隧道代理的负载均衡问题研究  

Load Balancing for Tunnel Broker in IPv4-IPv6 Transition

作　　者：郑明[1] 陈茂科[1] 李学农[1] 

机构地区：[1]清华大学信息网络工程研究中心,北京100084

出　　处：《厦门大学学报（自然科学版）》2007年第A02期9-13,共5页Journal of Xiamen University：Natural Science

基　　金：国家CNGI大规模路由和组播试验(CNGI-04-13-2T)资助

摘　　要：隧道代理是IPv4-IPv6过渡过程中的重要技术,分布式部署隧道代理有利于提高系统的可靠性.为了解决隧道代理分布式部署面临的负载均衡问题,本文从调度者,参数和调度算法3个方面研究了隧道代理的负载均衡问题,并结合最少利用率算法和加权轮叫算法,提出了一种包含简单预测机制和过载预警机制的新的负载均衡算法.仿真实验的结果表明,所提出的算法在突发用户接入、突发初始负载和预防过载的方面,优于现有的负载均衡算法,适应于隧道代理系统的分布式运行实践.Tunnel Broker is an important technique in IPv4-IPv6 transition. Distributed deployment of Tunnel Broker improves the reliability of the entire system. In order to solve the problem of load balancing among the distributed Tunnel Broker servers, we study dispatcher, parameter and scheduling algorithm , and present a new load-balancing algorithm based on combination of Least Using Rate and Weighted Round-Robin algorithms. The new algorithm is featured with simple load prediction and overload alert mechanisms. Simulations validate the superiority of the proposed algorithm over ever-existing techniques for practice of distributed Tunnel Broker, in the circumstances of burst user access, burst initial traffic and overloaded state.

关 键 词：分布式系统 隧道代理 负载均衡 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]