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PowerConnect B-Series FCX Configuration Guide 33
53-1002266-01
Configuring basic port parameters
2
Modifying port speed and duplex mode
The Gigabit Ethernet copper ports are designed to auto-sense and auto-negotiate the speed and
duplex mode of the connected device. If the attached device does not support this operation, you
can manually enter the port speed to operate at either 10, 100, or 1000 Mbps. The default and
recommended setting is 10/100/1000 auto-sense.
NOTE
You can modify the port speed of copper ports only; this feature does not apply to fiber ports.
NOTE
For optimal link operation, copper ports on devices that do not support 803.3u must be configured
with like parameters, such as speed (10,100,1000), duplex (half, full), MDI/MDIX, and Flow Control.
Configuration syntax
The following commands change the port speed of copper interface 8 on a PowerConnect from the
default of 10/100/1000 auto-sense, to 100 Mbps operating in full-duplex mode.
PowerConnect(config)# interface ethernet 8
PowerConnect(config-if-e1000-8)# speed-duplex 100-full
Syntax: speed-duplex <value>
where <value> can be one of the following:
• 10-full – 10 Mbps, full duplex
• 10-half – 10 Mbps, half duplex
• 100-full – 100 Mbps, full duplex
• 100-half – 100 Mbps, half duplex
• 1000-full-master – 1 Gbps, full duplex master
• 1000-full-slave – 1 Gbps, full duplex slave
• auto – auto-negotiation
The default is auto (auto-negotiation).
Use the no form of the command to restore the default.
NOTE
On PowerConnect devices, when setting the speed and duplex-mode of an interface to 1000-full,
configure one side of the link as master (1000-full-master) and the other side as slave
(1000-full-slave).
Enabling auto-negotiation maximum port speed
advertisement and down-shift
NOTE
For optimal link operation, link ports on devices that do not support 803.3u must be configured with
like parameters, such as speed (10,100,1000), duplex (half, full), MDI/MDIX, and Flow Control.