Research And Implementation Of The Operational State Of The Sla-oriented Network And Link Performance Analysis Technology

With the continuous development of Network technology, customer demand for network services also expanded. The face of peer competition, the service types and qualities of service providers determine the survival and development. When a customer access to the services of interest, they often ask for the corresponding Quality of Service such as IP network bandwith and reach Service Level Agreement with Service Provider or Network Operation. A Service Level Agreement is a formal negotiated agreement between two parties. It is a contract that exists between the Service Provider and the Customer.In order for SP to follow this agreement, we must have a SLA-based network monitoring system to monitor the network, keep abreast of the current network and application services running conditions.This paper firstly outlines the concept of SLA, and then it's research background and current study status are briefly described. Meanwhile, analysis network management role in the network monitoring. The SLA parameters selection and it's affection to the NPM (Network Performance Metrics, network performance indicators) in SLA-based network monitoring system are analyzedThe state of the link affects the normal proceeding directly; the deficiency of the traditional topology monitoring algorithms is long link monitoring time. In order to improve the real-time performance, in this paper the traditional topology monitoring algorithms are improved. The QoS parameters of the link are the key indexes when measure a link or the whole network. In this paper, we designed the link efficiency analysis module. The main functions of it is turn the NPM(Network Performance Metrics) collected from bottom layer into the corresponding link QoS parameters and store them in the database.Dynamic display network situation is need in the monitoring of the SLA business service level in the Monitor-Center between the SP and Customes. In this paper a dedicated client display is designed to provider intuitive control interface for network administrators. They in real time,dynamic and intuitive understanding of the monitoring network service levels, when the network QoS decreases, SP in time adjust before in violation of the SLA signed with Customers.Based on the above designs, we dynamic monitoring the UESTC Qingshuihe campus network and analysis the data got. Verify the effectiveness and integrity of the related designs.