[re-ECN] Fwd: WG Action: Congestion Exposure (conex)
Lars Eggert <lars.eggert@nokia.com> Fri, 04 June 2010 07:31 UTC
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From: Lars Eggert <lars.eggert@nokia.com>
Date: Fri, 04 Jun 2010 10:30:10 +0300
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Cc: conex@ietf.org
Subject: [re-ECN] Fwd: WG Action: Congestion Exposure (conex)
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Hi, you have probably seen that the CONEX WG has been chartered. The WG mailing list is conex@ietf.org. I have requested that the secretariat subscribe everyone who is currently on the re-ecn@ietf.org list to the new CONEX WG list. I leave it up to Bob to decide if he wants to keep the re-ecn@ietf.org list around; but any CONEX-related discussion should move to conex@ietf.org. Lars Begin forwarded message: > From: IESG Secretary <iesg-secretary@ietf.org> > Date: June 3, 2010 23:48:40 GMT+03:00 > To: IETF Announcement list <ietf-announce@ietf.org> > Cc: "marcelo@it.uc3m.es" <marcelo@it.uc3m.es>, "nanditad@google.com" <nanditad@google.com>, "conex@ietf.org" <conex@ietf.org> > Subject: WG Action: Congestion Exposure (conex) > > A new IETF working group has been formed in the Transport Area. For > additional information, please contact the Area Directors or the WG > Chairs. > > Congestion Exposure (conex) > --------------------------------------------------- > Current Status: Active Working Group > > Chairs: > Nandita Dukkipati <nanditad@google.com> > Marcelo Bagnulo <marcelo@it.uc3m.es> > > Transport Area Director(s): > Lars Eggert <lars.eggert@nokia.com> > David Harrington <ietfdbh@comcast.net> > > Transport Area Advisor: > Lars Eggert <lars.eggert@nokia.com> > > Mailing Lists: > General Discussion: conex@ietf.org > To Subscribe: https://www.ietf.org/mailman/listinfo/conex > Archive: http://www.ietf.org/mail-archive/web/conex/ > > Description of Working Group: > > The purpose of the CONEX working group is to develop a mechanism > by which senders inform the network about the congestion encountered > by previous packets on the same flow. Today, the network may signal > congestion by ECN markings or by dropping packets, and the receiver > passes this information back to the sender in transport-layer > acknowledgements. The mechanism to be developed by the CONEX WG > will enable the sender to also relay the congestion information > back into the network in-band at the IP layer, such that the total > level of congestion is visible to all IP devices along the path, > from where it could, for example, be provided as input to traffic > management. > > The primary goal of the CONEX WG is to develop experimental > specifications to achieve the above in IPv6 networks. The WG will > also develop an abstract, higher-level description of the congestion > exposure mechanism. > > Primary work items are: > > * An Informational document containing an abstract description of > the congestion exposure mechanism that is independent of specific > transport protocols and congestion information encoding techniques > needed for different IP protocol versions. > > * An Experimental specification of an IPv6 packet structure that > encapsulates CONEX information, defining a packet format and an > interpretation. > > * An Experimental specification of a modification to TCP, for the > timely transport of congestion information from the destination to > the sender. > > It is believed that the CONEX mechanism will be useful as a generative > technology that can be applied as a key element of congestion > management solutions in a wide variety of use cases. However, the > CONEX WG will initially focus on one use case, where the end hosts > and the network that contains the destination end host are CONEX-enabled > but other networks need not be. CONEX information can assist the > network operator's traffic management and, for example, incentivize > LEDBAT-like applications. Congestion-based billing is not within the > scope of the WG. > > Experiments on use cases are encouraged and the WG will solicit > feedback from such deployments. The WG may decide to document the > experience from such use cases in Informational documents, covering: > > * Assumptions made > > * Deployment considerations > > * Advice on how to use the CONEX mechanism as an element of a > congestion management solution > > * Security threats and advice on mitigation approaches (detailed > specifications of threat mitigation techniques are out of scope) > > * Descriptions of results from experiments with the use case > > The CONEX WG is only chartered to work on a congestion exposure mechanism > for IPv6 networks. When the output of the WG has seen adoption and > has proven to be useful, the WG may propose to the IESG that it > should be rechartered to extend this effort. The first result of > the WG is the usage scenarios document. Other documents will not > be considered for publication before this first document has seen > IETF consensus (but may be worked on in the WG). > > Goals and Milestones: > > Mar 2011 Submit use case description to IESG as Informational > > Jul 2011 Submit abstract specification for the congestion exposure > mechanism to IESG as Informational > > Nov 2011 Submit specification of IPv6 packet structure to IESG as > Experimental > > Nov 2011 Submit specification for modification to TCP to IESG as > Experimental > > _______________________________________________ > IETF-Announce mailing list > IETF-Announce@ietf.org > https://www.ietf.org/mailman/listinfo/ietf-announce
- Re: [re-ECN] Fwd: WG Action: Congestion Exposure … Bob Briscoe
- [re-ECN] Fwd: WG Action: Congestion Exposure (con… Lars Eggert
- Re: [re-ECN] [conex] Fwd: WG Action: Congestion E… David Harrington
- Re: [re-ECN] [conex] Fwd: WG Action: Congestion E… Bob Briscoe