基于环状检测/备份链的移动代理容错方法  

Mobile agent fault-tolerant method based on ring detection & backup chain

作　　者：张玉军[1] 张红梅[2] 马超[1] 许智君[1] 张瀚文[1] 

机构地区：[1]中国科学院计算技术研究所网络技术研究中心,北京100190 [2]中国科学院高能物理研究所计算中心,北京100049

出　　处：《通信学报》2011年第9期18-25,共8页Journal on Communications

基　　金：国家自然科学基金资助项目(60803139;61173133;61100177);国家科技支撑计划基金资助项目(2008BAH37B07)~~

摘　　要：提出了一种适用于移动IPv6网络的基于环状检测/备份链的家乡代理容错方法。利用结果唯一的排序算法,在同一链路上的家乡代理之间形成相互检测和信息备份的关系;相邻的家乡代理之间相互进行有效性检测,有效降低失效检测延时;利用相邻家乡代理之间的注册信息备份,实现快速的服务迁移。理论分析和仿真实验表明该方法比现有方法具有更小的服务中断时间。在多个家乡代理连续失效的场景中,仿真实验表明所提方法具有更小的应用层分组丢失率和更少的全局信令开销。The home agent（HA） fault-tolerant method was proposed based on ring detection backup chain（DBCM） for mobile IPv6（MIPv6） networks.All HA in the same link were formed into the relationship of validation detection and information backup based on the deterministic ordering method.The latency of failure detection was reduced by validation detection among HA.Service transfer was fleetly implemented by the replica of registration information between neighboring home agents.The results of theoretical analysis and simulation show that our method has less service break time.Simulation results also show that our method has less application packets dropping ratio and global signal cost in the scenario that multiple home agents break down continuously.

关 键 词：移动IPV6 家乡代理 容错方法 服务迁移 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]