I-D Action:draft-ietf-pcn-marking-behaviour-04.txt
Internet-Drafts@ietf.org Thu, 25 June 2009 15:30 UTC
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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 : Metering and marking behaviour of PCN-nodes
Author(s) : P. Eardley
Filename : draft-ietf-pcn-marking-behaviour-04.txt
Pages : 23
Date : 2009-06-25
The objective of Pre-Congestion Notification (PCN) is to protect the
quality of service (QoS) of inelastic flows within a Diffserv domain,
in a simple, scalable, and robust fashion. This document specifies
the two metering and marking behaviours of PCN-nodes. Threshold-
metering and -marking marks all PCN-packets if the rate of PCN-
traffic is greater than a configured rate ("PCN-threshold-rate").
Excess-traffic-metering and -marking marks a proportion of PCN-
packets, such that the amount marked equals the rate of PCN-traffic
in excess of a configured rate ("PCN-excess-rate"). The level of
marking allows PCN-boundary-nodes to make decisions about whether to
admit or terminate PCN-flows.
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