PPort Link State Dupl Speed Trunk Tag Pvid Pri MAC Name
1/1/23 Up Forward Full 1G None No 1 0 748e.f82d.7a16
connected- to-FCX
Syntax: show interface brief wide ethernet stack-unit/slot/port
For more information about field descriptions of the command output, refer Displaying the port name
for an interface.
Port speed and duplex mode modification
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. This configuration is
referred to as force mode. The default and recommended setting is 10/100/1000 auto-sense. Port
duplex mode and port speed are modified by the same command
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.
Port speed and duplex mode configuration syntax
The following commands change the port speed of copper interface 8 on a FastIron device from the
default of 10/100/1000 auto-sense, to 100 Mbps operating in full-duplex mode.
device(config)# interface ethernet 8
device(config-if-e1000-8)# speed-duplex 100-full
Syntax: speed-duplex value
The value variable can be one of the following values:
• 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 Brocade ICX 7450 and Brocade ICX 7250-24G, the command options 10-half and 100-half are
not supported on 1G fiber ports with mini-GBIC (SFPs) for copper.
Port speed and duplex mode modification
58 FastIron Ethernet Switch Administration Guide
53-1003625-01
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