Configuring Udld; Default Udld Configuration; Configuration Guidelines - Cisco ME 3400G-2CS - Ethernet Access Switch Software Configuration Manual

Configuring UDLD

Configuring UDLD
These sections contain this configuration information:
•
•
•
•
•

Default UDLD Configuration

Table 23-1
Table 23-1 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

These are the UDLD configuration guidelines:
•
•
•
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
23-4
Default UDLD Configuration, page 23-4
Configuration Guidelines, page 23-4
Enabling UDLD Globally, page 23-5
Enabling UDLD on an Interface, page 23-5
Resetting an Interface Disabled by UDLD, page 23-6
shows the default UDLD configuration.
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 23 Configuring UDLD
78-17058-01