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Chapter 4 Command-Line Reference 4-85
Command Mode
Interface Configuration (Ethernet, Port Channel)
Example
The following example configures a description for down-link port SNP5.
4.3.8.3 speed-duplex
Use this command to configure 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 Mbit/sec full-duplex operation
■ 100full – Forces 100 Mbit/sec full-duplex operation
■ 100half – Forces 100 Mbit/sec half-duplex operation
■ 10full – Forces 10 Mbit/sec full-duplex operation
■ 10half – Forces 10 Mbit/sec half-duplex operation
Default Setting
■ Auto-negotiation is enabled by default.
■ When auto-negotiation is disabled, the default speed-duplex
setting is
100full. for Fast Ethernet ports and 1000full for Gigabit Ethernet ports.
Note – When auto-negotiation is disabled, you can only set the up-link ports to
10 Mbit/sec or 100 Mbit/sec. To force a port to operate at 1 Gbit/sec full duplex,
enable auto-negotiation, and set the port capabilities to 1000full only.
Console(config)#interface ethernet SNP5
Console(config-if)#description RD-SW#3
Console(config-if)#