[PCN] I-D Action:draft-ietf-pcn-baseline-encoding-06.txt
Internet-Drafts@ietf.org Fri, 04 September 2009 19:30 UTC
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Subject: [PCN] I-D Action:draft-ietf-pcn-baseline-encoding-06.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories. This draft is a work item of the Congestion and Pre-Congestion Notification Working Group of the IETF. Title : Baseline Encoding and Transport of Pre-Congestion Information Author(s) : T. Moncaster, et al. Filename : draft-ietf-pcn-baseline-encoding-06.txt Pages : 17 Date : 2009-09-04 The objective of the pre-congestion notification (PCN) architecture is to protect the QoS of inelastic flows within a Diffserv domain. It achieves this by marking packets belonging to PCN-flows when the rate of traffic exceeds certain configured thresholds on links in the domain. These marks can then be evaluated to determine how close the domain is to being congested. This document specifies how such marks are encoded into the IP header by redefining the Explicit Congestion Notification (ECN) codepoints within such domains. The baseline encoding described here provides only two PCN encoding states: not- marked and PCN-marked. Future extensions to this encoding may be needed in order to provide more than one level of marking severity. A URL for this Internet-Draft is: http://www.ietf.org/internet-drafts/draft-ietf-pcn-baseline-encoding-06.txt Internet-Drafts are also available by anonymous FTP at: ftp://ftp.ietf.org/internet-drafts/ Below is the data which will enable a MIME compliant mail reader implementation to automatically retrieve the ASCII version of the Internet-Draft.
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