A Survey on Software-defined Networking Concepts and Architecture

Software defined networking (SDN) has been the buzzword among networking professionals since the last few years. The three tiered architecture of SDN promises to simplify the network management. Unfortunately, a significant amount of research that is going on in this field is focused on datacenter networks. The societal impact that this technology can bring about mostly in developing countries has not been thought of. After a brief survey on SDN we were able to outline the concept, architecture, implementation and applications for software defined networking. An extensive survey was made with respect to the need to handle the issues of network traffic, inability to scale, virtualization, and low-performance of current network architecture by adopting SDN, which decouples the network control and forwarding functions, thus enabling the network control to become directly programmable. An analysis on the research undertaken by various scientists showcased the importance of SDN and its advantages over the traditional architecture.