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DNS64 total dropped queries per second

DNS64_Service_Total_Dropped_Second (UnitMonitor)

This is a warning alarm generated because the "Total Query Dropped/sec" counter (under the object "Forefront UAG DNS64" in the performance monitor tool) exceeded a defined threshold. "Total Query Dropped/sec" is the number of queries dropped per second by DNS64, usually due to full queues. This alarm is cleared when the counter returns to healthy levels.

Knowledge Base article:

Summary

This is a warning alarm generated because the "Total Query Dropped/sec" counter (under the object "Forefront UAG DNS64" in the performance monitor tool) exceeded a defined threshold. This alarm is cleared when the counter returns to healthy levels.

Causes

This alarm indicates that the number of queries dropped per second by DNS64 is reaching warning levels.

Element properties:

TargetMicrosoft.Forefront.UAG.DNS64
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledTrue
Instance NameForefront UAG DNS64
Counter NameTotal Query Dropped/sec
Frequency300
Alert GenerateFalse
Alert Auto ResolveTrue
Monitor TypeSystem.Performance.ConsecutiveSamplesThreshold
RemotableTrue
AccessibilityPublic
RunAsDefault

Source Code:

<UnitMonitor ID="DNS64_Service_Total_Dropped_Second" Accessibility="Public" Enabled="true" Target="Microsoft.Forefront.UAG.DNS64" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Performance!System.Performance.ConsecutiveSamplesThreshold" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <OperationalStates>

    <OperationalState ID="ConditionFalse" MonitorTypeStateID="ConditionFalse" HealthState="Success"/>

    <OperationalState ID="ConditionTrue" MonitorTypeStateID="ConditionTrue" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <ComputerName>$Target/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>

    <CounterName>Total Query Dropped/sec</CounterName>

    <ObjectName>Forefront UAG DNS64</ObjectName>

    <InstanceName/>

    <AllInstances>true</AllInstances>

    <Frequency>300</Frequency>

    <Threshold>5</Threshold>

    <Direction>greater</Direction>

    <NumSamples>3</NumSamples>

  </Configuration>

</UnitMonitor>