Improved Design And Implementation Based On OpenVirteX Network Virtualization Platform

With the coming of the 5G era,the scale of Data Center will continue to increase,and the types of business carried will continue to increase.Data Center Network is facing new challenges in network management and resource scheduling.It is unreasonable to manage the complex network of Data Center in the 5G era by traditional way.The combination of Software Defined Network(SDN)and Network Virtualization provides a new idea to solve this problem.According to the above problems,relying on the project of the 54 th Research Institute of China Electronics Technology Group Corporation,the routing strategy used in OpenVirteX software is not suitable for the requirements of high reliability and low latency communication scenarios in the 5G era.Moreover,when using OpenVirteX to create a virtual network,the process is complex and inflexible,which is not conducive to the large-scale deployment of the technology.In order to settle the above problems,A study of OpenVirteX,which is a network virtualization platform based on SDN architecture,has been carried out.The main contributions are as follows.Firstly,the analysis of the inherent routing system of OpenVirteX shows that the system only provides SPF algorithm based on hop number,which can not meet the requirements of high reliability and low latency communication scenarios in 5G era.Aiming at this problem and considering the actual needs of the project,this paper proposes an improved ant colony routing strategy based on the network state measurement module,that is,an improved ant colony routing algorithm which adds a network state measurement module and supports the QoS function to the inherent routing system of OpenVirteX,so that the algorithm can make use of the real-time data provided by the network state measurement module to select a high reliability and low latency transmission path.Experiments show that the improved QoS routing strategy has lower delay and packet loss rate than the physical path selected by the inherent SPF algorithm,and can meet the needs of high reliability and low latency communication scenarios in 5G era.Secondly,in the application process,it is found that when users use OpenVirteX to create a virtual network,they need command line to implement it.The process is complex and not flexible enough,which leads to poor user experience.Aiming at this problem and relying on the actual engineering background,this paper realizes a cloud virtual network system according to the programmable characteristics of SDN architecture.The system mainly includes the virtual network management module based on OpenVirteX and the virtual network presentation module based on ONOS controller.Experiments show that users can use cloud virtual network system flexibly and conveniently to create and view virtual network visually.Finally,the SDN simulation experiment platform based on OpenVirteX is built to verify the experiment.The experimental results show that the cloud virtual network system can visually create a virtual network with high reliability and low latency.The secondary development of OpenVirteX has met the project requirements.