期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：4
页码：5571-5574
出版社：TechScience Publications
摘要：Bandwidth utilization is an important factor to improve the network performance. For the effective utilization of bandwidth, pathloss rate and latency should be measured. So that the application can adapt its send rate to the estimated bandwidth. To measure the path loss rate and latency between two nodes in a college campus network active measurement techniques are used. These techniques do not require prior knowledge about the network topology. The drawback of these techniques is that every device in the network must be configured to estimate the bandwidth measures like path loss rate and latency. In this paper, we propose an SDN framework for estimating the pathloss rate and latency. This framework includes features such as detecting path loss rate and measuring the latency in a college campus network. By deploying this method the loss rate and latency can be calculated using the initial packet separation and the time stamps as input. In SDN, for a single change in networks, the network configurations are changed centrally on specific controller(s) rather than configuring individual network devices. As a result, we can improve bandwidth utilization and network performance in a college campus network. Comparison of bandwidth measurements is done using iperf between traditional network and SDN, results obtained from simulation by using mininet shows better performance in SDN than traditional network.
