Command Line Interface
7391553-KDU 137 365 Uen D 2006-06-16
7.9.3 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.
• Auto-negotiation cannot be disabled for Gigabit Ethernet ports, which
only operate at 1000full (1 Gbps full-duplex).
• When auto-negotiation is disabled for Fast Ethernet ports, the default
speed-duplex setting is: 100full (100 Mbps full-duplex).
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
• The 1000BASE-T standard does not support forced mode.
Auto-negotiation must always be used to establish a connection over
any 1000BASE-T port or trunk.
• To force operation to the speed and duplex mode specified in a speed-
duplex command for Fast Ethernet ports, use the no negotiation
command to disable auto-negotiation on the selected interface.
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