CLI Reference Guide

Chapter 11 | Interface Commands
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copper-forced - Always uses the built-in RJ-45 port.
sfp-forced - Forces transceiver mode for the SFP/SFP+ port.
sfp-preferred-auto - Uses SFP port if both combination types are
functioning and the SFP port has a valid link.
mode
1000sfp - Always uses 1000BASE SFP mode.
10gsfp - Always uses 10GBASE SFP mode.
Default Setting
SFP/SFP+ ports: None
Combination ports: sfp-preferred-auto
Command Mode
Interface Configuration (Ethernet)
Command Usage
Available sfp-forced modes include: 1000sfp, 10gsfp
Example
This forces the switch to use the 1000sfp mode for SFP port 8.
Console(config)#interface ethernet 1/8
Console(config-if)#media-type sfp-forced 1000sfp
Console(config-if)#
shutdown This command disables an interface. To restart a disabled interface, use the no
form.
Syntax
[no] shutdown
Default Setting
All interfaces are enabled.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
This command allows you to disable a port due to abnormal behavior
(e.g., excessive collisions), and then re-enable it after the problem has been
resolved. You may also want to disable a port for security reasons.