Cisco Catalyst 2960 Command Reference Manual page 609

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Chapter 2 Catalyst 2960 Switch Cisco IOS Commands

You can use these commands to reset an interface shut down by UDLD:

This example shows how to enable UDLD on an port:

Switch(config)# interface gigabitethernet0/1

Switch(config-if)# udld port

This example shows how to disable UDLD on a fiber-optic interface despite the setting of the udld

global configuration command:

Switch(config)# interface gigabitethernet0/1

Switch(config-if)# no udld port

You can verify your settings by entering the show running-config or the show udld interface privileged

EXEC command.

Related Commands

show running-config

The udld reset privileged EXEC command to reset all interfaces shut down by UDLD

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 re-enable UDLD globally

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

Displays the running configuration on the switch. For syntax

information, select Cisco IOS Configuration Fundamentals Command

Reference, Release 12.2 > File Management Commands >

Configuration File Management Commands.

Displays UDLD administrative and operational status for all ports or

the specified port.

Enables aggressive or normal mode in UDLD or sets the configurable

message timer time.

Resets all interfaces shut down by UDLD and permits traffic to again

pass through.

Catalyst 2960 Switch Command Reference