经过移植后的802.1s 快速生成树协议源代码，直接在arm-linux上编译生成目标码，可以在AT91SAM9260上运行-After transplantation 802.1s Rapid Spanning Tree protocol source code, directly on the arm-linux compiled object code, you can run on AT91SAM9260

8021x核心代码，校园拨号网络必备，是学生自己写自己代码的必要工具-8021x code，school will need it

讲述802.1s相关细节，描述MSTP处理详细过程。-Details about the 802.1s, MSTP deal with the detailed descr iption of the process.