Reference Guide

show udld
This command displays the global settings of UDLD.
Format show udld
Mode
•
User EXEC
•
Privileged EXEC
Column Meaning
Admin Mode The global administrative mode of UDLD.
Message Interval The time period (in seconds) between the transmission of UDLD probe packets.
Timeout Interval The time period (in seconds) before making a decision that the link is unidirectional.
The following example shows CLI display output for the command after the feature was enabled and
nondefault interval values were configured.
(Extreme 220) (Routing) #show udld
Admin Mode..................................... Enabled
Message Interval............................... 13
Timeout Interval............................... 31
show udld unit/slot/port
This command displays the UDLD settings for the specified unit/slot/port. If the all keyword is
entered, it displays information for all ports.
Format
show udld {unit/slot/port | all}
Mode
•
User EXEC
•
Privileged EXEC
Column Meaning
Port The identifying port of the interface.
Admin Mode The administrative mode of UDLD configured on this interface. This is either Enabled or Disabled.
UDLD Mode The UDLD mode configured on this interface. This is either Normal or Aggressive.
UDLD Status The status of the link as determined by UDLD. The options are:
•
Undetermined – UDLD has not collected enough information to determine the state of the port.
•
Not applicable – UDLD is disabled, either globally or on the port.
•
Shutdown – UDLD has detected a unidirectional link and shutdown the port. That is, the port is
in an errDisabled state.
•
Bidirectional – UDLD has detected a bidirectional link.
•
Undetermined (Link Down) – The port would transition into this state when the port link
physically goes down due to any reasons other than the port been put into D-Disable mode by
the UDLD protocol on the switch.
The following example shows CLI display output for the command.
(Extreme 220) #show udld 0/1
Port Admin Mode UDLD Mode UDLD Status
Switching Commands
ExtremeSwitching 200 Series: Command Reference Guide for version 01 .02.04.0007 497