Management method, equipment and system for client equipment

The invention provides a client device management method, device and system, and belongs to the technical field of communication. In the scheme provided by the invention, the broadband access equipment can adopt the domain of the target domain name to manage the client equipment belonging to the domain of the original domain name based on the established mapping relationship between the original domain name and the target domain name. In a scene with a domain name modification requirement, the broadband access equipment can map the original domain name into the target domain name different from the original domain name, so that the client equipment does not need to modify the user name of the client equipment, and the authentication server does not need to modify the stored user name of the client equipment. Therefore, the problem of large data modification amount caused by direct domain name modification can be avoided, and the operation and maintenance cost of the client device and the authentication server