Network management data configuration method, device and system

A network management data configuration method, device and system. The method comprises: obtaining, by a network manager, network management data configuration command configured by a user; updating, by the network manager, according to the network management data configuration command, network management data, and configuring, by the network manager, managed equipment; after the network management data configuration becomes invalid, rolling back, by the network manager, the network management data; and after the network management data configuration is invalid, and a response, corresponding to the network management data configuration command, and from the managed equipment, is received, updating, by the network manager, according to the network management data configuration command, the network management data.