udld { enable | aggressive }
Global udld
This command enables all fiber interfaces globally to use UDLD. 

Interface Configuration

udld port { aggressive }
Interface udld
This command allows you to configure UDLD on any interface regardless of media type.

show udld { <interface> | neighbors }
Show udld
This command allows you to see if UDLD is configured or enabled on any ports and if so if there is a UDLD neighborship established across the link.
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