Browse Prior Art Database

Characterization Guidelines for Active Queue Management (AQM) (RFC7928) Disclosure Number: IPCOM000247053D
Original Publication Date: 2016-Jul-01
Included in the Prior Art Database: 2016-Jul-31
Document File: 74 page(s) / 90K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

N. Kuhn: AUTHOR [+6]


Active Queue Management (AQM) addresses the concerns arising from using unnecessarily large and unmanaged buffers to improve network and application performance, such as those presented in Section 1.2 of the AQM recommendations document [RFC7567]. Several AQM algorithms have been proposed in the past years, most notably Random Early Detection (RED) [FLOY1993], BLUE [FENG2002], Proportional Integral controller (PI) [HOLLO2001], and more recently, Controlled Delay (CoDel) [CODEL] and Proportional Integral controller Enhanced (PIE) [AQMPIE]. In general, these algorithms actively interact with the Transmission Control Protocol (TCP) and any other transport protocol that deploys a congestion control scheme to manage the amount of data they keep in the network. The available buffer space in the routers and switches should be large enough to accommodate the short-term buffering requirements. AQM schemes aim at reducing buffer occupancy, and therefore the end-to-end delay. Some of these algorithms, notably RED, have also been widely implemented in some network devices. However, the potential benefits of the RED scheme have not been realized since RED is reported to be usually turned off.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 3% of the total text.

Internet Engineering Task Force (IETF)                      N. Kuhn, Ed. Request for Comments: 7928                        CNES, Telecom Bretagne Category: Informational                                P. Natarajan, Ed. ISSN: 2070-1721                                            Cisco Systems                                                          N. Khademi, Ed.                                                       University of Oslo                                                                   D. Ros                                            Simula Research Laboratory AS                                                                July 2016

      Characterization Guidelines for Active Queue Management (AQM)


   Unmanaged large buffers in today's networks have given rise to a slew    of performance issues.  These performance issues can be addressed by    some form of Active Queue Management (AQM) mechanism, optionally in    combination with a packet-scheduling scheme such as fair queuing.    This document describes various criteria for performing    characterizations of AQM schemes that can be used in lab testing    during development, prior to deployment.

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 7841.

   Information about the current status of this document, any errata,    and how to provide feedback on it may be obtained at

Kuhn, et al.                  Informational                     [Page 1]
 RFC 7928             AQM Characterization Guidelines           July 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 r...