Design And Implement Of Enterprise Network Management System Based On SNMP

With the rapid development and extensive application of the networktechnology, network has already come into many fields in peoples’life. At thesametime, the scale and the complexity of the network is also growing. Forthe needs of a stable and reliable network, a more flexiable networkmanagement tool is demanded to help people to monitor network status.Nowdays network management is a very important issue of the research ofnetwork technologies.Firstly, this thesis deseribes the concept and basic functionality ofnetwork management and analyzes the logical modes of NMS(NetworkManagement System) in detail, and then presents the current status anddeveloping trends of the NMS. Because of topology discovery plays animportant role in NMS, this thesis researches network topology discoveryalgorithm in detail. The network topology discovery algorithm includinglogical (layer-3) topology and physical (layer-2) topology.This thesis analysethe principle of different topolpgy methods, and according to theirshortcoming, point out a algorithm based on SNMP(Simple NetworkManagement Protocol). SNMP is the actual practical network management standard of TCP/IP. Its main idea is to define a uniforminterface and protocolto equipments of different types, different manufacturers or different modelsto allow people to manage the network with uniform appearance of the face.Finally, base on the reltopology discovery realization, the main functionsof this system are asfollows: collect the network configuration information,collect the application information and performance parameter according tothe dynamic-set sample frequency; provide alarmfunction.