Pre-Congestion Notification marking
draft-briscoe-tsvwg-cl-phb-03

Document Type Expired Internet-Draft (individual in tsv area)
Last updated 2007-04-25 (latest revision 2006-10-22)
Stream IETF
Intended RFC status (None)
Formats
Expired & archived
plain text pdf html
Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Telechat date
Responsible AD Lars Eggert
Send notices to bob.briscoe@bt.com

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at
https://www.ietf.org/archive/id/draft-briscoe-tsvwg-cl-phb-03.txt

Abstract

Pre-Congestion Notification (PCN) builds on the concepts of RFC 3168, "The addition of Explicit Congestion Notification to IP". However, Pre-Congestion Notification aims at providing notification before any congestion actually occurs. Pre-Congestion Notification is applied to real-time flows (such as voice, video and multimedia streaming) in DiffServ networks. As described in [CL-DEPLOY], it enables "pre" congestion control through two procedures, flow admission control and flow pre-emption. The draft proposes algorithms that determine when a PCN-enabled router writes Admission Marking and Pre-emption Marking in a packet header, depending on the traffic level. The draft also proposes how to encode these markings. We present simulation results with PCN working in an edge-to-edge scenario using the marking algorithms described. Other marking algorithms will be investigated in the future.

Authors

Bob Briscoe (bob.briscoe@bt.com)

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