2 nics 1 windows 2003 server. I am trying to assign network traffic to pass over 1 onboard Ethernet adapter. All traffic should pass over this nic. I have configured the nic with a static IP address, mask and gateway. This works fine until I add the 2nd Ethernet adapter (static ip & mask assigned, no gateway, since I can only have one gateway assigned). The only traffic I want to pass over the 2nd Ethernet adapter is vlan traffic. Keep in mind; I have Ethernet 1 that is connected to my LAN via direct connection to a layer 3 switch. Ethernet 2 is connected to another isolated switch directly plugged into the switch from the server (layer 2 switch VLAN trunking not enabled, and routing not available in the layer 2 switch) away from LAN traffic. I only need to do this so that Ethernet 2 can manage a hardware component that is on the isolated switch. I have attempted to make routing table adjustment, but the isolated switch is just that isolated it does not have a gateway assigned, so my route settings never work successfully, or I am missing something. The only way I have gotten this to work is disable nic1, and I can manage what I need through nic2. Any help would be greatly appreciated.

put nic2 in a different subnet than nic1. vlan doesn't matter