The rapid development of the Internet and the rapid growth of network scale have made the demand for network management more and more important. This requires the management of all devices and protocols in the network. The development trend of today\'s network management methods is to be more intelligent and automated. This requires network management software to reduce the workload of network administrators to the greatest extent, so that the work of network administrators can be transformed from complex management network operations to management network tools. The SNMP (Simple Network Management Protocol) protocol has been supported by manufacturers due to its easy implementation and extensive TCP/IP application foundation. The cross-platform characteristics of the open source NetSNMP software have made it widely used in network devices. However, in the past, network management based on SNMP was usually done through command lines or simple network management tools. The management operation was cumbersome and the collected results were relatively abstract. The Opmanager software produced by AdventNet not only has powerful graphics and chart generation capabilities for SNMP monitoring data, but is also simple and easy to use. Combined with NetSNMP, it can well realize enterprise-level network management functions. Therefore, this article uses Opmanager network management software to implement SNMP graphical monitoring based on embedded Linux platform. First, the SNMP protocol is introduced, including the overview of the SNMP protocol and the specification of the SNMP protocol. Secondly, two embedded Linux development platforms based on ARM7 and ARM9 were built, and their cross-compilation environments were established on Linux PC. The NetSNMP agent program was ported to these two ARM platforms, and the ported programs were tailored and optimized to run on embedded devices. Finally, the graphical monitoring of embedded devices was realized through Opmanager network management software, and on this basis, custom monitoring items were expanded so that Opmanager management software can poll them and generate real-time graphics. Finally, Opmanager defined them as main views on the snapshot main page and displayed them in the main window.
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