A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Re-ECN: A Framework for adding Congestion
Accountability to TCP/IP
Author(s) : Bob Briscoe
Arnaud Jacquet
Toby Moncaster
Alan Smith
Filename : draft-briscoe-conex-re-ecn-motiv-02.txt
Pages : 53
Date : 2013-07-15
Abstract:
This document describes a framework for using a new protocol called
re-ECN (re-inserted explicit congestion notification), which can be
deployed incrementally around unmodified routers. Re-ECN allows
accurate congestion monitoring throughout the network thus enabling
the upstream party at any trust boundary in the internetwork to be
held responsible for the congestion they cause, or allow to be
caused. So, networks can introduce straightforward accountability
for congestion and policing mechanisms for incoming traffic from end-
customers or from neighbouring network domains. As well as giving
the motivation for re-ECN this document also gives examples of
mechanisms that can use the protocol to ensure data sources respond
correctly to congestion. And it describes example mechanisms that
ensure the dominant selfish strategy of both network domains and end-
points will be to use the protocol honestly.
Note concerning Intended Status: If this draft were ever published as
an RFC it would probably have historic status. There is limited
space in the IP header, so re-ECN had to compromise by requiring the
receiver to be ECN-enabled otherwise the sender could not use re-ECN.
Re-ECN was a precursor to chartering of the IETF's Congestion
Exposure (ConEx) working group, but during chartering there were
still too few ECN receivers enabled, therefore it was decided to
pursue other compromises in order to fit a similar capability into
the IP header.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-briscoe-conex-re-ecn-motiv
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-briscoe-conex-re-ecn-motiv-02
A diff from the previous version is available at:
http://www.ietf.org/rfcdiff?url2=draft-briscoe-conex-re-ecn-motiv-02
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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