Model to Improve Scalability and Quality of Services in Software Define Networking

Software Defined Networking (SDN) is platform that support network application more efficiently. SDN is successful because it decoupled the control plane from its data plane. Detachment of these two-planes improved dynamic configuration, controller programmability, centralized and decentralized network. In this study Distributed SDN approach is used to avoid scalability and robustness issue. The SDN controllers can be centralized, also it works on multiple nodes that can be physically distributed. Distributed nodes communicate with each other and improve performance of network to assist data flow. When flow arrives through end devices to any data plane in Distributed SDN, our model will support the data plane to increase controller response time. Also, controller will check, whether data needs to prioritize flow to send locally or globally with the help of Elephant or Mice flow. This model is used to reduces the controller work load, response time and manage quality of services (QoS) between controllers.