%A SHI Shao-ping, ZHUANG Lei and YANG Si-jin %T SDN Optimization Algorithm Based on Prediction and Dynamic Load Factor %0 Journal Article %D 2017 %J Computer Science %R 10.11896/j.issn.1002-137X.2017.01.024 %P 123-127 %V 44 %N 1 %U {https://www.jsjkx.com/CN/abstract/article_1019.shtml} %8 2018-11-13 %X This paper studied the adjustment of flow table in the software defined networking (SDN).A SDN optimization of the flow table algorithm (SOOTFTA) based on prediction and dynamic load factor was proposed to address the problem that switch do not have enough space in the flow table for newly arrived flows.Firstly,the SOOTFTA collects the various newly arrived flows during per unit of time.Based on the information,the SOOTFTA estimates the number of newly arrived flows in the next time unit by using the second moving average method (SMA).Finally,the SOOTFTA dynamically adjust the idle timeout of the flows in the table based on the dynamic load factor.Experimental result show that the flow table matching rate and data forwarding rate are improved by using the proposed SOOTFTA,increasing the number of activities in the flow table.