Tim McMichael

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Errors with Test-ReplicationHealth when using a multi-subnet Windows 2008 Cluster.

Errors with Test-ReplicationHealth when using a multi-subnet Windows 2008 Cluster.

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Windows 2008 supports having clustered nodes that are installed into different network subnets.  For Exchange 2007 SP1 this becomes a configuration used for cluster continuous replication clusters.

In troubleshooting and monitoring clusters customers will often use the test-replicationhealth commandlet to determine the status of replication between two clustered nodes in a continuous cluster replication solution.  When the cluster itself is multi-subnet, the following error is thrown during testing:

Server Check Result Error
------ ----- ------ -----
2008-NODE6 ClusterNetwork WARNING Warnings:
Network 'Cluster Netw
ork 3' used for client co
nnectivity is up but node
'2008-Node5' does not ha
ve a Network Interface Ca
rd configured on it. Chec
k that a NIC is configure
d for this network and is
enabled.
Network 'Cluster Netw
ork 1' used for client co
nnectivity is up but node
'2008-Node6' does not ha
ve a Network Interface Ca
rd configured on it. Chec
k that a NIC is configure
d for this network and is
enabled.
2008-NODE6 QuorumGroup Passed
2008-NODE6 FileShareQuorum Passed
2008-NODE6 CmsGroup Passed
2008-NODE6 NodePaused Passed
2008-NODE6 DnsRegistrationStatus Passed
2008-NODE6 ReplayService Passed
2008-NODE6 DBMountedFailover Passed
2008-NODE6 SGCopySuspended Passed
2008-NODE6 SGCopyFailed Passed
2008-NODE6 SGInitializing Passed
2008-NODE6 SGCopyQueueLength Passed
2008-NODE6 SGReplayQueueLength Passed

 

The issue is a bug in the way that test-replicationhealth handles cluster networks.  In cluster administrator, under networks, you will see a “network” enumerated for each subnet.  Each of these networks shows all of the cluster interfaces that reside on that network.  In a single subnet cluster, these networks would generally have two interfaces, one for each node.  In a multi-subnet cluster, each network only has a single interface, one for each node.

To view a network and it’s interfaces, select networks from the left hand pane:

 

image

 

Here is an example of a multi-subnet cluster (showing a single interface per network):

 

image

 

Here is an example of a single subnet cluster (showing multiple interfaces per network):

 

image

 

At this time this issue is not scheduled to be corrected in any Exchange 2007 release.

 

*Updates:

10/19/2009 – Updated to reflect fix release.

Comments
  • When to use Move Mailbox Wizard or ExMerge to move Exchange mailboxes Exchange 2007 SP1 Features with

  • Thanks so much for posting this as I'd of been barking up the wrong tree trying to fix a seperate failover issue!

  • Hi,

    now are there some fix scheduled to be corrected this?

    Thanks.

  • So, in this case can I delete the unused Excahnge Server 2003-2007 replication link connector from the clsuter manager assuming the Exchange Server 2003 has been turned off due to hardware issue.

  • @AlbertWT:

    There's no such thing as an Exchange 2003 - Exchange 2007 replication connector...so I'm not sure what you are referring too.

    TIMMCMIC

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