A study of an hybrid CDN-P2P system over the PlanetLab network

Authors:
Enrico Baccaglini;Marco Grangetto;Emanuele Quacchio;Simone Zezza
Affiliations:
Multimedia Adaptation and Interaction Department (MAIN, MLW), Istituto Superiore Mario Boella, via Pier Carlo Boggio 61, 10138 Torino, Italy;Dipartimento di Informatica, Universití degli Studi di Torino, C.so Svizzera 185, 10149 Torino, Italy;Advanced System Technology, STMicroelectronics S.r.l., Via Tolomeo 1, 20041 Cornaredo, MI, Italy;Dipartimento di Elettronica, Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Torino, Italy
Venue:
Image Communication
Year:
2012

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Abstract

In this work we propose an hybrid CDN-P2P architecture for video contents delivery based on the NextShare platform. Experiments were conducted over the PlanetLab network using a number of peers which encompass real network behaviors. Results show that although the NextShare is based on the original BitTorrent file sharing mechanism, the implemented tools can efficiently deliver video over a heterogeneous and time varying network if peers can rely on an intermediate distribution layer between the CDN and the final users. Among the other benefits, CDN edge servers are significantly offloaded and peers can experience low start-up delays. Architecture design and simulation results are taking place in the context of the European FP7 project COAST.