[Tsvwg] I-D ACTION:draft-ietf-tsvwg-quickstart-07.txt

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This draft is a work item of the Transport Area Working Group Working Group of the IETF.

	Title		: Quick-Start for TCP and IP
	Author(s)	: S. Floyd, et al.
	Filename	: draft-ietf-tsvwg-quickstart-07.txt,.ps
	Pages		: 90
	Date		: 2006-10-9
	
This document specifies an optional Quick-Start mechanism for
    transport protocols, in cooperation with routers, to determine an
    allowed sending rate at the start and at times in the middle of a
    data transfer (e.g., after an idle period).  While Quick-Start is
    designed to be used by a range of transport protocols, in this
    document we only specify its use with TCP.  Quick-Start is designed
    to allow connections to use higher sending rates when there is
    significant unused bandwidth along the path and the sender and all
    of the routers along the path approve the Quick-Start Request.

    This document describes many paths where Quick-Start requests would
    not be approved.  These paths include all paths containing routers,
    IP tunnels, MPLS paths, and the like that do not support Quick-
    Start.  These paths also include paths with routers or middleboxes
    that drop packets containing IP options.  Quick-Start requests could
    be difficult to approve over paths that include multi-access layer-
    two networks.  This document also describes environments where the
    Quick-Start process could fail with false positives, with the sender
    incorrectly assuming that the Quick-Start request had been approved
    by all of the routers along the path.  As a result of these
    concerns, and as a result of the difficulties and seeming absence of
    motivation for routers such as core routers to deploy Quick-Start,
    Quick-Start is being proposed as a mechanism that could be of use in
    controlled environments, and not as a mechanism that would be
    intended or appropriate for ubiquitous deployment in the global
    Internet.

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