(Suppose that when the unit wants to upload a report on the collective network, different network segments have become "stumbling blocks" to prevent the transmission. To terminate the "inter-access" between different network segments, routers must be set up between different network segments. Assuming that it costs tens of thousands of yuan to acquire a router, it is not worth it. Originally, we could use the soft routing in Windows 2000 to end the hope of mutual visits between two different network segments.)