Characterization Guidelines for Active Queue Management (AQM) (RFC7928)
Original Publication Date: 2016-Jul-01
Included in the Prior Art Database: 2016-Jul-31
Internet Society Requests For Comment (RFCs)
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.
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 http://www.rfc-editor.org/info/rfc7928.
Kuhn, et al. Informational [Page 1]
RFC 7928 AQM Characterization Guidelines July 2016
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