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Cisco Router: Ethernet MAC receive errors Health Monitor

Jalasoft.Xian.SmartManagementPacks.CiscoRouters.EthernetMACReceiveErrors.1.1 (AggregateMonitor)

This monitor catches Xian events that notifies when the Ethernet MAC receive errors if has changed its state.

Knowledge Base article:

Summary

Number of ethernet MAC receive errors is over threshold.

The number of frames for which reception failed due to a MAC sublayer receive error is above the maximum threshold configured in Xian Network Manager 2012.

Causes

The precise meaning of the frames detected by this rule is implementation-specific. In particular, a frame detected by this rule could represent receive errors on a particular interface that are not otherwise detected.

Usually caused by either faulty cabling, or as the result of a collision. If the cabling connecting an Ethernet Adapter or hub is faulty the electric connection may be on and off many times during reception interrupting parts of the process, and “damaging” the signal.

Resolutions

Look for overloaded segments, improper cabling, faulty cables, faulty connectors, faulty network equipment, and cables that are too close to equipment that emits electromagnetic interference.

Additional

Monitors the number of frames for which reception on a particular interface fails due to an internal MAC sublayer receive error. A frame is only detected by this rule if it is not detected by the "Ethernet Frame Too Long", "Ethernet Alignment Errors" or the "Ethernet FCS Errors" rules.

Element properties:

TargetJalasoft.Xian.Common.Elements.ThirdParty.Cisco.JsXCiscoRouterSnmpInterfaceElement
Parent MonitorSystem.Health.PerformanceState
AlgorithmWorstOf
CategoryStateCollection
EnabledTrue
Alert GenerateTrue
Alert SeverityMatchMonitorHealth
Alert PriorityLow
Alert Auto ResolveTrue
RemotableTrue
AccessibilityPublic
Alert Message
Ethernet MAC receive errors Alert
{0}

Source Code:

<AggregateMonitor ID="Jalasoft.Xian.SmartManagementPacks.CiscoRouters.EthernetMACReceiveErrors.1.1" Accessibility="Public" Enabled="true" Target="ThirdParty_Cisco!Jalasoft.Xian.Common.Elements.ThirdParty.Cisco.JsXCiscoRouterSnmpInterfaceElement" ParentMonitorID="SystemHealth!System.Health.PerformanceState" Remotable="true" Priority="Normal">

  <Category>StateCollection</Category>

  <AlertSettings AlertMessage="EthernetMACReceiveErrors_AlertMessage">

    <AlertOnState>Warning</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Low</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Data/Context/Params/Param[3]$</AlertParameter1>

    </AlertParameters>

  </AlertSettings>

  <Algorithm>WorstOf</Algorithm>

</AggregateMonitor>