Home
  •  

A replication island has been detected Replication will not occur across the enterprise

A_replication_island_has_been_detected_Replication_will_not_occur_across_the_enterprise (Rule)

Knowledge Base article:

Summary

Either this domain controller has no replication partners, or the site this domain controller is in has no connection objects to other sites. Changes will not replicate from this domain controller to all other domain controllers in the forest.

This problem requires immediate attention.

Failure to resolve this problem in a timely manner can lead to lingering object problems and password synchronization problems, among others.

Causes

This is usually caused by an invalid manual configuration of the replication topology. There are some domain controllers that do not have connection objects that will allow them to replicate with all the other domain controllers.

Resolutions

Check the replication topology to ensure that there are connection objects - particularly between sites - that will allow replication to occur.

Element properties:

TargetMicrosoft.Windows.Server.2003.AD.DomainControllerRole
CategoryEventCollection
EnabledTrue
Alert GenerateTrue
Alert SeverityWarning
Alert PriorityNormal
RemotableFalse
Alert Message
A replication island has been detected. Replication will not occur across the enterprise.
{0}
Event LogOperations Manager

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Windows.EventProvider Default
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="A_replication_island_has_been_detected_Replication_will_not_occur_across_the_enterprise" Enabled="onStandardMonitoring" Target="AD2003Core!Microsoft.Windows.Server.2003.AD.DomainControllerRole" ConfirmDelivery="false" Remotable="false" Priority="Normal" DiscardLevel="100">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="EventDS" TypeID="Windows!Microsoft.Windows.EventProvider">

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

      <LogName>Operations Manager</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery>Params/Param[1]</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value>AD Replication Partner Count</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <RegExExpression>

              <ValueExpression>

                <XPathQuery>EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>MatchesMOM2005RegularExpression</Operator>

              <Pattern>^(80)$</Pattern>

            </RegExExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>1</Severity>

      <AlertOwner>$Data/PublisherName$</AlertOwner>

      <AlertMessageId>$MPElement[Name="A_replication_island_has_been_detected_Replication_will_not_occur_across_the_enterprise.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>