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RFC 6663

"Requirements for Signaling of Pre-Congestion Information in a Diffserv Domain", July 2012

Canonical URL:
http://www.rfc-editor.org/rfc/rfc6663.txt
This document is also available in this non-normative format: PDF.
Status:
INFORMATIONAL
Authors:
G. Karagiannis
T. Taylor
K. Chan
M. Menth
P. Eardley
Stream:
IETF
Source:
pcn (tsv)

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Abstract

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.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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