关键词: P2P，层次化，负载均衡

Abstract: Load imbalance restricts performance of P2P applications badly. Previous researches solve P2P load imbalance focusing on flat DHT(Distributed Hashing Table) based networks. Recently, hierarchical topologies get more attendon for many inherent merits. In this paper,a load balancing algorithm was proposed by merging advantages of virtual server and hierarchical technology. Simulation results show that our algorithm can ensure fair load distribution on heterogeneous nodes.

Key words: P2P, Hierarchical, Load balancing