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.