This monitor checks the state of a device.
The device currently being monitored is not responding to an SNMP GET for the System Name of the device.
This monitor is configured to get the System Name for this device is null. Below are the details of the Object Identifier (OID) that is queried via an SNMP GET
Symbolic Name | OID | Description |
---|---|---|
iso.org.dod.internet.mgmt.mib-2.system.sysName | .1.3.6.1.2.1.1.5.0 | An administratively-assigned name for this managed node. By convention, this is the node's fully-qualified domain name. This is defined in RFC 1213 |
This can happen when:
The device is offline
The device is not responding to SNMP GET
The community string has changed and this Monitor has not been updated
Below are some basic troubleshooting steps to determine if the device is online
Ping the target device. If the device is not pingable, the device may be offline or there may be a firewall blocking ICMP communication.
If pinging the device was successful, try to ensure you have the correct community string for the device. You will have to contact the Network Administrator for the community string for this device.
Target | Microsoft.SystemCenter.NetworkDevice |
Parent Monitor | System.Health.AvailabilityState |
Category | PerformanceHealth |
Enabled | True |
Alert Generate | False |
Alert Auto Resolve | False |
Monitor Type | Microsoft.SystemCenter.NetworkDevice.CheckDeviceState |
Remotable | True |
Accessibility | Public |
RunAs | Default |
<UnitMonitor ID="Microsoft.SystemCenter.NetworkDevice.CheckDeviceStatus" Accessibility="Public" Target="Microsoft.SystemCenter.NetworkDevice" Enabled="true" TypeID="Microsoft.SystemCenter.NetworkDevice.CheckDeviceState" ParentMonitorID="Health!System.Health.AvailabilityState">
<Category>PerformanceHealth</Category>
<OperationalStates>
<OperationalState HealthState="Success" MonitorTypeStateID="DeviceUp" ID="Success"/>
<OperationalState HealthState="Error" MonitorTypeStateID="DeviceDown" ID="Error"/>
</OperationalStates>
<Configuration>
<Interval>120</Interval>
<IsWriteAction>false</IsWriteAction>
<IP>$Target/Property[Type="Microsoft.SystemCenter.NetworkDevice"]/IPAddress$</IP>
<CommunityString>$Target/Property[Type="Microsoft.SystemCenter.NetworkDevice"]/CommunityString$</CommunityString>
<Version>$Target/Property[Type="Microsoft.SystemCenter.NetworkDevice"]/Version$</Version>
<SnmpVarBinds>
<SnmpVarBind>
<OID>.1.3.6.1.2.1.1.5.0</OID>
<Syntax>1</Syntax>
<Value VariantType="8"/>
</SnmpVarBind>
</SnmpVarBinds>
</Configuration>
</UnitMonitor>