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6
Configuring the NIC
This chapter describes how to configure the 3CR990-FX-97 NIC.
Default NIC Settings
The table below lists the configuration settings for the NIC. The default setting is shown in
uppercase text in the Settings column.
NOTE:
Before you change the NIC configuration settings, consult your system
administrator.
Option
Description
Settings
NetBoot ROM
Provides the ability to boot a PC over the network. Enables or disables the Netboot ROM (if a boot
ROM is installed on the NIC).
■
DISABLED
■
Enabled
Duplex
Determines if the NIC transmits data across the network in both directions simultaneously (full-
duplex) or in one direction at a time (half-duplex).
■
Full-Duplex
sets the NIC to operate in full-duplex mode. To use this setting, the switch that
you are connected to must support full-duplex. You must also manually set the NIC
Media
Type
setting.
■
Half-Duplex
sets the NIC to operate in half-duplex mode. You must also set the NIC
Media
Type
setting.
Note
: If you are running Windows 2000, changes made to the Duplex setting though the 3Com
NIC Diagnostics are not reflected in the registry unless you also change the Media Select property
setting in Windows 2000:
1
In the Device Manager window, double-click
Network adapters
.
2
Right-click the 3CR990-FX-97 NIC and select Properties.
3
Select the Advanced tab.
4
Select
Media Select
in the property list, and make the appropriate setting change in the
Value list.
■
FULL-
DUPLEX
■
Half-Duplex
Media Type
Determines the type of media your network is using. The Media Type is forced to a value of:
100BASE-FX (100 Mbps)
■
100BASE-FX
(100 Mbps)
Self Healing
In BASIC mode, monitors firmware heartbeat and interrupt stalls, and tries to automatically reset
the NIC.
Also monitors link status and reports changes.
In ENHANCED mode, checks for transmit/receive errors and tries to recover.
■
BASIC
■
Disabled
■
Enhanced
Error
Tolerance
Specifies threshold levels for transmit/receive errors. An RSL failover or NIC reset occurs when the
threshold is exceeded during the sampling period.
■
High = 100 of each error category (default setting)
■
Medium = 50 of each error category
■
Low = 5 of each error category
■
HIGH
■
Medium
■
Low
