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 : Requirements for Signaling of (Pre-) Congestion Information in a DiffServ Domain
Author(s) : G. Karagiannis, et al.
Filename : draft-ietf-pcn-signaling-requirements-03.txt
Pages : 7
Date : 2011-04-05
Precongestion notification (PCN) is a means for protecting quality of
service for inelastic traffic admitted to a Diffserv domain. The
overall PCN architecture is described in RFC 5559. This memo
describes the requirements for the signaling applied within the PCN
domain: (1) PCN-feedback-information is carried from the PCN-egress-
node to the decision point;(2) the decision point may ask the PCN-
ingress-node to measure, and report back, the rate of PCN-traffic
between this pair of PCN-boundary-nodes. The decision point may be
either collocated with the PCN-ingress-node or a centralized node (in
the latter case, (2) is not required). The signaling requirements
pertain in particular to two edge behaviours, "controlled load (CL)"
and "single marking (SM)" [draft-ietf-pcn-cl-edge-behaviour-08],
[draft-ietf-pcn-sm-edge-behaviour-05].
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