Abstract
P4P (Provider Portal for Applications) is a model aiming to incorporate P2P with ISP and improve the performance of both the ISP and the P2P applications. In this study, we analyze the relationship between the link traffic and the P-distance, which is the core interface of P4P, and illustrate the disadvantage of P4P in dealing with network topology with bottleneck links. Further, with link utility function as the optimization objective, we propose an improved model–Improved-P4P, making the traffic produced by P2P applications more homogeneous, which can reduce the peak link utilization and protect bottleneck links, and then improve both the network efficiency and the P2P performance. We have built a simulation platform based on BitTorrent and conducted extensive simulations. These simulations demonstrate that Improved-P4P achieves a lower cost for ISPs and a better performance for P2P applications than native P2P. Moreover, compared with P4P, Improved-P4P reduces traffic on bottleneck links without compromising on the performance of the P2P applications. We believe that relieving of pressure on bottleneck links hold great significance especially in extreme settings. Improved-P4P performs steadily in different swarm sizes, proving that it is scalable and easy to deploy.
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Liu, Y., Zhang, S., Liu, H. (2013). An Improved Cooperative Model of P2P and ISP. In: Su, J., Zhao, B., Sun, Z., Wang, X., Wang, F., Xu, K. (eds) Frontiers in Internet Technologies. Communications in Computer and Information Science, vol 401. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-53959-6_9
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DOI: https://doi.org/10.1007/978-3-642-53959-6_9
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