Active Measurement Module Design For The Sla-run Monitoring Systems

With the continuous development of network technology and the continuous expansion of user needs, the new network services endless. In a certain sense, these services in the survival and development of the service depends largely on the availability and performance requirements with the match, including the performance requirements of network service performance requirements, but also performance requirements. In fact, the general users, they are not concerned about how services are run and how to achieve, and care only about their own sense of the quality of service. The network quality of service driven by the expectations of users and service providers consultations specific quality of service levels, which are usually adopted by SLA (Service Level Agreement) to achieve.In this paper, first of all note the research papers on the background and main content, or for the operation of the network SLA monitoring system which the initiative measurement modules SLA parameters of the definition and measurement of SLA management is the key, which is the initiative measure certain parameters must be measured by the method. The first chapter, the second chapter focuses on the SLA and active measurements definition of the concept and the development of research related to the status quo. SLA is a recently emerging concept, there are many institutions at home and abroad in a number of relevant studies, research results mixed. Application SLA from abroad should be better in terms of domestic, but after several years of continuing efforts to promote the concept of SLA, the domestic telecommunications service providers clearly understand that the importance of quality of service guarantees, in some industries has been signed SLA agreement and are well supported. At this stage to date, most of the domestic and international network measurement system have achieved active measurement capabilities, the importance of the initiative measure that glimpse.In view of this system in delay, delay jitter, packet loss rate, connectivity, and other measurement parameters, how to achieve their definition, measurement, in the papers the third chapters and the fourth introduced. In which compared of the ITU-T and IETF defined-parameters, choose related parameters of Active Measurement .The initiative has been introduced measurement agreement, and gives its advantages and disadvantages. Put forward specific initiatives to achieve measurement programme, and the other is rping (Cisco router remote ping), including the need to set up early, such as measurement cycle, measuring packet size parameters, timeout, etc. Another end-to-end delay is measured, there are certain environmental restrictions. In software, briefed the overall system architecture and Active Measurement module in which the location, then in the clear and specific monitoring of the environment, in accordance with the initiative by monitoring and measuring implementation of the programme is to monitor the results and statistical analysis.Finally, to sum up this paper's work, the SLA parameters of the proposed initiative measurement modules further study some of the views.