I
NTERFACE
C
OMMANDS
3-87
• 1000full - Forces 1000 Mbps full-duplex operation
• 100full - Forces 100 Mbps full-duplex operation
• 100half - Forces 100 Mbps half-duplex operation
• 10full - Forces 10 Mbps full-duplex operation
• 10half - Forces 10 Mbps half-duplex operation
Default Setting
• Auto-negotiation is enabled by default.
• When auto-negotiation is disabled, the default speed-duplex setting is
1000full for Gigabit Ethernet ports.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
To force operation to the speed and duplex mode specified in a
speed-duplex command, use the no negotiation command to disable
auto-negotiation on the selected interface.
When using the negotiation command to enable auto-negotiation, the
optimal settings will be determined by the capabilities command. To set
the speed/duplex mode under auto-negotiation, the required mode
must be specified in the capabilities list for an interface.
Example
The following example configures port 5 to 100 Mbps, half-duplex
operation.
Related Commands
negotiation (3-88)
capabilities (3-89)
Console(config)#interface ethernet 1/5
Console(config-if)#speed-duplex 100half
Console(config-if)#no negotiation
Console(config-if)#
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