Central control and simple forwarding elements

Control and management plane hardware and software dedicated resources, which resided on the switches in traditional network architecture, have now been migrated to the controller. This new architecture presents a forwarding element, which maximizes the overall resource management in the topology as the hardware processes less complex codes for forwarding the traffic. These complex algorithms now exist in the controller, and traffic forwarding decisions are made from them, which communicates the best forwarding path for every packet to the forwarding element through a secure channel from the controller to the forwarding elements. These characteristics allow a simpler ASIC to be incorporated into the forwarding elements existing in an SDN infrastructure. This also allows the provisioning of ample resources with respect to the growth in the network size.