
11 Configuring the NIC
44
Media Type Determines the type of media your network is using.
• Auto Select allows the NIC to automatically select the
Media Type for you.
• If you set the NIC Duplex setting to Auto Select, the
Media Type is automatically set to Auto Select.
• If you set the NIC Duplex setting manually, you must
set the Media Type setting manually.
Note: If you are running Windows 2003, Windows XP,
or Windows 2000, changes made to the Media Type
setting though the 3Com NIC Diagnostics are not
reflected in the registry unless you also change the
Media Select property setting in Windows:
1 In the Device Manager window, double-click Network
adapters.
2 Right-click the 3CR990B 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.
• AUTO SELECT
• 100BASE-TX
(100 Mbps)
• 10BASE-T
(10 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
Alert Type Enabled alert types are reported to the Windows System
Events monitor. The default setting is ALL. Alert types:
• Information
• Warning
• Error
• Off
• Information
• Warning
• Error
• All
Flow Control When enabled, the NIC throttles the incoming data
packet stream to prevent the input buffers from
overflowing and losing packets.
• Disabled
• Enabled
Option Description Settings
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