Generally speaking, this is my topology diagram, which was roughly drawn by PS. Personally, I think that the wiring of each layer of the four floors should be designed as beautiful open wires, which is convenient for changing wires in the future, and the power cord and the network cable should be placed separately. And in my drawing, spare network cables should be reserved in open areas or office areas. Of course, I don't have a wireless transmitter here. It depends on the actual situation. . If necessary, you can connect the optical fiber to the wireless transmitter first and then to the router. In the figure, some servers are added according to the information found. Please add or subtract these according to the actual situation, and you can subtract the unnecessary ones. The following are basically changed according to the different needs of the library after I checked the information. . This is the schematic diagram I drew after checking myself. I don't know if it meets your requirements, but I hope you can point out which ones don't. Of course, if there is a problem with the whole expression, please ask again. Let me see the real general plan. . . . Good topic, yo, learned. .