3Com 6000 manual The system displays this message

What’s New at Revision 8.2.0? 13

Top-Level Menu
system
➧ethernet	summary
fddi
	detail	s
tokenring	➧fastEthernet	➧duplexMode
		ifm
bridge	label
ip
	portState
snmp
analyzer
script
logout

Full-duplex mode eliminates both the link’s collision domain and the need for collision detection. As a result, full-duplex point-to-point links can be much longer than half-duplex links.

To configure a port for full-duplex operation:

The top-level menus in this chapter change based on you level of access and on the modules installed in your CoreBuilder system.

1From the top level of the Administration Console, enter:

ethernet fastEthernet duplexMode

You receive a prompt similar to the following:

Select slot(s) (10-12all):

This prompt indicates that the CoreBuilder 6000 system contains configurable Fast Ethernet ports in slots 10, 11, and 12.

2Enter the number(s) of the slot(s) that contain ports you want to set to full-duplex mode:

10-12

For each slot you entered, the system prompts you for specific port numbers:

Select Ethernet port(s) (1-8,all):

3Enter the number(s) of the port(s) that you want to configure:

1,2,5-7

The system displays this message:

Warning: Changing mode to full duplex disables collision detection. The device connected to this port must be configured for the same duplex mode.

Do you want to change the duplex mode (n,y) [y]:

The CoreBuilder 6000 system does not support automatic negotiation of duplex mode between devices. You must configure any device attached to this port for the same duplex mode.

4Enter y for yes, n for no.

You receive the prompt to select each port’s duplex mode:

Enter new value (full, half) [half]: