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NLB driver could not allocate enough memory resources to perform driver operations

Microsoft.Windows.NetworkLoadBalancing.10.0.The.NLB.driver.could.not.allocate.enough.memory.resources.to.perform.driver.operations (Rule)

Knowledge Base article:

Summary

The Network Load Balancing (NLB) driver on the host tracks connections to maintain client/network affinity configured on the NLB cluster. If the driver is not functioning properly, NLB may not be able to track TCP connections or may experience load distribution errors.

Resolutions

Manage memory resources on the NLB host

If the Network Load Balancing (NLB) driver cannot allocate enough memory resources to operate the driver, you should close all programs on this cluster host that might be consuming memory, and then rebind NLB to the adapters. If this problem persists, you might need to add additional memory (RAM) to this host.

To manage memory resources on the NLB host:

Element properties:

TargetMicrosoft.Windows.NetworkLoadBalancing.10.0.ServerRole
CategoryAlert
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.NetworkLoadBalancing.EventProvider Default
WA WriteAction Microsoft.Windows.NetworkLoadBalancing.10.0.GenerateAlert.SuppressByDescription Default
WriteToDB WriteAction Microsoft.Windows.NetworkLoadBalancing.10.0.CollectEvent Default

Source Code:

<Rule ID="Microsoft.Windows.NetworkLoadBalancing.10.0.The.NLB.driver.could.not.allocate.enough.memory.resources.to.perform.driver.operations" Enabled="true" Target="Microsoft.Windows.NetworkLoadBalancing.10.0.ServerRole" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>Alert</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="NLBLibrary!Microsoft.Windows.NetworkLoadBalancing.EventProvider">

      <Criteria>

        <SimpleExpression>

          <ValueExpression>

            <XPathQuery>EventDisplayNumber</XPathQuery>

          </ValueExpression>

          <Operator>Equal</Operator>

          <ValueExpression>

            <Value>10</Value>

          </ValueExpression>

        </SimpleExpression>

      </Criteria>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="Microsoft.Windows.NetworkLoadBalancing.10.0.GenerateAlert.SuppressByDescription">

      <Priority>1</Priority>

      <Severity>2</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.Windows.NetworkLoadBalancing.10.0.The.NLB.driver.could.not.allocate.enough.memory.resources.to.perform.driver.operations.AlertMessage"]$</AlertMessageId>

      <EnableAlert>true</EnableAlert>

    </WriteAction>

    <WriteAction ID="WriteToDB" TypeID="Microsoft.Windows.NetworkLoadBalancing.10.0.CollectEvent">

      <CollectEvent>false</CollectEvent>

    </WriteAction>

  </WriteActions>

</Rule>