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Issue No. 06 - June (2012 vol. 23)
ISSN: 1045-9219
pp: 1030-1037
Marco Papa Manzillo , Politecnico di Torino, Torino
Luigi Ciminiera , Politecnico di Torino, Torino
Guido Marchetto , Politecnico di Torino, Torino
Fulvio Risso , Politecnico di Torino, Torino
Current Peer-to-Peer (P2P) file sharing systems make use of a considerable percentage of Internet Service Providers (ISPs) bandwidth. This paper presents the Collaborative Locality-aware Overlay SERvice (CLOSER), an architecture that aims at lessening the usage of expensive international links by exploiting traffic locality (i.e., a resource is downloaded from the inside of the ISP whenever possible). The paper proves the effectiveness of CLOSER by analysis and simulation, also comparing this architecture with existing solutions for traffic locality in P2P systems. While savings on international links can be attractive for ISPs, it is necessary to offer some features that can be of interest for users to favor a wide adoption of the application. For this reason, CLOSER also introduces a privacy module that may arouse the users' interest and encourage them to switch to the new architecture.
P2P, file sharing, traffic locality, privacy.

M. P. Manzillo, L. Ciminiera, F. Risso and G. Marchetto, "CLOSER: A Collaborative Locality-Aware Overlay SERvice," in IEEE Transactions on Parallel & Distributed Systems, vol. 23, no. , pp. 1030-1037, 2011.
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