The IESG has received a request from the Congestion and Pre-Congestion Notification WG (pcn) to consider the following document: - 'Encoding 3 PCN-States in the IP header using a single DSCP' <draft-ietf-pcn-3-in-1-encoding-08.txt> as a Proposed Standard The IESG plans to make a decision in the next few weeks, and solicits final comments on this action. Please send substantive comments to the ietf@ietf.org mailing lists by 2012-02-23. Exceptionally, comments may be sent to iesg@ietf.org instead. In either case, please retain the beginning of the Subject line to allow automated sorting. Abstract The objective of Pre-Congestion Notification (PCN) is to protect the quality of service (QoS) of inelastic flows within a Diffserv domain. The overall rate of the PCN-traffic is metered on every link in the PCN domain, and PCN-packets are appropriately marked when certain configured rates are exceeded. Egress nodes pass information about these PCN-marks to decision points which then decide whether to admit or block new flow requests or to terminate some already-admitted flows during serious pre-congestion. This document specifies how PCN-marks are to be encoded into the IP header by re-using the Explicit Congestion Notification (ECN) codepoints within a PCN-domain. This encoding provides for up to three different PCN marking states using a single DSCP: not-marked (NM), threshold-marked (ThM) and excess-traffic-marked (ETM). Hence, it is called the 3-in-1 PCN encoding. This document obsoletes RFC5696. The file can be obtained via http://datatracker.ietf.org/doc/draft-ietf-pcn-3-in-1-encoding/ IESG discussion can be tracked via http://datatracker.ietf.org/doc/draft-ietf-pcn-3-in-1-encoding/ No IPR declarations have been submitted directly on this I-D. _______________________________________________ IETF-Announce mailing list IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
