User guide

Brocade 6910 Ethernet Access Switch Configuration Guide 269
53-1002581-01
Interface Commands
12
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 {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 100full on the
1000BASE-T 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)#
Related Commands
negotiation (267)
capabilities (264)