Network Fault Diagnosis Based On The Network Fault Tester Software Design

The growing scale and complexity of the network has put forward an increasing challenge for network operation, managament and maintainance. The network problem testing instrument is a major tool for network monitoring and management. It could not only gets the traffic data of network nodes, assesses the performance of network facilities such as routers, switches, workstations by testing their connectivity to servers, switches or routers, tests the network utilization, collision and mistakes, but also offers professional explanations for testing results. Therefore, the network problem testing instrument is widely applied to the research and development, installation as well as daily maintainance of the network.Focusing on software design of the network problem testing instrument, and based on principles of the network structure, this dissertation presents a series of technical solutions and realization approaches with vivid flow charts empirical debugging results on the basis of a thorough analysis of software design of the network problem testing instrument. In addition, it also probes into issues as software optimization, migration, debugging and exception handling mechanisms. The main contributions of this dissertation are as follows:1) Forms a scheme of network maintance as well as realiztion of the problem testing software after a thorough analysis of the regular network problems and a pertinent comment on the merits and demerits of the network detection and maintainance methodology.2) Presents approaches to the realization of principles of network health testing, network resources list and connectivity testing in the network problem testing software, and gives a in-depth analysis of the key issues in design process with vivid flow charts and convincing testing results.3) Ponits out possible problems and offers feasible solutions in the migration and development of the embedded software from six aspects, touching upon byte order, semaphore, coding optimization, etc.4) Discusses the exception handling mechanisms and debugging process for the sake of improving software robustness...