3Com 3CR990-FX-97 Configuring the NIC, Default NIC Settings, Option Description Settings, Mbps

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Configuring the NIC

This chapter describes how to configure the 3CR990-FX-97 NIC.

NOTE: Before you change the NIC configuration settings, consult your system administrator.

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.

Option	Description		Settings
NetBoot ROM	Provides the ability to boot a PC over the network. Enables or disables the Netboot ROM (if a boot		■	DISABLED
	ROM is installed on the NIC).		■	Enabled
Duplex	Determines if the NIC transmits data across the network in both directions simultaneously (full-		■	FULL-
	duplex) or in one direction at a time (half-duplex).			DUPLEX
	■	Full-Duplexsets the NIC to operate in full-duplex mode. To use this setting, the switch that	■	Half-Duplex
		you are connected to must support full-duplex. You must also manually set the NIC Media
		Type setting.
	■	Half-Duplexsets 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.
Media Type	Determines the type of media your network is using. The Media Type is forced to a value of:		■	100BASE-FX
	100BASE-FX (100 Mbps)			(100 Mbps)
Self Healing	In BASIC mode, monitors firmware heartbeat and interrupt stalls, and tries to automatically reset		■	BASIC
	the NIC.		■	Disabled
	Also monitors link status and reports changes.
			■	Enhanced
	In ENHANCED mode, checks for transmit/receive errors and tries to recover.
Error	Specifies threshold levels for transmit/receive errors. An RSL failover or NIC reset occurs when the		■	HIGH
Tolerance	threshold is exceeded during the sampling period.		■	Medium
		High = 100 of each error category (default setting)
	■		■	Low
		Medium = 50 of each error category
	■
	■	Low = 5 of each error category

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