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RFC 6663
Title: Requirements for Signaling of Pre-Congestion
Information in a Diffserv Domain
Author: G. Karagiannis, T. Taylor,
K. Chan, M. Menth,
P. Eardley
Status: Informational
Stream: IETF
Date: July 2012
Mailbox: g.karagiannis@utwente.nl,
tom.taylor.stds@gmail.com,
khchan.work@gmail.com,
menth@uni-tuebingen.de,
philip.eardley@bt.com
Pages: 7
Characters: 15316
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-pcn-signaling-requirements-08.txt
URL: http://www.rfc-editor.org/rfc/rfc6663.txt
Pre-Congestion 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 sent PCN-traffic between that
PCN-ingress-node and PCN-egress-node. The Decision Point may be either
collocated with the PCN-ingress-node or a centralized node (in the first
case, (2) is not required). The signaling requirements pertain in
particular to two edge behaviors, Controlled Load (CL) and Single Marking
(SM). This document is not an Internet Standards Track specification; it
is published for informational purposes.
This document is a product of the Congestion and Pre-Congestion Notification Working Group of the IETF.
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