Cisco Systems ME3400G2CSA Configuring UDLD

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Cisco ME 3400 EthernetAccess Switch SoftwareConfiguration Guide
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Chapter23 Configuring UDLD
Configuring UDLD
Configuring UDLD
These sections contain this configuration information:
•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
Default UDLD Configuration
Table23-1 shows the de fault U DLD configur ation.
Configuration Guidelines
These are the UDLD configuration guidelines:
•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.
Table23-1 Default UDLD Configuration
Feature Default Setting
UDLD global enable state Globally disabled
UDLD per-port enable state for fiber-optic media Disabled on all Ethernet fiber-optic ports
UDLD per-port enable state for twisted-pair (copper) media Disabled on all Ethernet 10/100 and 1000BASE-TX ports
UDLD aggressive mode Disabled