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High Discard Percentage

System.NetworkManagement.NetworkAdapter.HighDiscardRate (AggregateMonitor)

Aggregate monitor that rolls up discard percentage health monitors

Knowledge Base article:

Summary

This monitor is the rollup monitor for the health state of the packet discard rate. If one or more of the subordinate monitors is in a warning state, this monitor will also be in a warning state. A subordinate monitor enters a warning state if the number of discarded input or output packets exceeds the configured threshold.

Causes

A warning state for this monitor indicates one or more monitored interfaces is experiencing a high input or output discard rate.

Resolutions

Use the Health Explorer to determine which subordinate monitor is causing the failure. See the knowledge article for the failed monitor for more information on the specific failure.

Element properties:

TargetSystem.NetworkManagement.NetworkAdapter
Parent MonitorSystem.Health.PerformanceState
AlgorithmWorstOf
CategoryPerformanceHealth
EnabledFalse
Alert GenerateTrue
Alert SeverityMatchMonitorHealth
Alert PriorityNormal
Alert Auto ResolveTrue
RemotableTrue
AccessibilityPublic
Alert Message
Interface High Discard Rate
Interface {0} has exceeded its discard rate. Use health explorer to further troubleshoot this issue.

Source Code:

<AggregateMonitor ID="System.NetworkManagement.NetworkAdapter.HighDiscardRate" Accessibility="Public" Enabled="false" Target="NetworkLibrary!System.NetworkManagement.NetworkAdapter" ParentMonitorID="SystemHealth!System.Health.PerformanceState" Remotable="true" Priority="Normal">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="System.NetworkManagement.Generic.NetworkAdapter.HighDiscardRate.AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="System!System.Entity"]/DisplayName$</AlertParameter1>

    </AlertParameters>

  </AlertSettings>

  <Algorithm>WorstOf</Algorithm>

</AggregateMonitor>