介绍了生成树协议产生的背景、技术原理以及实现过程,通过具体实验验证了生成树协议在交换以太网中的巨大用途。在交换机上使用debugging STP命令调试生成树协议相关信息以及通过端口镜像,利用协议分析软件捕获BPDU数据帧,详细展现了生成树协议工作的全过程。
This paper introduces the background, principles and implementation of Spanning Tree Protocol (STP) , shows the importance of STP in switch Ethemet by specific experiments. Through processing of debugging STP command in switches and sniffing the STP BPDU frames with protocol analyzers eombing with port spanning, the whole process of STP works is shown.