SNMP Ping

System.NetworkManagement.Node.IsSNMPResponsive (UnitMonitor)

This monitor uses SNMP to determine whether the monitored network device is available

Knowledge Base article:

Summary

This monitor uses SNMP to determine whether the monitored network device is available. The monitor queries to test whether the network device is able to respond to a basic SNMP request in a timely manner. This monitor has two possible states:

Configuration

The following options can be configured on this monitor:

Option

Definition

Default

Interval

Amount of time in seconds between checks of the device status

240 seconds

Number of retries

Number of attempts in each monitoring interval before the interval's sample is discarded

3

Number of samples

Number of consecutive samples before the monitor changes state

3

Timeout

Amount of time in milliseconds to wait for a response from the device before the sample times out and a new attempt is made to sample the value

3,500 milliseconds

Causes

A warning state for this monitor indicates that the target network device is not responding to SNMP requests.

Resolutions

Use the Health Explorer to check the details for the state change on the State Change Events tab for the monitor. This data shows the Object Identifier (OID) and the value that the device returned in response to the query. Consult the device manufacturer's documentation for the device's specific OID for more information on the problem and troubleshooting procedures.

Element properties:

TargetSystem.NetworkManagement.Node
Parent MonitorSystem.NetworkManagement.Node.IsResponsive
CategoryAvailabilityHealth
EnabledTrue
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeSystem.NetworkManagement.HealthStateSNMPAvailabilityMonitorType
RemotableTrue
AccessibilityPublic
RunAsDefault

Source Code:

<UnitMonitor ID="System.NetworkManagement.Node.IsSNMPResponsive" Accessibility="Public" Enabled="true" Target="NetworkLibrary!System.NetworkManagement.Node" ParentMonitorID="System.NetworkManagement.Node.IsResponsive" Remotable="true" Priority="Normal" TypeID="System.NetworkManagement.HealthStateSNMPAvailabilityMonitorType" ConfirmDelivery="false">
<Category>AvailabilityHealth</Category>
<OperationalStates>
<OperationalState ID="DeviceUp" MonitorTypeStateID="MTSDeviceSuccess" HealthState="Success"/>
<OperationalState ID="DeviceOperDown" MonitorTypeStateID="MTSDeviceError" HealthState="Warning"/>
</OperationalStates>
<Configuration>
<Interval>300</Interval>
<NoOfRetries>3</NoOfRetries>
<NumberOfSamples>3</NumberOfSamples>
<Timeout>3500</Timeout>
<OID>.1.3.6.1.2.1.1.1.0</OID>
</Configuration>
</UnitMonitor>