Command Line Interface

4-158

4
Command Usage
When auto-negotiation is enabled the switch will negotiate the best settings
for a link based on the capabilities command. When auto-negotiation is
disabled, you must manually specify the link attributes with the speed-duplex
and flowcontrol commands.
If autonegotiation is disabled, auto-MDI/MDI-X pin signal configuration will
also be disabled for the RJ-45 ports.
Example
The following example configures port 11 to use autonegotiation.
Related Commands
capabilities (4-158)
speed-duplex (4-156)

capabilities

This command advertises the port capabilities of a given interface during
autonegotiation. Use the no form with parameters to remove an advertised
capability, or the no form without parameters to restore the default values.
Syntax
[no] capabilities {1000full | 100full | 100half | 10full | 10half | flowcontrol |
symmetric}
1000full - Supports 1000 Mbps full-duplex operation
100full - Supports 100 Mbps full-duplex operation
100half - Supports 100 Mbps half-duplex operation
10full - Supports 10 Mbps full-duplex operation
10half - Supports 10 Mbps half-duplex operation
flowcontrol - Supports flow control
symmetric (Gigabit only) - When specified, the port transmits and receives
pause frames; when not specified, the port will auto-negotiate to determine
the sender and receiver for asymmetric pause frames. (The current switch
ASIC only supports symmetric pause frames.)
Default Setting
100BASE-TX: 10half, 10full, 100half, 100full
1000BASE-T: 10half, 10full, 100half, 100full, 1000full
SFP: 1000full
Command Mode
Interface Configuration (Ethernet, Port Channel)
Console(config)#interface ethernet 1/11
Console(config-if)#negotiation
Console(config-if)#