BCP 41, RFC 7141 on Byte and Packet Congestion Notification
rfc-editor@rfc-editor.org Wed, 26 February 2014 19:13 UTC
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Subject: BCP 41, RFC 7141 on Byte and Packet Congestion Notification
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A new Request for Comments is now available in online RFC libraries.
BCP 41
RFC 7141
Title: Byte and Packet Congestion Notification
Author: B. Briscoe, J. Manner
Status: Best Current Practice
Stream: IETF
Date: February 2014
Mailbox: bob.briscoe@bt.com,
jukka.manner@aalto.fi
Pages: 48
Characters: 123953
Updates: 2309
I-D Tag: draft-ietf-tsvwg-byte-pkt-congest-12.txt
URL: http://www.rfc-editor.org/rfc/rfc7141.txt
This document provides recommendations of best current practice for
dropping or marking packets using any active queue management (AQM)
algorithm, including random early detection (RED), BLUE, pre-
congestion notification (PCN) and newer schemes such as CoDel
(Controlled Delay) and PIE (Proportional Integral controller
Enhanced). We give three strong recommendations: (1) packet size
should be taken into account when transports detect 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) in the specific case of RED, the byte-
mode packet drop variant 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.
This document is a product of the Transport Area Working Group Working Group of the IETF.
BCP: This document specifies an Internet Best Current Practices for the
Internet Community, and requests discussion and suggestions for
improvements. Distribution of this memo is unlimited.
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