Firstly we seek the path of network from the starting Net PC to the destination device,according to Bellman?Ford algorithm if RIP protocol is running in the autonomous system and Dijkstra algorithm if OSPF protocol is active.

• 该技术的实现分为两大部分:在网络寻径的基础上定位故障,即在配置了RIP协议的自治系统内,根据RIP协议的实现算法Bellman Ford确定两个网络工作站之间的链路,若自治系统配置的是OSPF协议,则根据Dijkstra算法寻径,再编程实现Ping命令功能来迅速定位故障;