Research on Spanning Tree Protocol and Circle of Switch Network

交换网络环路是为交换网络提供冗余链路时形成的,环路的存在导致了交换网络中广播风暴的产生,致使交换网络的MAC地址系统失效,这是冗余链路所不期望产生的.现代化的网络要求交换网络中必须具备冗余链路,以避免因单点故障引起的网络中断所带来的损失.本文讨论生成树协议在具有冗余链路的交换网络中的工作实现,及随着网络应用要求而改进的生成树协议技术,即快速生成树协议和多生成树协议的工作实现,从而达到在交换网络中既保障了网络冗余链路,又避免了环路危害的目的.The redundancy link of the switch network causes circle of network.And the circle causes not only the storm of the network broadcasting,but also the failure of MAC address system.However,the advanced network needs the redundancy link,because it can avoid the break of network on single link.This paper is about how to avoid the damage of redundancy link through spanning tree protocol,and it discusses the principle of rapid spanning tree protocol and multiple spanning tree protocol.In the switch network of redundancy link,these protocols solve the damage of the circle,and provide the redundancy link.厦门大学985二期信息创新平台项目资