基于主动网络的分布式P2P网络模型  

A Distributed P2P Network Model Based on Active Network

作　　者：黄道颖[1] 黄建华[1] 庄雷[1] 李祖鹏[1] 

机构地区：[1]解放军信息工程大学国家数字交换系统工程技术研究中心

出　　处：《软件学报》2004年第7期1081-1089,共9页Journal of Software

基　　金：国家高技术研究发展计划(863);河南省高校青年骨干教师资助计划项目~~

摘　　要：分布式P2P网络Gnutella模型的对等机共享信息查询的搜索、定位路由协议仅使用洪泛算法,因此存在可扩展性问题.同时,由于其协议机制仅在应用层实现,缺乏对Internet底层通信子网路由资源的利用,存在性能与效率不高的问题.为了解决上述问题,考察了Gnutella网络和Internet网络节点的拓扑分布规律,二者不仅均呈现幂规律(powerlaw)和小世界(smallworld)特征,而且其幂系数t非常近似.提出了一个基于主动网络技术的分布式P2P网络(activedistributedpeer-to-peernetwork,简称ADP2PN)模型,并实现了其原型系统.通过对原型系统体系结构和信息查询的路由协议算法的模拟与分析表明,ADP2PN模型可以解决上述可扩展性以及性能与效率所存在的问题,模型是合理而有效的.Gnutella protocol simply uses flooding algorithm to route peer抯 querying, so it has the poor scalability problem. For not using down-layer抯 routing information of Internet, it also has the common problem that its querying routing is just implemented on application layer, and its efficiency is low. The distributions of topology nodes in Gnutella and Internet are reviewed, and they not only exhibit power law and small world properties, but also have the near power-coefficient t. A new distributed peer-to-peer network model based on active network technology (active distributed peer-to-peer network, ADP2PN) is proposed, and its prototype system is implemented. Simulation results about ADP2PN抯 prototype architecture and querying routing algorithm show that it could effectively resolve the above problems, so the model is reasonable and valid.

关 键 词：对等网络 主动网络 幂规律 小世界 最大聚集度优先算法 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]