A Comprehensive Survey on Software-Defined Networking Load Balancers

Software-Defined Networking (SDN) is considered as one of the most important concepts that separate network control plane over data routing plane. Where it showed many benefits compared to the traditional case of controlling network resources, however, the distribution of traffic in networks SDN affects efficiency and brings up a set of challenges. Therefore, it has become necessary to use Load Balancing (LB) techniques to improve efficiency in SDN. In this paper, we make a comprehensive survey of LB technology in SDN. As well as common load balancing techniques data plane-LB techniques, control plane-LB techniques, other aspects of data plane/control plane-LB. Finally, we highlighted existing SDN-LB challenges and future research directions on SDN-LB techniques.