IBM 12.1(22)EA6 - Manual (Page 322)

16-4
Cisco Systems Intelligent Gigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
24R9746
Chapter 16 Configuring UDLD
Configuring UDLD
Configuring UDLD
This section describes how to configure UDLD on your switch. It contains this configuration
information:
• Default UDLD Configuration, page 16-4
• Configuration Guidelines, page 16-4
• Enabling UDLD Globally, page 16-5
• Enabling UDLD on an Interface, page 16-6
• Resetting an Interface Shut Down by UDLD, page 16-6
Default UDLD Configuration
Table 16-1 shows the default UDLD configuration.
Configuration Guidelines
These are the UDLD configuration guidelines:
• A UDLD-capable interface also 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.
Table 16-1 Default UDLD Configuration
Feature Default Setting
UDLD global enable state Globally disabled
UDLD per-interface enable state for fiber-optic media Disabled on all Ethernet fiber-optic interfaces
UDLD per-interface enable state for twisted-pair (copper)
media Disabled on all 1000BASE-TX interfaces
UDLD aggressive mode Disabled