基于板卡的fax源程序，其中包括一个cpp源文件-the fax board-based source, including a source cpp

rip仿真，可以自己设计拓扑图，经过若干次运算后输出所有路由器完整的路由表信息。-rip simulation, design topology, to output all routers in the routing table information after several operations.