標題: Performance modeling and analysis of TCP and UDP flows over software defined networks
作者: Lai, Yuan-Cheng
Ali, Ahsan
Hossain, Md Shohrab
Lin, Ying-Dar
資訊工程學系
Department of Computer Science
關鍵字: Software defined networking (SDN);Performance modeling;Queueing model;TCP;UDP
公開日期: 15-三月-2019
摘要: Software Defined Networking (SDN) decouples the control plane from the data plane, thereby facilitating network virtualization, dynamic programmability and flexibility in network management. Previous studies on SDN modeling focus only on packet-level arrivals. However, if flow-level arrivals are not also considered, the model cannot properly reflect the true probability of packets being sent to the controller. Accordingly, the present study proposes two analytical models for predicting the performance of TCP and UDP flows over SDN, respectively, given the assumption of both flow-level arrivals and packet-level arrivals. In constructing the models, the switch and controller are considered jointly and four-dimensional states are used to evaluate the steady-state probabilities of the states. Analytical formulae are derived for the average packet delay and packet loss probability of the TCP and UDP flows. Simulation results very well match with the analytical ones, thereby validating our analytical models. The results show that TCP significantly outperforms UDP over SDN architectures. In particular, TCP reduces the packet delay by 12 similar to 50% and the packet loss probability by 25 similar to 100%.
URI: http://dx.doi.org/10.1016/j.jnca.2019.01.010
http://hdl.handle.net/11536/148982
ISSN: 1084-8045
DOI: 10.1016/j.jnca.2019.01.010
期刊: JOURNAL OF NETWORK AND COMPUTER APPLICATIONS
Volume: 130
起始頁: 76
結束頁: 88
顯示於類別:期刊論文