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PCN Encoding for Packet-Specific Dual Marking (PSDM Encoding)

Document Type Expired Internet-Draft (pcn WG)
Expired & archived
Authors Michael Menth , Jozef Babiarz , Toby Moncaster , Bob Briscoe
Last updated 2015-10-14 (Latest revision 2012-03-12)
Replaces draft-menth-pcn-psdm-encoding
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status Historic
Additional resources Mailing list discussion
Stream WG state WG Document
Document shepherd (None)
IESG IESG state Expired (IESG: Dead)
Action Holders
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD David Harrington
IESG note This document should not be published, per WG and IESG consensus.

The reason is that the WG reached consensus that 3-in-1 should be the only encoding going forward.
Publishing this draft would be confusing.
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


Pre-congestion notification (PCN) is a link-specific and load- dependent packet re-marking mechanism and provides in Differentiated Services networks feedback to egress nodes about load conditions within the domain. It is used to support admission control and flow termination decision in a simple way. This document proposes how PCN marks can be encoded into the IP header for packet-specific dual marking (PSDM). PSDM encoding provides three different codepoints: not-ETM, not-ThM, and PM. Excess-traffic-marking may re-mark not- ETM-packets to PM and threshold-marking may re-mark not-ThM-packets to PM.


Michael Menth
Jozef Babiarz
Toby Moncaster
Bob Briscoe

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)