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A network that is load balanced is behind a network that is not load balanced

Microsoft.ISAServer.2006.A_network_that_is_load_balanced_is_behind_a_network_that_is_not_load_balanced.Rule (Rule)

This Rule generates alerts when A network that is load balanced is behind a network that is not load balanced

Knowledge Base article:

Summary

The Firewall service generates this alert when NLB integration mode is enabled, and NLB is enabled for the External network (which no physical adapter on ISA server), but is not enabled for the network physically connected to the array.

Causes

The NLB configuration may fail when all of the following settings are true:

Resolutions

External

For more information about using NLB in ISA Server, see the related document at the Microsoft TechNet Web site .

Element properties:

TargetMicrosoft.ISAServer.2006.NLB.ServerRole
CategoryEventCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.ISAServer.2006.Rule.AlertGenerate.DS Default
WA WriteAction Microsoft.ISAServer.2006.Rule.AlertGenerate.WA Default

Source Code:

<Rule ID="Microsoft.ISAServer.2006.A_network_that_is_load_balanced_is_behind_a_network_that_is_not_load_balanced.Rule" Enabled="onEssentialMonitoring" Target="Microsoft.ISAServer.2006.NLB.ServerRole" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Microsoft.ISAServer.2006.Rule.AlertGenerate.DS">

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

      <LogName>Application</LogName>

      <EventsPattern>^(21231)$</EventsPattern>

      <EventType>1</EventType>

      <SourcePattern>[Microsoft Firewall]|[Microsoft ISA Server Control]</SourcePattern>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="Microsoft.ISAServer.2006.Rule.AlertGenerate.WA">

      <AlertMessageId>$MPElement[Name="Microsoft.ISAServer.2006.A_network_that_is_load_balanced_is_behind_a_network_that_is_not_load_balanced.AlertMessage"]$</AlertMessageId>

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

      <Priority>1</Priority>

      <Severity>2</Severity>

    </WriteAction>

  </WriteActions>

</Rule>