13
NOTE
: If an adapter is running at 100 Mbps and half duplex, your potential
bandwidth is higher than if you run it at 10 Mbps and full duplex.
Manually Configuring for Full Duplex
If your switch supports auto-negotiation with the N-way standard, duplex con-
figuration is automatic and no action is required on your part. However, many
currently-installed switches do not support auto-negotiation. Check with your
network system administrator to verify whether your switch supports this fea-
ture. Most installations will require manual configuration to change to full
duplex.
Configuration is specific to the driver you’re loading for your network operating
system (NOS).
To set up the duplex mode, refer to the section below that corresponds to your
operating system.
CAUTION
: Adapter performance may suffer or your adapter may not operate if
your switch doesn’t support full duplex and you configure the adapter
to full duplex. The switch settings must always agree with the adapter.
Also, make sure to always set the speed when you configure duplex.
Setting Full Duplex in DOS, ODI*, NDIS 2.01 Clients
For each adapter, edit the NET.CFG or PROTOCOL.INI file. If editing the
NET.CFG file, add the following keywords to the Link Driver section. For the
PROTOCOL.INI file, add these keywords anywhere:
FORCEDUPLEX 2
SPEED 100 (or 10 if 10BASE-T)
Setting Full Duplex in NetWare Servers
For each adapter in AUTOEXEC.NCF, edit the LOAD command and add the
following options (you must include the equal sign for servers):
FORCEDUPLEX=2
SPEED=100 (or 10 if 10BASE-T)
For more information, see the readme file for NetWare computers.
Setting Full Duplex in Windows 95/98
While running Windows 95/98:
1 Double-click the PROSet icon from the Control Panel.
2 Click Settings.
3 In the Network Speed list box, click 10 or 100, according to the speed of
your network.
4 In the Duplex Mode list box, click Full.
5 Click OK.
P100se~2.fm Page 13 Tuesday, January 5, 1999 10:03 AM
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