Cisco ME 3400 Command Reference Manual page 738

udld port
If the switch software detects a small form-factor pluggable (SFP) module change and the port changes
from fiber optic to nonfiber optic or the reverse, all configurations are maintained.
You can use these commands to reset an interface shut down by UDLD:
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Examples
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 Command
show running-config
show udld
udld
udld reset
Cisco ME 3400 Ethernet Access Switch Command Reference
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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
Chapter 2 Cisco ME 3400 Ethernet Access Switch Cisco IOS Commands
Description
Displays the operating configuration.
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.
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