Peer-to-peer (P2P) networks are distributed systems where each user shares his resources and cooperates with other users. These networks are designed over IP-based infrastructure. The resources of each user in these networks are shared in a distributed way on a trust based mechanism. P2P networks have some unique characteristics like scalability and cost efficiency, which separate these networks from other distributed networks. These networks are mainly used for resource sharing. However, resource searching in this type of networks is not centrally controlled in nature. Further poor search scalability is another limitation of these networks. Chord like or chord-based protocols used in the search operations in P2P networks utilize a finger table to shorten the query search length. We exploit the finger forwarding mechanism in our proposed scheme which further reduces the resource’s search path length. We propose a last finger search table in addition to finger table to enhance the file lookup performance in the structured P2P networks. The proposed scheme reduces the lookup path and increases search efficiency as compared to the existing chord and binary search routing equivalent schemes.

对等（P2P）网络是分布式系统，每个用户共享其资源并与其他用户合作。这些网络是基于基于IP的基础结构设计的。这些网络中每个用户的资源都在基于信任的机制上以分布式方式共享。P2P网络具有一些独特的特性，例如可伸缩性和成本效率，使这些网络与其他分布式网络分离。这些网络主要用于资源共享。但是，这种类型的网络中的资源搜索本质上不是集中控制的。这些网络的另一个局限性是搜索扩展性差。在P2P网络的搜索操作中使用的基于和弦或基于和弦的协议利用手指表来缩短查询搜索长度。我们在提出的方案中利用了手指转发机制，该机制进一步减少了资源的搜索路径长度。除了手指表之外，我们还提出了最后一个手指搜索表，以增强结构化P2P网络中的文件查找性能。与现有的和弦和二进制搜索路由等效方案相比，所提出的方案减少了查找路径并提高了搜索效率。