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Cisco IE 2000 Switch Software Configuration Guide
OL-25866-01
Chapter 33 Configuring UDLD
How to Configure UDLD
Enabling UDLD on an Interface
Setting and Resetting UDLD Parameters
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
interface interface-id Specifies the port to be enabled for UDLD, and enters interface
configuration mode.
Step 3
udld port [aggressive] UDLD is disabled by default.
• udld port—Enables UDLD in normal mode on the specified port.
• udld port aggressive—Enables UDLD in aggressive mode on the
specified port.
Note Use the no udld port interface configuration command to
disable UDLD on a specified fiber-optic port.
For more information about aggressive and normal modes, see the
“Modes of Operation” section on page 33-2.
Step 4
end Returns to privileged EXEC mode.
Command Purpose
Step 1
configure terminal Enters global configuration mode.
Step 2
udld reset (Optional) Resets all ports disabled by UDLD.
Step 3
no udld {aggressive | enable} (Optional) Disables the UDLD ports.
Step 4
udld {aggressive | enable} (Optional) Reenables the disabled ports.
Step 5
errdisable recovery cause udld (Optional) Enables the timer to automatically recover from the UDLD
error-disabled state.
Step 6
errdisable recovery interval interval (Optional) Specifies the time to recover from the UDLD error-disabled
state.
Step 7
interface interface-id Enters interface configuration mode.
Step 8
no udld port (Optional) Disables the UDLD fiber-optic port.
Step 9
udld port [aggressive] (Optional) Re-enables the disabled fiber-optic port.
Step 10
shutdown (Optional) Disables an interface port.
Step 11
no shutdown (Optional) Restarts a disabled port.
Step 12
show udld (Optional) Verifies your entries.
