I
NTERFACE
C
OMMANDS
3-87
speed-duplex
Use this command to configure the speed and duplex mode of a given
interface when autonegotiation is disabled. Use the
no
form to restore the
default.
Syntax
speed-duplex
{
1000full
|
100full
|
100half
|
10full
|
10half
}
no speed-duplex
•
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
100half for 100BASE-TX ports and 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.
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