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Recent studies have shown that the majority of today's internet traffic is related to Peer To Peer (P2P) traffic. The study of bandwidth in P2P networks is very important. Because it helps one in more efficient capacity planning and QoS provisioning when the authors would like to design a large scale computer networks. In this paper motivated by the behavior of peers (sources or seeds) that is modeled by Ornstein Uhlenbeck (OU) process, they propose a model for bandwidth in P2P networks. This model is represented with a stochastic integral. They also model the bandwidth when they have multiple downloads or uploads. The autocovariance structure of bandwidth in either case is studied and the statistical parameters such as mean, variance and autocovariance are obtained.
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