Network state monitoring system

Abstract

A device monitoring system for a communication network, wherein an SNMP monitoring unit obtains, from a group of devices to be monitored, state information for each device thereof so as to monitor the state of each device. A command monitoring unit uses a monitoring command to obtain the state information for each of the devices. A monitoring management unit checks the state of monitoring by the SNMP monitoring unit for each device, and if there is a device for which acquisition of state information therefor has failed, the monitoring management unit sets that device as a new monitoring target and uses the command monitoring unit to transmit the monitoring command. Monitoring results are updated with the state information that is obtained by means of the command, and the reliability of fault monitoring is improved as a result.

Description

technical field [0001] The present invention relates to a monitoring system, for example, to a monitoring system for monitoring the status of devices existing on a network. Background technique [0002] Various devices exist on a communication network such as an IP (Internet Protocol) network. In order to monitor the status of these devices, for example, the following failure monitoring method has been conventionally applied. That is, the failure monitoring method is, for example, that the monitoring device refers to the information stored in the MIB (Management Information Base: Management Information Base) of the monitored device based on SNMP (Simple Network Management Protocol: Simple Network Management Protocol), Alternatively, the monitoring device analyzes the inherent command response results between the monitoring device and the monitored device to monitor the device status of the monitored device, and displays the device status as a monitoring result on a display ...

AI Technical Summary

Problems solved by technology

[0005] However, sometimes, for example, a failure occurs in the communication of SNMP and the SNMP agent on the monitored device

When the monitoring device uses SNMP to grasp the status of the monitored device as in the past, when this failure occurs, the monitoring device cannot finally grasp the status of the monitored device

Both of the two prior art technologies cited as reference documents are technologies using SNMP. Therefore, in the monitoring device of the monitoring system to which this technology is applied, there is a problem that the status of the monitored device cannot be grasped when a failure related to SNMP occurs.

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