What functions does the controller AC have ?

What functions does the controller AC have ？

AC, as a controller, has management functions, assumes the role of an AAA server, and can provide service functions such as authentication, encryption, and authorization. In addition, the controller can manage and serve users, restrict or allow user access, open or close related permissions, and can manage related requirements for wireless users.AC can manage AP, including AP registration, AP channel selection and AP radio frequency performance adjustment like power adjustment, etc. The AC can also perform traffic classification and traffic marking to ensure QoS functions such as priority forwarding when the AP forwards the traffic with high priority. It can also play other business functions such as multicast.