3Com 1100 User Manual
Page 122
122
C
HAPTER
4: W
ORKING
W
ITH
THE
C
OMMAND
L
INE
I
NTERFACE
■
If auto-negotiation is enabled on a 10BASE-T port, the duplex mode
of the link is automatically detected and set accordingly.
CAUTION: The duplex mode of a link is not detected if the port on the
other end of the link is not auto-negotiating. In this case, the Switch port
is set to operate in half duplex:
■
If you want the link to operate in full duplex, set the Switch port to
operate in full duplex manually. For more information, see
.
■
If you want the link to operate in half duplex, set the port on the other
end of the link to half duplex.
You can enable and disable auto-negotiation for Ethernet ports on the
Switch using the
autoNegotiation
command on the Ethernet menu.
To enable or disable auto-negotiation for a port:
1 At the Top-level menu, enter:
ethernet autoNegotiation
The following prompt is displayed:
Select Ethernet port (1-24,all):
2 Enter the number of the port to have auto-negotiation enabled or
disabled, or enter
all
for all ports.
The following prompt is displayed:
Enter new value (enable,disable) [enable]:
3 Enter
enable
or
disable
.
If you are enabling or disabling auto-negotiation for all the ports, only the
ports which can support auto-negotiation are changed.
Fiber ports and Transceiver Module ports are not auto-negotiating. If the
port is one of these ports, auto-negotiation cannot be enabled.
If auto-negotiation is disabled, the speed and duplex mode of the port is
set using the
portMode
command. For more information, see
.