29-6
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 29 Configuring UDLD
Displaying UDLD Status
Resetting an Interface Disabled by UDLD
Beginning in privileged EXEC mode, follow these steps to reset all ports disabled by UDLD:
You can also bring up the port by using these commands:
•
The
shutdown
interface configuration command followed by the
no shutdown
interface
configuration command restarts the disabled port.
•
The
no udld
{
aggressive | enable
}
global configuration command followed by the
udld
{
aggressive | enable
} global configuration command re-enables the disabled ports.
•
The
no
udld port
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.
Displaying UDLD Status
To display the UDLD status for the specified port or for all ports, use the
show udld
[
interface-id
]
privileged EXEC command.
For detailed information about the fields in the command output, see the command reference for this
release.
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 29-1
.
Step 4
end
Return to privileged EXEC mode.
Step 5
show udld
interface-id
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Command
Purpose
Step 1
udld reset
Reset all ports disabled by UDLD.
Step 2
show udld
Verify your entries.
