Edge-Core ECS4120-28F, Reference Manual, Page: 395 / 938

Chapter 11
| Interface Commands
Interface Configuration
– 395 –
speed-duplex
This command configures the speed and duplex mode of a given interface when
auto-negotiation is disabled. Use the
no form to restore the default.
Syntax
speed-duplex { 100full | 100half | 10full | 10half }
no speed-duplex
10000full - Forces 10 Gbps 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 100full
for 1000BASE-T ports, and auto-negotiation on the 10 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.
Console(config)#interface ethernet 1/5
Console(config-if)#speed-duplex 100half
Console(config-if)#no negotiation
Console(config-if)#