Cisco Catalyst 4500 Series - Disabling UDLD on Individual Interfaces

33-7
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 33 Configuring UDLD
Configuring UDLD on the Switch
Disabling UDLD on Individual Interfaces
To disable UDLD on individual interfaces, perform this task:
Disabling UDLD on a Fiber-Optic Interface
To disable UDLD on individual fiber-optic interfaces, perform this task:
Command Purpose
Step 1
Switch(config-if)# no udld port
Switch(config-if)# no udld fast-hello
Disables UDLD on an interface.
The following applies:
• On fiber-optic interfaces, the no udld port command
reverts the interface configuration to the setting
established with the udld enable global
configuration command.
• For both UDLD and Fast UDLD, if aggressive mode
is configured, then aggressive mode must be
explicitly disabled with the
no udld port aggressive command.
• If normal mode is configured, the no udld port
command disables both UDLD and Fast UDLD.
Disables Fast UDLD on an interface. The interface
reverts to the UDLD configuration that was present
before you enabled Fast UDLD.
Step 2
Switch# show udld interface
Verifies the configuration.
Command Purpose
Step 1
Switch(config-if)# udld port disable
Switch(config-if)# no udld fast-hello
Disables UDLD on a fiber-optic interface and removes
all UDLD and Fast UDLD related configuration on the
interface.
Note You can enable UDLD globally for all fiber-optic
interfaces.
Disables Fast UDLD on an interface, which reverts to the
UDLD configuration that was present before you enabled
Fast UDLD.
Step 2
Switch# show udld interface
Verifies the configuration.