(In the use of the hospital intranet, the requirements for network reliability are getting higher and higher, and how to ensure the uninterrupted transmission of the network for the main service entrance or access point has become a problem that needs to be solved urgently. When the existing core equipment of the internal network fails, the network, use and business of the internal network will be completely suspended. If only one device is used at this important business point, no matter how reliable it is, the system must accept the risk of network downtime due to a single point of failure. The existing intranet network solution is unreasonable, and a certain IP address often conflicts with the server address inside the network, which affects the use of the server and the business system.)