Setting Auto-Negotiation and Advertised Ability
Setting Auto-Negotiation and Advertised Ability
Purpose
To review, disable or enable auto‐negotiation, and to review or set a port's advertised mode of
operation.
During auto‐negotiation and advertised ability, the port "tells" the device at the other end of the
segment what its capabilities and mode of operation are. If auto‐negotiation is disabled, the port
reverts to the values specified by default speed, default duplex, and the port flow control
commands.
In normal operation, with all capabilities enabled, advertised ability enables a port to "advertise"
that it has the ability to operate in any mode. The user may choose to configure a port so that only
a portion of its capabilities are advertised and the others are disabled.
Commands
For information about...
show port negotiation
set port negotiation
show port mdix
set port mdix
clear port mdix
show port advertise
set port advertise
clear port advertise
show port negotiation
Use this command to display the status of auto‐negotiation for one or more ports.
Syntax
show port negotiation [port-string]
Parameters
port‐string
Defaults
If port‐string is not specified, auto‐negotiation status for all ports will be displayed.
4-30 Port Configuration
Note: Advertised ability can be activated only on ports that have auto-negotiation enabled.
(Optional) Displays auto‐negotiation status for specific port(s). For a
detailed description of possible port‐string values, refer to "Port String
Syntax Used in the CLI" on page 4‐2.
show port negotiation
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