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Installation 33
o
Full-duplex. The adapter sends and receives packets at the same time. This improves the
performance of your adapter. Set duplex mode to full-duplex ONLY if you have a hub/switch
that supports full-duplex.
o Half-duplex. The adapter performs one operation at a time. It either transmits or receives.
NOTE: The HP NC31xx, 340T, and NC71xx Server Adapters support full-duplex and half-
duplex. The HP NC61xx fiber Gigabit Server Adapters support full-duplex mode only and
cannot be changed.
NOTE: The NC3133 default to full-duplex.
NOTE: To set the adapter to half- or full-duplex, you must set the SPEED parameter to either 10
or 100.
o Syntax: FORCEDUPLEX=n
Where n =
0—auto-negotiate
1—half-duplex
2—full-duplex
o Default = auto-negotiate
o Examples:
100 Mbps full-duplex FORCEDUPLEX=2 SPEED=100
10 Mbps full-duplex FORCEDUPLEX=2 SPEED=10
• SLOT. (Required) For PCI adapters, SLOT is derived from bus number and device location as defined
by the PCI specification. One way to determine the slot number is to load the driver from the
command line. You will be prompted with valid device number(s) for the adapter(s). Select one of
them.
o Syntax: SLOT=n
Where n = 1, 2, 3, 4,...
• SPEED. This keyword specifies the speed the driver uses. If you do not use this parameter, the driver
automatically detects the network speed. If unable to detect, the driver defaults to 10 Mbps. If you
use this parameter, the driver operates at the specified speed instead of auto detecting network
speed.
NOTE: The NC3133 adapter supports 100 Mbps only. It does not default to 10 Mbps. You
must set the SPEED parameter to either 10 or 100 if you want to set the FORCEDUPLEX
parameter to either half or full. The SPEED parameter is for N100.LAN, N1000.LAN, and
N1000e.LAN drivers. You cannot change the speed for the Gigabit (fiber) adapters. You can,
however, change the speed for the NC7170, NC7131, and NC7132 Gigabit (copper)
adapters to 10 Mbps or 100 Mbps.
o Syntax: SPEED=n
Where n = 10 or 100 or 1000
o Default = The adapter automatically detects network speed.