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Chapter 22
Configuring UDLD
Default UDLD Configuration
Table 22-1
Table 22-1 UDLD Default Configuration
Feature
UDLD global enable state
UDLD per-port enable state
UDLD message interval
UDLD aggressive mode
Configuring UDLD
These sections describe how to configure UDLD:
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•
•
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•
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Enabling UDLD Globally
You must enable UDLD globally before any port can use UDLD.
To enable UDLD globally on the switch, perform this task in privileged mode:
Task
Step 1
Enable UDLD globally on the switch.
Step 2
Verify the configuration.
This example shows how to enable UDLD globally and verify the configuration:
Console> (enable) set udld enable
UDLD enabled globally
Console> (enable) show udld
UDLD
Console> (enable)
78-12647-02
shows the default UDLD configuration.
Enabling UDLD Globally, page 22-3
Enabling UDLD on Individual Ports, page 22-4
Disabling UDLD on Individual Ports, page 22-4
Disabling UDLD Globally, page 22-4
Specifying the UDLD Message Interval, page 22-5
Enabling UDLD Aggressive Mode, page 22-5
Displaying the UDLD Configuration, page 22-6
: enabled
Software Configuration Guide—Catalyst 4000 Family, Catalyst 2948G, Catalyst 2980G, Releases 6.3 and 6.4
Default Value
Globally disabled
Enabled on all Ethernet, Fast Ethernet, and
•
Gigabit Ethernet ports using fiber-optic
media
Disabled on all Ethernet and Fast Ethernet
•
ports using copper media
15 seconds
Disabled
Command
set udld enable
show udld
Default UDLD Configuration
22-3
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