Interface Commands
4-169
4
speed-duplex
This command configures 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
• The 1000BASE-T standard does not support forced mode. Auto-negotiation
should always be used to establish a connection over any 1000BASE-T port
or trunk. If not used, the success of the link process cannot be guaranteed
when connecting to other types of switches.
• 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 (4-170)
capabilities (4-170)
Console(config)#interface ethernet 1/5
Console(config-if)#speed-duplex 100half
Console(config-if)#no negotiation
Console(config-if)#
Summary of Contents for DG-GS1550
Page 24: ...Tables xxx ...
Page 46: ...Initial Configuration 2 10 2 ...
Page 642: ...Command Line Interface 4 342 4 ...
Page 664: ...Index 8 Index ...
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