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Interface Utilization (if-mib)

System.NetworkManagement.ifMIB.NetworkAdapter.HighUtilization (UnitMonitor)

Monitors the level of utilization on this interface

Knowledge Base article:

Summary

The monitor indicates the level of utilization on this interface. 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

Threshold

Utilization percentage

60

Causes

This monitor enters a warning state when the utilization level for this interface exceeds the configured threshold. The current utilization of a port or interface is the ratio, expressed as a percentage, of the total number of bits sent over some interval over the total number of bits that could have been sent in that same interval. A value of 100% means that, had more traffic arrived in that period, some would have been dropped due to lack of capacity.

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 calculated performance counter value that caused the health state change. Consult the device manufacturer's documentation for more information on the problem and troubleshooting procedures.

Element properties:

TargetSystem.NetworkManagement.ifMIB_Base_NetworkAdapter
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledFalse
Alert GenerateTrue
Alert SeverityMatchMonitorHealth
Alert PriorityNormal
Alert Auto ResolveTrue
Monitor TypeSystem.NetworkManagement.NetworkAdapter.HighUtilizationThresholdMonitor
RemotableTrue
AccessibilityPublic
Alert Message
Interface Utilization Alert
The utilization rate for {0} is over the specified threshold. The triggering value was {1}.
RunAsDefault

Source Code:

<UnitMonitor ID="System.NetworkManagement.ifMIB.NetworkAdapter.HighUtilization" Accessibility="Public" Enabled="false" Target="NetworkLibrary!System.NetworkManagement.ifMIB_Base_NetworkAdapter" ParentMonitorID="SystemHealth!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="System.NetworkManagement.NetworkAdapter.HighUtilizationThresholdMonitor" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

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

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

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

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

    </AlertParameters>

  </AlertSettings>

  <OperationalStates>

    <OperationalState ID="UnderThreshold" MonitorTypeStateID="MTSThresholdSuccess" HealthState="Success"/>

    <OperationalState ID="OverThreshold" MonitorTypeStateID="MTSThresholdError" HealthState="Warning"/>

  </OperationalStates>

  <Configuration>

    <Interval>300</Interval>

    <NoOfRetries>3</NoOfRetries>

    <Timeout>3500</Timeout>

    <OIDMaxSpeed>.1.3.6.1.2.1.31.1.1.1.15.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.NetworkAdapter"]/Index$</OIDMaxSpeed>

    <OIDInOctets>.1.3.6.1.2.1.31.1.1.1.6.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.NetworkAdapter"]/Index$</OIDInOctets>

    <OIDOutOctets>.1.3.6.1.2.1.31.1.1.1.10.$Target/Property[Type="NetworkLibrary!System.NetworkManagement.NetworkAdapter"]/Index$</OIDOutOctets>

    <MaxSpeedFactor>1000000</MaxSpeedFactor>

    <Threshold>60</Threshold>

    <NumberOfSamples>3</NumberOfSamples>

  </Configuration>

</UnitMonitor>