Regardless of the settings of the physical NIC used in Windows, set and lock the DE500 mode to 'Fast', and the DE435 to 'Twisted Pair'.  Do NOT use Auto at any time.

>>> set ewa0_mode Fast
>>> set ewb0_mode Twisted Pair
>>> init

Use the exit command to save console parameters in the .nvr file.

Failing to select and lock the NIC speed from the console may result in unpredictable behavior by the Tru64 Tulip NIC driver.  Symptoms include not recognizing the card, poor performance, and only uni-directional traffic.