Quality of Service (QoS)-Based Network Resource Allocation in Software Defined Networking (SDN)

With the rapid growth of network technologies, the development of the domain is shifting from providing connectivity to providing a number of services and applications with desirable quality. These applications and services have different service features and their own quality demand. Therefore, implementing a network which can provide accessible performance for all traffic types becomes a very hard challenge. In this paper, we present a resource allocation scheme for bandwidth allocation that satisfies Quality of Service (QoS) requirements for all priority flows by using Open vSwitch, based on Software Defined Networking (SDN). The main goal of this system is to provide high QoS performance for high priority flows. The effectiveness of the proposed scheme is described on the emulated SDN network. The proposed scheme is compared with the conventional shortest path scheme, multipath routing scheme in simple network topology. The results of the experiments showed that the proposed approach achieves better performance in terms of throughput, end-to-end delay and packet loss rate than that of traditional shortest-path and multipath routing.