Arquitectura de topología híbrida para sistemas P2P de compartición de ficheros

Abstract

Over the Internet today, there has been much interest in emerging Peer-to-Peer (P2P) network overlays because they provide a good substrate for creating data sharing, content distribution, and application-level multicast applications. There are two classes of P2P overlay networks: structured and unstructured. Structured P2P networks can efficiently locate items, but the search is not user friendly. Conversely, unstructured P2P networks have a easy mechanism to search a content, but the lookup process is inefficient. In this paper, we propose an hybrid structured and unstructured topology in order to take advantages of both kind of networks. In addition, our proposal guarantees that if a content is at any place in the network, it will be reachable with probability one. Simulation results show that the behaviour of the network is stable and that the network distributes the contents efficiently to avoid network congestion.