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Catalyst 6500 Series Switch Command Reference—Release 8.4
OL-6244-01
Chapter 2 Catalyst 6500 Series Switch and ROM Monitor Commands
set port negotiation
set port negotiation
To enable or disable the link negotiation protocol on the specified port, use the set port negotiation
command.
set port negotiation mod/port {enable | disable}
Syntax Description
Defaults The default is link negotiation protocol is enabled.
Command Types Switch command.
Command Modes Privileged.
Usage Guidelines You cannot configure port negotiation on 1000BASE-T (copper) Gigabit Ethernet ports in this release.
If a 1000BASE-T GBIC is inserted in the port that was previously configured as a negotiation-disabled
port, the negotiation-disabled setting is ignored, and the port operates in negotiation-enabled mode.
The set port negotiation command is supported on Gigabit Ethernet ports only, except on
WS-X6316-GE-TX and on WS-X6516-GE-TX.
If the port does not support this command, this message appears:
Feature not supported on Port N/N.
where N/N is the module and port number.
In most cases, when you enable link negotiation, the system autonegotiates flow control, duplex mode,
and remote fault information. The exception applies to 16-port 10/100/1000BASE-T Ethernet modules;
when you enable link negotiation on these Ethernet modules, the system autonegotiates flow control
only.
You must either enable or disable link negotiation on both ends of the link. Both ends of the link must
be set to the same value or the link cannot connect.
Examples This example shows how to disable link negotiation protocol on port 1, module 4:
Console> (enable) set port negotiation 4/1 disable
Link negotiation protocol disabled on port 4/1.
Console> (enable)
Related Commands show port negotiation
mod/port Number of the module and the port on the module.
enable Enables the link negotiation protocol.
disable Disables the link negotiation protocol.