Requirements for Signaling of Pre-Congestion Information in a Diffserv Domain

Georgios Karagiannis, T. Taylor, K. Chan, M. Menth, P Eardley

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    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).
    Original languageUndefined
    Title of host publicationProceedings of the 84th Internet Engineering Task Force (IETF)
    Place of PublicationCanada
    PublisherInternet Engineering Task Force (IETF)
    Number of pages7
    ISBN (Print)2070-1721
    Publication statusPublished - Jul 2012
    Event84th Internet Engineering Task Force Meeting, IETF 2012 - Vancouver, Canada
    Duration: 29 Jul 20123 Aug 2012
    Conference number: 84

    Publication series

    NameRFC Document Series
    PublisherIETF (Internet Engineering Task Force)
    ISSN (Print)2070-1721


    Conference84th Internet Engineering Task Force Meeting, IETF 2012
    Abbreviated titleIETF
    Internet address


    • CR-C.2.3
    • CR-C.2
    • IR-83500
    • CR-C.2.2
    • METIS-293303
    • EWI-22866

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