Review of Detection and Avoidance of Interference Among Multiple Applications in Software-Defined Networks.

To provide better programmability, software-defined networks (SDN) separate the control plane and data plane. This feature facilitates the development of new network functions but brings new problems. There may be interference among multiple applications which are developed according to different requirements. SDN applications control the network by issuing flow tables, therefore interference among multiple applications may cause network failures. At present, many researchers are devoted to the correctness and reliability of SDN applications and have achieved a lot of valuable results. However, the existing reviews focus on the study of individual SDN applications, and there are few reviews of how to detect and avoid interference among multiple SDN applications. In this paper, we summarize the related works on interference among SDN multiple applications, which can be divided into two aspects: detecting interference and avoiding interference. Then we compare these works and conclude their advantages and disadvantages. Finally, we discuss the future research directions, such as automatic detection according to real-time network environment changes, and detection combining individual SDN application testing.