Design And Implementation Of Network Performance Measurement System Based On NFV

In recent years,Network Function Virtualization(NFV)technology has promoted the development of telecommunication industry,injected new impetus into the development of the Internet,and attracted the attention of industry and academia.In order to deeply research the inherent laws of NFV network,the quantitative analysis of NFV network and its application using network measurement technology can provide a means for the development of NFV technology;combining with the characteristics of virtualization technology,a new network measurement technology is studied to provide a new method for the development of network measurement technology.Based on the characteristics of NFV technology and IP technology,how to research and develop NFV network measurement system with flexible deployment structure and self-customizable functions is a technical problem which currently needs to be solved.This dissertation focuses on the anomaly detection problem under the NFV network,and mainly focuses on the key technologies of rapid deployment,centralized control and anomaly detection of network measurement systems.Based on virtualization technology,a new network measurement system is designed and a prototype system is implemented.The main work of the thesis includes:(1)Combining the relevant technical characteristics and requirements analysis of NFV network,the overall architecture of a software-defined network measurement system is proposed,and the main functional modules and workflows are designed.(2)The function of automatic deployment of NFV network measurement system is designed.The system can flexibly deploy the middle box of network measurement system by interpreting and executing the customized XML configuration file.The experiment shows the feasibility of this function.(3)The function of the distributed control network measurement middlebox is designed.By interpreting the execution strategy file,the measurement intermediate box can work together.The experiment shows the feasibility of the function.(4)We design and implement a customized NFV performance anomaly monitoring system,in which the PCA-based online real-time network anomaly detection method can analyze the RTT performance matrix in real time and detect network anomalies,which improves the practicability of the system.