DATA TRANSMISSION METHOD, PNF SDN CONTROLLER, VNF SDN CONTROLLER, AND SYSTEM

摘要

The present application provides a data transmission method, a PNF SDN controller, a VNF SDN controller, and a system. The data transmission method comprises: a PNF SDN controller receiving a first message and an access loop identifier transmitted by a first network device; the PNF SDN controller generating a second message according to the access loop identifier and the first message; the PNF SDN controller transmitting the second message to a virtual network function software-defined networking (VNF SDN) controller, so as to cause the VNF SDN controller to transmit the second message to a second network device, wherein the second message is used to request the second network device to assign an IP address or an IP address prefix to a user device, so as to reduce the complexity of network devices.