A New Internet-Draft is available from the on-line Internet-Drafts
directories.
Title : Re-ECN: Adding Accountability for Causing Congestion to TCP/IP
Author(s) : B. Briscoe, A. Jacquet, T. Moncaster, A. Smith
Filename : draft-briscoe-tsvwg-re-ecn-tcp-06.txt
Pages : 90
Date : 2008-8-4
This document introduces a new protocol for explicit congestion
notification (ECN), termed re-ECN, which can be deployed
incrementally around unmodified routers. It enbales the 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. The protocol works
by arranging an extended ECN field in each packet so that, as it
crosses any interface in an internetwork, it will carry a truthful
prediction of congestion on the remainder of its path. The purpose
of this document is to specify the re-ECN protocol at the IP layer
and to give guidelines on any consequent changes required to
transport protocols. It includes the changes required to TCP both as
an example and as a specification. It 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 set the extended ECN field honestly.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-briscoe-tsvwg-re-ecn-tcp-06.txt
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