Resetting An Interface Disabled By Udld; Displaying Udld Status - Cisco Catalyst 3750 Software Configuration Manual

Displaying UDLD Status

Command
Step 3 udld port {aggressive | disable}
Step 4
end
Step 5
show udld interface-id
Step 6 copy running-config startup-config

Resetting an Interface Disabled by UDLD

Beginning in privileged EXEC mode, follow these steps to reset all interfaces disabled by UDLD:
Command
Step 1 udld reset
Step 2 show udld
You can also bring up the interface by using these commands:
•
•
•
•
Displaying UDLD Status
To display the UDLD status for the specified interface or for all interfaces, use the show udld
[interface-id] privileged EXEC command.
For detailed information about the fields in the display, refer to the command reference for this release.
Catalyst 3750 Metro Switch Software Configuration Guide
20-6
The shutdown interface configuration command followed by the no shutdown interface
configuration command restarts the disabled interface.
The no udld {aggressive | enable} global configuration command followed by the udld
{aggressive | enable} global configuration command re-enables the disabled interfaces.
The udld port disable interface configuration command followed by the udld port [aggressive]
interface configuration command re-enables the disabled fiber-optic port.
The errdisable recovery cause udld global configuration command enables the timer to
automatically recover from the UDLD error-disabled state, and the errdisable recovery interval
interval global configuration command specifies the time to recover from the UDLD error-disabled
state.
Purpose
UDLD is disabled by default.
• udld port—Enables UDLD in normal mode on the specified
interface.
• udld port aggressive—Enables UDLD in aggressive mode on the
specified interface.
• udld port disable—Disables UDLD on the specified fiber-optic
port. This command overrides the UDLD global setting and is
available only on fiber-optic ports.
For more information about aggressive and normal modes, see the
"Modes of Operation" section on page
Return to privileged EXEC mode.
Verify your entries.
(Optional) Save your entries in the configuration file.
Purpose
Reset all interfaces disabled by UDLD.
Verify your entries.
Chapter 20 Configuring UDLD
20-1.
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