高可用性群集系统ARP协议问题研究

Research for the Question of ARP Protocol on High Availability Cluster System

群集系统常用作高可靠性服务器,应用于关键网络计算领域。但是,由某些型号的计算机构成的群集系统在网络通信方面存在ARP协议缺陷,当服务进程从主用节点切换到冗余备份结点后,会出现一段时间的网络通信中断,从而严重影响服务质量。本文从ARP协议工作原理着手,通过测试实验,详细阐述了群集系统中存在的ARP协议缺陷问题,并给出了解决办法。

Being considered as a sort of high availability server, the high availability cluster system is often applied in key network computation domain. However, there is a bug in ARP protocol in the high availability cluster system that is constituted by some certain model computers. When the service process switches to one of the redundant nodes from the master node, it will come forth a period of communication interrupt to the network and lead fatal influence to the service quality. Embarking upon the work principle of the ARP protocol and after the testing experiment, this paper has given a detailed expatiation and the solution for the bug of ARP protocol.