Effective Traffic Rerouting for Video Streaming in Software Defined Networking

Video streaming exceeds all other traffic types on the internet. Now, it occupies a significant portion of total internet traffic. The transmission mechanism used by the video stream affects not only network traffic but also the users' Quality of Experience (QoE). Software Defined Networking (SDN) is a manageable, programmable, adaptable, and cost-effective emerging network architecture, which is very suitable for the dynamic natured high-bandwidth of modern applications. The OpenFlow protocol is a fundamental element in the creation of SDN solutions. Traffic engineering is a favorite mechanism used by network administrators when optimizing the existing networks and providing more services to customers is needed. This paper proposes a traffic rerouting approach in the video streaming flow management framework on SDN architecture, which can effectively reroute video streaming traffics to reduce packet loss and improve bit rates. It can calculate the current link utilization over the network links and it uses least-cost path rerouting rather than the default routing, reactive forwarding in the ONOS controller. The proposed method is validated by using the popular Mininet network emulation environment and OpenFlow features. The experimental results verify that the improvement of performance by the measurement of video streaming bit rates and packet loss of video traffic.