How do I have multiple vlans (tagged) go over one NIC in server 2008 R2? I know it's possible in *nix and I know how to do that on the network side. But it doesn't help if the server 2008 R2 can't understand that.
What type of NIC do you have? I know that Both Intel, and Broadcom provide a configuration utility. All you do is install it, run it and follow the wizards to set up virtual interfaces for each VLAN you want to communicate on.