Based On The SNMP Protocol Research And Implementation Of Network Topology Discovery

Computer went through a process from single to the development of the network, the stand-alone computer maintenance and management work are artificial, and can only run a simple application and cannot run all kinds of dedicated service, can’t share data. With the rapid development of computer technology, computer network arises at the historic moment, the construction of computer network needs support of network equipment. These network devices, such as hosts, routers, switches, and a wide range of geographical location are widely distributed. Make the computer network management is very difficult. In order to simplify the complex network management, network management can standardize the SNMP protocol was proposed, namely the simple network management protocol.In this paper, on the basis of existing research results, and then the simple network management protocol and spanning tree protocol demonstrates simple, Ethernet data link layer, network layer, and automatically discover network topology based on SNMP protocol, this paper proposes a new algorithm of automatic topology discovery based on SNMP protocol. And then used in the development process of the design of the improved algorithm in detail, in the form of a flowchart and ICONS to rigorous analysis algorithm process and data, and introduces in detail how to use Borland Developer Studio 2006 tools and Pascal language and SQL language and spanning tree protocol (STP) for technical guidance, the rapid development of a reliable, universal based on simple network management protocol (SNMP) network topology discovery network management software, and introduces the main function of the software.Agent process custom equipment MIB information, network host query devices of the type and the ID value of the information, such as equipment through the link management protocol (SNMP) to complete the network devices in a network, network host to collect the equipment in the topology information, combined with the improved algorithm automatically find equipment and accurate appear in the corresponding position of network topology, effectively solves the redundancy backup lines caused by the loop in the network problems, to ensure the efficient and reliable operation of network.At present the algorithm has been in this company has been widely used in communications products, with the increase of application and test also shows some deficiencies, such as increase the setting of background images in the topology, increase the topology of the print function will make the algorithm be more perfect, in addition with the rapid development of WEB technology, the SNMP technology application in the WEB is becoming more and more important, in order to make the algorithm has been widely used, the next step to increase in WEB technology based on the application of the algorithm, convenient for the user in the client browser side for network management.