Cisco Catalyst 2950 Command Reference Manual page 551

Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
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Examples
This example shows how to enable UDLD in normal mode 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
show running-config
show udld
udld port
udld reset
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The no udld enable global configuration command followed by the udld {aggressive | enable}
global configuration command to re-enable UDLD globally
The no udld port enable 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
Description
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.
Displays the UDLD 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 any interface shut down by UDLD and permits traffic to again pass
through.
Catalyst 2950 and Catalyst 2955 Switch Command Reference
udld
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