Role-based multiple controllers for load balancing and security in SDN

Software Defined Networks (SDNs) are gaining success in modern IT. While using SDN, enterprises and the research sector have encountered many challenges related to security and exposed weaknesses in heavy load management systems. In this paper, three architectures are proposed which are designed to work with all existing OpenFlow, OpenStack and OpenDaylight platforms. These architectures improve the controller framework without any interruption to network operation. At the same time, some of the key issues related to load balancing and security in a nSDN framework will be addressed. This work will support the IT community not only by reducing the cost of SDN network architecture but also by reducing the cost of load balancing and security that are very important in the networking world.