you can use three-layer switching plus wireless AP or layer 2 switches supporting AP. Three-layer switching is to set up a virtual local area network (VALN), which can set up three VLAN. It is best not to save the core switch, and the switch requires a speed limit, otherwise it will seriously affect the network speed of multiple users surfing the Internet at the same time. Basically, routers or gateways, core switches, and layer 3 switches can be ignored because there are few switches. Connect AP again. Without AP, ordinary wireless routing will do. The maximum number of high-end AP connections is 31 users, and generally it is 21 users. This is also the experience value, which was told by the customer service staff. The installation method is to put an AP or route in the corridor basically every 5-11 meters. When I was laying CMCC, I was there for 7 meters. That's about it. By the way, this three-layer switch needs a basic configuration, and then it can be managed through the network surface, which is super convenient. The three VLAN mentioned above and one network segment are for the management switch. Others are assigned to AP. If the other two network segments are not enough, add another VLAN. Routers or gateways have to be configured accordingly. Gateway is better than router. Another way is to use layer 2 switches plus AP. This is the same as CMCC. Either way, you'd better find a network company to do it In addition, this three-layer switch has a console interface that is the same as the network cable interface, but its function is completely different. The three-layer switch is two-layer when it is not configured, so it must be configured. In fact, it is just ordinary switching plus a routing function.