SDN based architecture for QoS enabled services across networks with dynamic service level agreement

Nowadays QoS enabled real time services are demanding and dominating over Internet. However, providing end-to-end QoS requirement across Internet is still a challenge. With changing challenges and demands, service providers should be able to implement their strategic and business policies dynamically. Therefore current Internet architecture needs a change to support the present and future requirements, as well as any new innovation for better performance. The advent of Software Defined Network (SDN) is giving an opportunity to rethink and experiment with new innovations for Networking. In this paper we analyze current problems of Internet and propose a novel architecture and algorithm to address QoS across Internet with open opportunity for future enhancements by introducing dynamic relationship among service providing entities. Our simulation results reveal that proposed SDN architecture dealing with interactions among Internet service providers with dynamic Service Level Agreement (SLA) is advantageous for QoS enabled applications than the current architecture.