Trouble with multihomed system

Hello everyone,

I have a multihomed NT 4.0 server set up with two D-Link 530 TX NICs installed. The problem is that they will not function simultaneously, but will work fine individually. My first instinct is that there is an IRQ conflict; but upon examination, there doesn't seem to be a conflict at all in that both NICs are operating with two separate IRQs. Does anyone have any ideas as to what else this may be, or have had a similar problem?

Thanks for your time.

Could be a driver thing... I haven't run into the problem myself but I run 3C905x NICs for the most part. Have you checked their knowledge base?