A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : Performance evaluation of termination in CL-algorithm
Author(s) : D. Satoh, et al.
Filename : draft-satoh-pcn-performance-termination-00.txt
Pages : 12
Date : 2009-07-03
Pre-congestion notification (PCN) gives information to support
admission control and flow termination in order to protect the
quality of service (QoS) of inelastic flows. [I-D.taylor-cl-edge-
behaviour] describes one boundary node behaviours for three-state
measurement-based load control, known informally as CL [I-D.briscoe-
tsvwg-cl-phb]. In [I-D.taylor-cl-edge-behaviour], flow termination
is required if excess-traffic-marked packets were observed and the
end of one measurement period MUST be the beginning of the next one,
independently of current flow conditions. According to this
termination, PCN-flows in some ingress-egress (IE) pairs may be
terminated during measurement period of other IE pairs unless round-
trip times (RTT) of all the IE pairs are the same. We illustrate
that this can lead to over-termination. Our simulation confirms that
accuracy of termination is improved when no PCN-flows in some IE
pairs are terminated during measurement period of other IE pairs.
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