Default Udld Configuration; Configuring Udld; Enabling Udld Globally - Cisco 7609 Configuration Manual

Chapter 31

Configuring UDLD

Default UDLD Configuration

Table 31-1
Table 31-1 UDLD Default Configuration
Feature
UDLD global enable state
UDLD aggressive mode
UDLD per-port enable state for fiber-optic media
UDLD per-port enable state for twisted-pair (copper) media
Configuring UDLD
These sections describe how to configure UDLD:
•
•
•
•
•
Note With Release 12.1(11b)E and later releases, when you are in configuration mode you can enter EXEC
mode-level commands by entering the do keyword before the EXEC mode-level command.

Enabling UDLD Globally

To enable UDLD globally on all fiber-optic LAN ports, perform this task:
Command
Router(config)# udld {enable | aggressive}
Router(config)# no udld {enable | aggressive}
78-14064-04
shows the default UDLD configuration.
Enabling UDLD Globally, page 31-3
Enabling UDLD on Individual LAN Interfaces, page 31-4
Disabling UDLD on Fiber-Optic LAN Interfaces, page 31-5
Configuring the UDLD Probe Message Interval, page 31-5
Resetting Disabled LAN Interfaces, page 31-6
Default Value
Globally disabled
Disabled
Enabled on all Ethernet fiber-optic LAN ports
Disabled on all Ethernet 10/100 and 1000BASE-TX LAN
ports
Purpose
Enables UDLD globally on fiber-optic LAN ports.
This command only configures fiber-optic LAN ports.
Note
Individual LAN port configuration overrides the
setting of this command.
Disables UDLD globally on fiber-optic LAN ports.
Cisco 7600 Series Router Cisco IOS Software Configuration Guide—12.1E
Default UDLD Configuration
31-3