Application-Layer Traffic Optimization (ALTO) Problem Statement
RFC 5693

Approval announcement
Draft of message to be sent after approval:

From: The IESG <iesg-secretary@ietf.org>
To: IETF-Announce <ietf-announce@ietf.org>
Cc: Internet Architecture Board <iab@iab.org>,
    RFC Editor <rfc-editor@rfc-editor.org>, 
    alto mailing list <alto@ietf.org>, 
    alto chair <alto-chairs@tools.ietf.org>
Subject: Document Action: 'Application-Layer Traffic Optimization (ALTO) Problem Statement' to Informational RFC

The IESG has approved the following document:

- 'Application-Layer Traffic Optimization (ALTO) Problem Statement '
   <draft-ietf-alto-problem-statement-04.txt> as an Informational RFC


This document is the product of the Application-Layer Traffic Optimization Working Group. 

The IESG contact persons are Lisa Dusseault and Alexey Melnikov.

A URL of this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-alto-problem-statement-04.txt

        Technical Summary

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.

        Working Group Summary

This document is the problem statement that accompained the chartering
process of the ALTO WG.

        Document Quality

The document has received extended review by WG members and TSV
experts.

Personnel

Lisa Dusseault is the responsible Area Director.  Jon Peterson
is the shepherd.