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Line Errored Seconds

Microsoft.SystemCenter.NetworkDevice.Interface.DS1E1.LESThresholdMonitor (UnitMonitor)

Knowledge Base article:

Summary

Line Errored Seconds Threshold Monitor. This monitor is configured to get the LESs count from the interface for the past 15 minute interval.

Causes

Below are the details of the Object Identifier (OID) that is queried via an SNMP GET

Object

OID

Description

dsx1IntervalLESs

.1.3.6.1.2.1.10.18.8.1.9

Line Errored Seconds (LES) is a second in which one or more Line Code Violation errors are detected.

This is defined in RFC 1406

Resolutions

Below are some basic troubleshooting steps

  1. Check the cabling to the device.

  2. Perform any vendor specific hardware tests on the device to determine if the device's hardware is functioning properly

  3. Ensure the line coding cofigured on the port matches the coding of the line.

  4. Call your circuit vendor to have them look at your circuit.

  5. Raise the threshold on the monitor. This will allow for better "tuning" of the application to your environment. Take care no to raise the threshold too much as this could allow important events to go unnoticed.

Element properties:

TargetMicrosoft.SystemCenter.NetworkDevice.Interface.DS1E1
Parent MonitorSystem.Health.PerformanceState
CategoryPerformanceHealth
EnabledFalse
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
Alert Auto ResolveFalse
Monitor TypeMicrosoft.SystemCenter.NetworkDevice.SnmpThresholdMonitorType
RemotableTrue
AccessibilityPublic
Alert Message
Line Errored Seconds Exceed Threshold
The count of line errored seconds (LES) on this interface has exceeded the defined threshold for the last 15 minute interval
RunAsDefault

Source Code:

<UnitMonitor ID="Microsoft.SystemCenter.NetworkDevice.Interface.DS1E1.LESThresholdMonitor" Accessibility="Public" Enabled="false" Target="Microsoft.SystemCenter.NetworkDevice.Interface.DS1E1" ParentMonitorID="Health!System.Health.PerformanceState" Remotable="true" Priority="Normal" TypeID="Microsoft.SystemCenter.NetworkDevice.SnmpThresholdMonitorType" ConfirmDelivery="false">

  <Category>PerformanceHealth</Category>

  <AlertSettings AlertMessage="Microsoft.SystemCenter.NetworkDevice.Interface.DS1E1.LESThresholdMonitor.AlertMessage">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>false</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

  </AlertSettings>

  <OperationalStates>

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

    <OperationalState HealthState="Error" MonitorTypeStateID="OverThreshold" ID="AboveThreshold"/>

  </OperationalStates>

  <Configuration>

    <Interval>180</Interval>

    <IP>$Target/Host/Property[Type="NetworkDevice!Microsoft.SystemCenter.NetworkDevice"]/IPAddress$</IP>

    <CommunityString>$Target/Host/Property[Type="NetworkDevice!Microsoft.SystemCenter.NetworkDevice"]/CommunityString$</CommunityString>

    <Version>$Target/Host/Property[Type="NetworkDevice!Microsoft.SystemCenter.NetworkDevice"]/Version$</Version>

    <SnmpVarBinds>

      <SnmpVarBind>

        <OID>1.3.6.1.2.1.10.18.8.1.9.$Target/Property[Type="Microsoft.SystemCenter.NetworkDevice.Interface"]/ifIndex$.1</OID>

        <Syntax>2</Syntax>

        <Value VariantType="3"/>

      </SnmpVarBind>

    </SnmpVarBinds>

    <Threshold>0</Threshold>

  </Configuration>

</UnitMonitor>