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NLB node depends on network adapter

Microsoft.Windows.NetworkLoadBalancing.ServerRoleDependsOnNetworkAdapter (DependencyMonitor)

Knowledge Base article:

Summary

This is a dependency rollup monitor to roll up the health state of the network interface used by the NLB node. The purpose of this monitor is to ensure that problems with the network adapter affect the health state of the NLB node as the network interface is one of the core dependencies of NLB. The health of the network interface is actually determined by the Windows Base OS management pack.

Resolutions

Use health explorer to determine the root cause of the problem.

Element properties:

TargetMicrosoft.Windows.NetworkLoadBalancing.ServerRole
Parent MonitorSystem.Health.AvailabilityState
AlgorithmWorstOf
Source MonitorSystem.Health.AvailabilityState
RelationshipMicrosoft.Windows.NetworkLoadBalancing.ServerRoleContainsNetworkAdapter
CategoryCustom
EnabledTrue
Alert GenerateTrue
Alert SeverityMatchMonitorHealth
Alert PriorityNormal
Alert Auto ResolveTrue
RemotableTrue
AccessibilityPublic
Alert Message
Network adapter used by NLB is unhealthy
The network adapter used by NLB node {0} on {1} is unhealthy. The NLB node is part of a cluster with IP {2}.

Source Code:

<DependencyMonitor ID="Microsoft.Windows.NetworkLoadBalancing.ServerRoleDependsOnNetworkAdapter" Accessibility="Public" Enabled="true" Target="Microsoft.Windows.NetworkLoadBalancing.ServerRole" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" RelationshipType="Microsoft.Windows.NetworkLoadBalancing.ServerRoleContainsNetworkAdapter" MemberMonitor="Health!System.Health.AvailabilityState">

  <Category>Custom</Category>

  <AlertSettings AlertMessage="Microsoft.Windows.NetworkLoadBalancing.ServerRoleDependsOnNetworkAdapter_AlertMessageResourceID">

    <AlertOnState>Error</AlertOnState>

    <AutoResolve>true</AutoResolve>

    <AlertPriority>Normal</AlertPriority>

    <AlertSeverity>MatchMonitorHealth</AlertSeverity>

    <AlertParameters>

      <AlertParameter1>$Target/Property[Type="Microsoft.Windows.NetworkLoadBalancing.ServerRole"]/DedicatedIPAddress$</AlertParameter1>

      <AlertParameter2>$Target/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/PrincipalName$</AlertParameter2>

      <AlertParameter3>$Target/Property[Type="Microsoft.Windows.NetworkLoadBalancing.ServerRole"]/ClusterIP$</AlertParameter3>

    </AlertParameters>

  </AlertSettings>

  <Algorithm>WorstOf</Algorithm>

  <MemberUnAvailable>Error</MemberUnAvailable>

</DependencyMonitor>