Last Call: <draft-ietf-pcn-encoding-comparison-08.txt> (Overview of Pre-Congestion Notification Encoding) to Informational RFC
The IESG <iesg-secretary@ietf.org> Thu, 09 February 2012 22:52 UTC
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From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Subject: Last Call: <draft-ietf-pcn-encoding-comparison-08.txt> (Overview of Pre-Congestion Notification Encoding) to Informational RFC
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Date: Thu, 09 Feb 2012 14:52:06 -0800
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The IESG has received a request from the Congestion and Pre-Congestion Notification WG (pcn) to consider the following document: - 'Overview of Pre-Congestion Notification Encoding' <draft-ietf-pcn-encoding-comparison-08.txt> as an Informational RFC The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2012-02-23. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract The objective of Pre-Congestion Notification (PCN) is to protect the quality of service (QoS) of inelastic flows within a Diffserv domain. On every link in the PCN domain, the overall rate of the PCN-traffic is metered, and PCN-packets are appropriately marked when certain configured rates are exceeded. Egress nodes provide decision points with information about the PCN-marks of PCN-packets which allows them to take decisions about whether to admit or block a new flow request, and to terminate some already admitted flows during serious pre- congestion. The PCN Working Group explored a number of approaches for encoding this pre-congestion information into the IP header. This document provides details of all those approaches along with an explanation of the constraints that had to be met by any solution. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-pcn-encoding-comparison/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-pcn-encoding-comparison/ No IPR declarations have been submitted directly on this I-D.