Default Udld Configuration - Cisco Catalyst 3560-X Software Configuration Manual

Configuring UDLD
Configuring UDLD
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Default UDLD Configuration

Table 1-1 Default UDLD Configuration
Feature
UDLD global enable state
UDLD per-port enable state for fiber-optic media
UDLD per-port enable state for twisted-pair (copper) media
UDLD aggressive mode
Configuration Guidelines
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Loop guard works only on point-to-point links. We recommend that each end of the link has a directly
Caution
connected device that is running STP.
Catalyst 3750-X and 3560-X Switch Software Configuration Guide
1-4
Default UDLD Configuration, page 1-4
Configuration Guidelines, page 1-4
Enabling UDLD Globally, page 1-5
Enabling UDLD on an Interface, page 1-6
Resetting an Interface Disabled by UDLD, page 1-6
UDLD is not supported on ATM ports.
A UDLD-capable port cannot detect a unidirectional link if it is connected to a UDLD-incapable
port of another switch.
When configuring the mode (normal or aggressive), make sure that the same mode is configured on
both sides of the link.
Default Setting
Globally disabled
Disabled on all Ethernet fiber-optic ports
Disabled on all Ethernet 10/100 and 1000BASE-TX ports
Disabled
Chapter 1 Configuring UDLD
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