Cisco Catalyst 3030 Command Reference Manual page 556

udld
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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 Command
show udld
udld port
udld reset
Cisco Catalyst Blade Switch 3030 Command Reference
2-528
The no udld port interface configuration command followed by the udld port or udld port
aggressive interface configuration command to re-enable 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
Chapter 2 Cisco Catalyst Blade Switch 3030 Cisco IOS Commands
Description
Displays UDLD administrative and operational status for all ports
or the specified port.
Enables UDLD on an individual interface or prevents a fiber-optic
interface from being enabled by the udld global configuration
command.
Resets all interfaces shut down by UDLD and permits traffic to
again pass through.
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