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)