[alto] I-D Action:draft-ietf-alto-problem-statement-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 Application-Layer Traffic Optimization Working Group of the IETF.


	Title           : Application-Layer Traffic Optimization (ALTO) Problem Statement
	Author(s)       : J. Seedorf, E. Burger
	Filename        : draft-ietf-alto-problem-statement-02.txt
	Pages           : 14
	Date            : 2009-07-03

Peer-to-peer applications, such as file sharing, real-time
communication, and live and on-demand media streaming use a
significant amount of Internet resources.  Such applications often
transfer large amounts of data in peer-to-peer connections.  However,
they usually have little knowledge of the underlying network
topology.  As a result, they may choose their peers randomly with
respect to the underlying network topology or they may choose their
peers based on measurements and statistics that, in many situations,
may lead to suboptimal choices.  This document describes problems
related to improving traffic generated by peer-to-peer applications.
In particular, this document discusses issues which better-than-
random peer selection based on network-layer information may raise.

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