Evaluation of P4P Based on Real Traffic Measurement

Peer-To-Peer (P2P) traffic represents a significant proportion of the traffic today. However, currently widespread P2P systems take no account of the underlying network infrastructure. But by doing so, they would be able to perform a much more efficient peer selection. The P4P approach aims at allowing ISPs to cooperate with peers in order to improve their peer selection in the overlay. The objectives of this paper are to assess the benefits of P4P, both for the P2P system and the ISP, thanks to an experiment of a scale never achieved before, there by complementing the results obtained in previous work. The results show that P2P applications need more information than just the Internet domain, in order to improve their performance, and that the inter-domain P2P traffic can be reduced by at least 72%.