Research And Implementation Of Dynamic Threshold And Topology Discovery Algorithm For Agricultural Credit Network Management System

As the rapid development of Internet at present,the network is becoming more and more complex,the scale of the expansion,people on the complex,heterogeneous network management requirements are increasingly high.With the development of the banking industry,the banking institutions rely on the network to carry out the information of the data.All kinds of business systems are transmitted in the network transmission line,which has a strong dependence on the information system.In order to be able to manage and create a network of intelligent banking management,this paper presents the research on the related technologies of network management system based on SNMP protocol.In order to get rid of the subjective and limitation of the threshold value,the dynamic threshold value is set up.By using genetic algorithm function,the optimal solution can be automatically generated as a dynamic threshold value.At the same time,using ICMP,RIP,SNMP,ARP and other network protocols to achieve a network topology self discovery function,in order to better meet the needs of the bank's network monitoring management system to its own security and management.In the process of studying the function,the routing problem is encountered,and the method of bidirectional TRACEROUTE is used to solve the problem.At the same time,in the banking network architecture combined with security management,in the system design,considering the integration of access control functions.That is,after the discovery of network node or device,it can be determined by the access to its legitimacy,if the "legal",will be successful access to the network and the formation of the final topology,such as "illegal",then the system determines its "illegal access",not only will not carry out the end of the topology discovery,the node from the network has achieved physical security.In the process of carrying out the two functional techniques,the dynamic threshold setting problem is chosen to obtain the dynamic optimal solution;the network topology discovery function is combined with SNMP protocol and program,and the TRACEROUTE method is used to accomplish the topology discovery of Liaoning agricultural letter.