¹School of Information, Beijing Wuzi University, Beijing, China
²State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, China

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Abstract—In order to improve the Peer-to-Peer (P2P) network resource locating efficiency and isolate malicious peers, a topology adjustment algorithm for unstructured P2P networks is proposed. TTL (time-to-live) value for each neighbor has been set up and adjusted; specific information on the query path is recorded; a topology adjustment algorithm is given. The topology adjustment algorithm is evaluated by peer shortest path, simulation and analysis show that the topology adjustment algorithm can isolate malicious peers to the network edge, and improve service quality of P2P networks.

Index Terms—Peer-to-Peer; unstructured; topology; shortest path

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Cite: Zhen Yu, Jie Zhu, Guicheng Shen, Haiyan Liu, "A Topology Adjustment Algorithm for P2P Systems," Journal of Software vol. 9, no. 8, pp. 2217-2222, 2014.