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Number Of DNS Resolution Failures

Microsoft.LS.2019.Monitoring.UnitMonitor.ThresholdPC.AVConf.PERF_MSipConnections_NumberOfDNSResolutionFailures (UnitMonitor)

Knowledge Base article:

Summary

The total number of DNS resolution failures

Causes

The failure could happen because there is no A record specified in DNS for the host name being resolved

Resolutions

Make sure that there is an A record specified in the DNS for the host name that is being resolved

Element properties:

TargetMicrosoft.LS.2019.Component.AVConf
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledTrue
Alert GenerateTrue
Alert SeverityError
Alert PriorityHigh
Alert Auto ResolveTrue
Monitor TypeMicrosoft.LS.2019.Performance.Single.DeltaThresholdMonitor
RemotableTrue
AccessibilityPublic
Alert Message
[Skype] The total number of DNS resolution failures
Perf Object Name:
Perf Counter Name: {0}
Perf Counter Value: {1}
Error Threshold: 1

Delta Window Size: 4
Instances to include (wildcard supported): *avmcusvc*
Instances to exclude (wildcard supported): None
Please see the 'Product Knowledge' and the 'Alert Context' tab on Alert Properties view for more information.
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.LS.2019.Monitoring.UnitMonitor.ThresholdPC.AVConf.PERF_MSipConnections_NumberOfDNSResolutionFailures" Accessibility="Public" Enabled="true" Target="SFBDiscovery!Microsoft.LS.2019.Component.AVConf" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Microsoft.LS.2019.Performance.Single.DeltaThresholdMonitor" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Alert_The_total_number_of_DNS_resolution_failures">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>High</AlertPriority>

    <AlertSeverity>Error</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/CounterName$</AlertParameter1>

      <AlertParameter2>$Data/Context/Value$</AlertParameter2>

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.ThresholdPC.AVConf.PERF_MSipConnections_NumberOfDNSResolutionFailures_OverThreshold" MonitorTypeStateID="OverThreshold" HealthState="Error"/>

    <OperationalState ID="Microsoft.LS.2019.Monitoring.UnitMonitor.ThresholdPC.AVConf.PERF_MSipConnections_NumberOfDNSResolutionFailures_UnderThreshold" MonitorTypeStateID="UnderThreshold" HealthState="Success"/>

  </OperationalStates>

  <Configuration>

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

    <CounterName>SipEps - NumberOfDNSResolutionFailures</CounterName>

    <ObjectName>LS:SipEps - SipEps Connections</ObjectName>

    <AllInstances>true</AllInstances>

    <Frequency>900</Frequency>

    <IncludeInstances>

      <RegExExpression>

        <ValueExpression>

          <XPathQuery Type="String">InstanceName</XPathQuery>

        </ValueExpression>

        <Operator>MatchesWildcard</Operator>

        <Pattern>*avmcusvc*</Pattern>

      </RegExExpression>

    </IncludeInstances>

    <ExcludeInstances/>

    <Threshold>1</Threshold>

    <NumSamples>4</NumSamples>

  </Configuration>

</UnitMonitor>