Congestion Exposure (ConEx) Concepts and Abstract Mechanism
draft-ietf-conex-abstract-mech-06

The information below is for an old version of the document
Document Type Expired Internet-Draft (conex WG)
Last updated 2013-04-25 (latest revision 2012-10-22)
Stream IETF
Intended RFC status (None)
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Expired & archived
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Reviews
Stream WG state WG Document
Document shepherd None
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Martin Stiemerling
Send notices to conex-chairs@tools.ietf.org, draft-ietf-conex-abstract-mech@tools.ietf.org

This Internet-Draft is no longer active.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-ietf-conex-abstract-mech-06.txt

Abstract

This document describes an abstract mechanism by which senders inform the network about the congestion encountered by packets earlier in the same flow. Today, network elements at any layer may signal congestion to the receiver by dropping packets or by ECN markings, and the receiver passes this information back to the sender in transport-layer feedback. The mechanism described here enables the sender to also relay this congestion information back into the network in-band at the IP layer, such that the total amount of congestion from all elements on the path is revealed to all IP elements along the path, where it could, for example, be used to provide input to traffic management. This mechanism is called congestion exposure or ConEx. The companion document "ConEx Concepts and Use Cases" provides the entry-point to the set of ConEx documentation.

Authors

Matt Mathis (mattmathis@google.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.)