SDN-BASED QOS-SUPPORTED COMMUNICATIONS TUNNEL ESTABLISHMENT METHOD AND SYSTEM

摘要

The present invention provides an SDN-based QoS-supported communication tunnel establishment method and system used in a communication network comprising SDN switches and an SDN controller, the method comprising: an SDN switch reports a target MAC address and an SDN flow mismatching a flow table to an SDN controller; the SDN controller obtains a forwarding path of the SDN flow; the SDN controller generates a tunnel ID mapping table and a queue ID mapping table according to the forwarding path and 5-tuple information of the SDN flow, and generates a corresponding flow table, a priority queue being specified in the tunnel ID; the SDN controller dispatches the flow table to the SDN switches; and the SDN switch obtains the output queue and the output port. The present invention is based on an SDN architecture, and the communication tunnel establishment is accomplished by the SDN controller. In addition, based on a DSCP field in an IP header of the SDN flow, the communication tunnel is established, the priority queue is specified, and end-to-end QoS service is provided.