Design And Implementation Of Topology Discovery Subsystem Based On Wesign Platform

With the growing popularity of computer technology and the rapid development of the Internet, the growing scale of computer network, the network connection is also more and more complex, increasing requirements for network management people also. For network management, network topology discovery function significance, is the core of the network management function. WEB-based topology discovery system, enables the network administrator to bring convenience to network management for the entire network topology query the host of the network any installation WEB browser.This paper first introduces the NMS network topology discovery research status of the SNMP protocol, ICMP protocol based on OSPF protocol. Compare the use of these algorithms and analysis, as well as their respective characteristics. Based on the study of the above methods, combined with traditional network topology discovery, design optimization SNMP-based network topology discovery system.The main work of this paper include:①elaborate analysis and comparison of network topology discovery various algorithms. Analyze and compare current network topology algorithm, and pointed out that their respective characteristics, scope and practical application of the deficiencies;②focuses on the SNMP network layer topology discovery algorithm. Elaborated the principle and foundation of the SNMP algorithm, and its advantages and disadvantages;③the overall system design. Analyzing the demand from the system, the design of the design of the system overall structure of the model as well as the functions of the various subsystems;④network topology discovery system implementation. SNMP-based network topology discovery based topology discovery process, improved algorithm describes the network topology discovery subsystem classes and methods, and all activities equipment found in discovery method of improved subnet, subnet internal device subsystem is described the main classes and methods;⑤system database implementation. Database design, data persistence modules to achieve;⑥visualization of topology discovery system based on WEB. Introduce the visual layout structure topology discovery algorithms and the implementation of them; analyse the topology display system with classes; finally conduct the system testing. Conduct the system performance test based on the WEB topology discovery system’s whole function testing, the network layer topology discovery subsystem’s testing, the topology visualization algorithm testing and so on.