I-D ACTION:draft-ietf-intserv-compress-02.txt

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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Integrated Services Working Group of the IETF.

	Title		: Integrated Services in the Presence of Compressible 
                          Flows
	Author(s)	: B. Davie, S. Casner, C. Iturralde, D. Oran,
                          J. Wroclawski 
	Filename	: draft-ietf-intserv-compress-02.txt
	Pages		: 14
	Date		: 28-Feb-00
	
An Integrated Services router performs admission control and resource
allocation based on the information contained in a TSpec (among other
things).  As currently defined, TSpecs convey information about the
data rate (using a token bucket) and range of packet sizes of the
flow in question. However, the TSpec may not be an accurate
representation of the resources needed to support the reservation if
the router is able to compress the data at the link level.  This
specification describes an extension to the TSpec which enables a
sender of potentially compressible data to provide hints to int-serv
routers about the compressibility they may obtain.  Routers which
support appropriate compression take advantage of the hint in their
admission control decisions and resource allocation procedures; other
routers ignore the hint.  An initial application of this approach is
to notify routers performing RTP header compression that they may
allocate fewer resources to RTP flows.

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