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Maximum NICs for MS Cluster?

Posted on 2004-05-02
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Last Modified: 2013-11-15
I have a Microsoft Cluster with around 21 VLANs trunking to the server thus, making 21 Local Area Connections on the server.  I think we might have hit a maximum number of NICs with MS Clustering because it locks up one node and blue screens the other node.  The node with the blue screen gets a 0x000000D1 blue screen.  It works fine if we disable a couple of the NICs on each node.  But once we turn on all of the other ones it does it.  And it doesn't matter which NICs we disable and turn on.  Any combination does it.  Does anyone know if there is a maximum number of NICs you can have with MS Clustering under Windows 2000 Advanced Server?  If there is can someone point me to offical documentation on this.  I cannot find anything stating a maximum number of NICs.

Thanks,
Chris
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Question by:spheretechinc
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Expert Comment

by:rhandels
ID: 10970752
Hi,

I'm a 2000 certified MCSE and i never saw or read anything about a maximum number of NIC's in teh advanced server feature. The only thing i know is that on every NIC, you can set up to 16 ip addresses.

You can try and ask Micorsoft if they can help you with this one. I never heard of something like this. Isn't there any other way you can solve this problem?? Maybe we can help you with that??
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Author Comment

by:spheretechinc
ID: 10971600
I too am an MCSE for about 9 years.  So, I have been around the block a few times.  I know that Windows doesn't have a thoerical NIC limit but it is looking like the Cluster service does (MSCS).  Once I turn on the 17th NIC (VLAN) on one of the servers it kills the cluster (actually locks the other server up).

I wish there was another way to do this but this cluster houses around 5000-7500 users that are on 21 different VLANs.  If you have all of these networks going to one IP it is super slow (because it has to go through the RSM on the switch and thus slows it down).  Where if the server is on the same VLAN as the client it is much faster.  We have 2 GIG NICs that each has several trunked VLANs on them.

Has anyone out there done the VLAN trunking on the servers with MS Clustering?  How many do you have?  Have you found a limit with MS Clustering?
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Accepted Solution

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rhandels earned 1000 total points
ID: 10974968
I have to throw in the towel.... Dono...

But it's kinda funny that you can only give a NIC up to 16 ip addresses and if you enable the 17th is goes broke.... Maybe you can try to give 1 NIC 2 ip addresses and see if, after enabling the 16th, it goes down....

But other that that... No idea...
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