negotiate:

# Divide the nodes up into used and unused based on the status of
# their WhOL experimental interface:
#
# enabled=yes     port in use
# enabled=no      not used
#
# If a port is "in use" we assume it has talked to the switch and
# no speed/duplex changes are needed.
#
# If the port is unused, we assume that the port will try to auto
# negotiate with the switch when enabled.  In this case we set
# auto-negotiation on the switch to maximize the chance that we will
# sucessfully communicate with the card.