Centralized control of traffic flows in wireless LANs based on the SDN concept

Abstract

The paper proposes to use a solution based on software-defined networks (SDN) to control traffic flows in wireless local area networks (Wi-Fi). The paper examines the testing methods for a software-configurable wireless local area network based on the model network of the St. Petersburg State University of Telecommunications. Classify traffic based on DSCP values in the IP-headers of packets. After classification, traffic will be given priority over the OpenFlow port of the switch. This method allows for end-to-end quality support and support for traffic classification when interworking. In the course of practical experiment, the interaction of access points (AP), which are emulated in Mininet with the SDN controller, is considered. When using the OpenDaylight controller, the network topology can be controlled through the user-friendly graphical interface (GUI) of the SDN. As a result, methods were examined using DSCP values for QoS management in SDN networks.