•
The shutdown and no shutdown interface configuration commands.
•
The no udld enable global configuration command followed by the udld {aggressive | enable} global
configuration command to reenable UDLD globally.
•
The no udld port interface configuration command followed by the udld port or udld port aggressive
interface configuration command to reenable UDLD on the specified interface.
•
The errdisable recovery cause udld and errdisable recovery interval interval global configuration
commands to automatically recover from the UDLD error-disabled state.
Examples
This example shows how to enable UDLD on all fiber-optic interfaces:
Switch(config)# udld enable
You can verify your setting by entering the show udld privileged EXEC command.
Related Commands
DescriptionCommand
Displays UDLD administrative and operational status for all ports or the specified
port.
show udld
Enables UDLD on an individual interface or prevents a fiber-optic interface from
being enabled by the udld global configuration command.
udld port
Resets all interfaces shut down by UDLD and permits traffic to pass through
again.
udld reset
Catalyst 2960-X Switch Layer 2 Command Reference, Cisco IOS Release 15.0(2)EX
122 OL-29043 -01
Layer 2 Commands
udld
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