Specifications

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
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Chapter 2 Cisco IOS Commands
udld (global configuration)
Examples This example shows how to enable UDLD on all fiber-optic interfaces:
Switch(config)# udld enable
You can verify your settings by entering the show udld privileged EXEC command.
Related Commands Command Description
show running-config Displays the running configuration on the switch. For syntax
information, select Cisco IOS Configuration Fundamentals
Command Reference for Release 12.1 > Cisco IOS File Management
Commands > Configuration File Commands.
show udld Displays the UDLD status for all ports or the specified port.
udld (interface
configuration)
Enables UDLD on an individual interface or prevents a fiber-optic
interface from being enabled by the udld global configuration
command.
udld reset Resets any interface shut down by UDLD and permits traffic to again
pass through.