We've submitted a couple of drafts, which we'd very much appreciate your comments and feedback on, and which we will -  tsvwg agenda permitting - discuss in Vancouver. They’re about “Admission Control over DiffServ using Pre-Congestion Notification”:

-         a framework (architecture & use case)

-         RSVP extensions necessary for the framework.

Here are their abstracts & links to them

Abstract

This document describes a framework to achieve an end-to-end Controlled Load (CL) service without the scalability problems of previous approaches. Flow admission control and if necessary flow pre-emption preserve the CL service to admitted flows. But interior routers within a large DiffServ-based region of the Internet do not require flow state or signalling. They only have to give early warning of their own congestion by bulk packet marking using a new pre-congestion notification behaviour. Gateways around the edges of the region convert measurements of this packet granularity marking into admission control and pre-emption functions at flow granularity.

RSVP Extensions for Admission Control over Diffserv using Pre-congestion Notification

http://www.ietf.org/internet-drafts/draft-lefaucheur-rsvp-ecn-00.txt

Abstract

This document specifies the extensions to RSVP for support of the Controlled Load (CL) service over a Diffserv cloud using Pre-Congestion Notification as defined in [CL-ARCH].

Best wishes,

Joe Babiarz

Bob Briscoe

Kwok Chan

Anna Charny

Philip Eardley

Francois Le Faucheur

Dave Songhurst

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All,

There will be a BOF session on Wednesday afternoon next week on the topic of FEC over transport protocols. The objective is to consider starting work on a framework for generalized FEC protection of IP flows over unreliable transport (possibly based on the framework presented in draft-watson-tsgwg-fec-sf-00 which I presented at TSVWG and AVT at IETF63.)

The BOF description and agenda are available at: http://www3.ietf.org/proceedings/05nov/agenda/fecframe.txt

As many of you will be aware, there is increasing interest in applying FEC to media streams in a variety of environments, but a notable lack of IETF protocols to support that in a way which is independent of the actual FEC code used. This would would aim to address that in a way which is as far of possible generic with respect to transport and application protocols as well.

Regards,

Mark Watson