SDN Flow Entry Adaptive Timeout Mechanism based on Resource Preference

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Li, Ziyong^1 ; Hu, Yuxiang^1 ; Zhang, Xueshuai^1

National Digital Switching System Engineering and Technology Research Center, Zhengzhou

450002, China^1

关键词: Computing resource;    Data flow;    Flow tables;    Network control;    Network throughput;    Timeout mechanism;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/4/042018/pdf
DOI  :  10.1088/1757-899X/569/4/042018

来源: IOP

【 摘 要 】

Software-defined networking brings rich and more efficient means to network control management. However, the fixed timeout mechanism of flow entry causes the waste of flow table resources and controller computing resources. This paper proposes an SDN flow entry adaptive timeout mechanism. The mechanism allocates a suitable timeout for different flows based on the characteristics of the data flow, and dynamically adjusts idle timeout value to prevent the flow table from overflowing. The experimental results show that the proposed adaptive timeout mechanism can make full use of flow table resources and controller computing resources to achieve higher average network throughput.