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

Document Type Expired Internet-Draft (pcn WG)
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
Stream IETF
Intended RFC status Historic
Expired & archived
pdf htmlized (tools) htmlized bibtex
Stream WG state WG Document
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Action Holders
Consensus Boilerplate Unknown
Telechat date
Responsible AD David Harrington
IESG note This document should not be published, per WG and IESG consensus.
See http://www.ietf.org/mail-archive/web/pcn/current/msg03113.html

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.
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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 (menth@informatik.uni-tuebingen.de)
Jozef Babiarz (j.babiarz@3inovanetworks.com)
Toby Moncaster (toby@moncaster.com)
Bob Briscoe (bob.briscoe@bt.com)

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