The IESG has approved the following document: - 'Byte and Packet Congestion Notification' (draft-ietf-tsvwg-byte-pkt-congest-12.txt) as Best Current Practice This document is the product of the Transport Area Working Group. The IESG contact persons are Martin Stiemerling and Spencer Dawkins. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-tsvwg-byte-pkt-congest/ Technical Summary This document provides recommendations of best current practice for dropping or marking packets using active queue management (AQM) such as random early detection (RED) or pre-congestion notification (PCN). We give three strong recommendations: (1) packet size should be taken into account when transports read and respond to congestion indications, (2) packet size should not be taken into account when network equipment creates congestion signals (marking, dropping), and therefore (3) the byte-mode packet drop variant of the RED AQM algorithm that drops fewer small packets should not be used. This memo updates RFC 2309 to deprecate deliberate preferential treatment of small packets in AQM algorithms. Working Group Summary There was consensus to publish this as a WG document and agreement at IETF-82 that the document was now complete. Since then there have been a number of revisions to address WG feedback. Document Quality Annexe A summarises a survey by the original authors showing deployment of the techniques by router vendors. The recommendations are thought to be in line with that of IETF groups, such as TSVWG, TCPM, PCN, and are considered good advice for use in the general Internet. Personnel The Document Shepherd Gorry Fairhurst (gorry@erg.abdn.ac.uk). The responsible Area Director is Martin Stiemerling (martin.stiemerling@neclab.eu). RFC Editor Note Please change the Updates header: OLD Updates: 2309 (if approved) NEW: Updates: 2309 and BCP 41 (if approved)
