Study And Implementation Of Network Performance Measurement Based On Active Probing

With the increasing development of Internet applications, the scale of IP network expands continuously, the network bandwidth increases in double and its structure becomes more and more inhomogeneous and complex. In order to understanding the behavioral model of IP network, providing scientific management and effective control to the network, it will be of great significance for study in precisely and real-time network measurement.Network measurement can be categorized into active and passive measurement. Because of being able to measure network end-to-end performance and being deployed easily, the active measurement is widely used in network measurement. However, current active measurement tools are not well suited to the network measurement task, mostly because the protocols that Measurement packets can be encapsulated have not been designed for measurement of the modern Internet. Aiming at solving the problems, network researchers proposed a new scheme, IPMP protocol, which is specifically designed for network measurement.First, this paper presents several current active network measurement techniques, analyses their limitations, and discusses the characteristics of IPMP protocol for network measurement. After that, this paper presents the implementation of IPMP protocol in FreeBSD operating system based on the IPMP protocol definition in the latest Internet draft. Second, according to the existing network bandwidth measurement theory, this paper proposes a new methodology for bandwidth measurement using the characteristics of IPMP protocol. At last, this paper researches the content, methodology, and metrics of performance testing in network application level.