOM000240239D
Original Publication Date: 2015-Jan-01
Included in the Prior Art Database: 2015-Jan-15
Document File: 58 page(s) / 61K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Krishnan: AUTHOR [+4]


Networks extensively use link aggregation groups (LAGs) [802.1AX] and equal-cost multipaths (ECMPs) [RFC2991] as techniques for capacity scaling. For the problems addressed by this document, network traffic can be predominantly categorized into two traffic types: long-lived large flows and other flows. These other flows, which include long-lived small flows, short-lived small flows, and short- lived large flows, are referred to as "small flows" in this document. Long-lived large flows are simply referred to as "large flows".

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Internet Engineering Task Force (IETF)                       R. Krishnan Request for Comments: 7424                        Brocade Communications Category: Informational                                          L. Yong ISSN: 2070-1721                                               Huawei USA                                                              A. Ghanwani                                                                     Dell                                                                    N. So                                                            Vinci Systems                                                            B. Khasnabish                                                          ZTE Corporation                                                             January 2015

        Mechanisms for Optimizing Link Aggregation Group (LAG) and    Equal-Cost Multipath (ECMP) Component Link Utilization in Networks


   Demands on networking infrastructure are growing exponentially due to    bandwidth-hungry applications such as rich media applications and    inter-data-center communications.  In this context, it is important    to optimally use the bandwidth in wired networks that extensively use    link aggregation groups and equal-cost multipaths as techniques for    bandwidth scaling.  This document explores some of the mechanisms    useful for achieving this.

Status of This Memo

   This document is not an Internet Standards Track specification; it is    published for informational purposes.

   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).  Not all documents    approved by the IESG are a candidate for any level of Internet    Standard; see 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

 Krishnan, et al.              Informational                     [Page 1]
 RFC 7424       Optimizing Load Distribution over LAG/ECMP   January 2015

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