Weighted Round-Robin Load Balancing Algorithm for Software-Defined Network

Abstract

High demand of Internet by the society and digitization of most of the civil services have increased the complexity of core network. To make easy the life of administrator of network, new technology is required and software-defined networking (SDN) is better solution. SDN provides ease of configuration, flexibility, agility, and security to manage the network. The main goal of SDN is separating the network configuration from traffic forwarding. This leads to gain control over the devices to forward required amount of traffic within the network. Load balancing in the Internet is essential to keep the performance of network at the expected level. SDN balances the load in the network more efficiently than traditional network. Authors propose the distributed load balancing algorithm using weighed round-robin (WRR) mechanism. Analytical model of WRR is proposed to represent the task of load balancing algorithm. Mininet emulator is used to set up the experimental test bed. Throughput and delay parameters are used to test the performance of the proposed algorithm. Results show the reduction of delay and increase the availability of bandwidth.