A New Bandwidth Management Model using Software-Defined Networking Security Threats

Abstract

Available bandwidth in network is limited, it is very critical to manage the network bandwidth efficiently. In this research, bandwidth management model based on Software-Defined Networking (SDN) architecture is examined. Through the recommended model, real-time traffic over network was given importance to approach the restricted bandwidth over non real-time traffic. SDN promises the simplification of network management compared to the traditional network. SDN architecture breaks the vertically integrated current network design and it introduces centralized network control through the SDN controller, which is considered as the greatest contribution of SDN in networking area. SDN architecture is adopted in this paper since it promotes centralized control features which enable grid programmability and supports improve network resources administration. Simulation was conducted using the EstiNet network simulator. Two groups of experiments with different situations have been conducted. Each experiment consisted of five simulations with different number of sender and receiver nodes. The first experiment simulated the traffics in a traditional networking; and the second experiment simulated the traffics in a proposed network model. In addition, bulk of the existing bandwidth was reserved to real-time traffic and the remaining quantity was reserved for non-real-time traffic. The real-time throughput results of the two different experiments have been compared to estimate the performance of the proposed SDN research model. The experiment results presented that the recommended model has successfully given urgency to real-time network traffic to approach the limited network bandwidth. As the number of nodes increases, the conventional real-time throughput of setup one and setup two decreases linearly. When nodes reach 10, the real-time ordinary throughput of setup one and setup two are 63SKBps and 473KBps respectively.