一种分布式交换机的双主控热备冗余设计

Highly Reliable Hot Standby Redundant Design of Distributed Switch

为了保证高可靠性,现代网络环境常采用热备冗余方式以提高容灾能力,保证网络某一节点出现故障后不会导致数据业务中断或能够快速恢复数据业务。主控板作为分布式交换机的关键核心部件,决定了分布式交换机的可靠性和整个网络的可靠性。在这种背景下提出了一种双主控热备冗余的总体设计思路及实现方案,通过软硬件协同配合实现双主控板的主备选举、主备切换、主备同步通道、文件同步和表项同步,从而提高了分布式交换机的高可靠性。

In order to ensure high reliability in modern network environment,master/standby redundancy is often used to improve disaster recovery ability,so that after a node of the network fails,it will not cause data service interruption or quickly recover data service.As the key component of the distributed switch,the main control board determines the reliability of the distributed switch and the reliability of the whole network.In this context,the overall design idea and implementation scheme of dual master control hot standby redundancy are proposed.In this paper,the master/standby election,master/standby switching,master/standby synchronization channel,file synchronization and entry synchronization are realized through the cooperation of software and hardware,so as to improve the stability of distributed switches.