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A Survey on Research on the Application-Layer Traffic Optimization (ALTO) Problem

Document Type Replaced Internet-Draft (individual)
Expired & archived
Authors Ivica Rimac , Volker Hilt , Marco Tomsu , Vijay K. Gurbani , Enrico Marocco
Last updated 2009-08-20 (Latest revision 2009-07-06)
Replaced by draft-irtf-p2prg-alto-survey
RFC stream (None)
Intended RFC status (None)
Stream Stream state (No stream defined)
Consensus boilerplate Unknown
RFC Editor Note (None)
IESG IESG state Replaced by draft-irtf-p2prg-alto-survey
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


A significant part of the Internet traffic today is generated by peer-to-peer (P2P) applications used traditionally for file-sharing, and more recently for real-time communications and live media streaming. Such applications discover a route to each other through an overlay network with little knowledge of the underlying network topology. As a result, they may choose peers based on information deduced from empirical measurements, which can lead to suboptimal choices. We refer to this as the Application Layer Traffic Optimization (ALTO) problem. In this draft we present a survey of existing literature on discovering topology characteristics.


Ivica Rimac
Volker Hilt
Marco Tomsu
Vijay K. Gurbani
Enrico Marocco

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)