UDLD Commands 789debug udldUse the debug udld command in Privileged EXEC mode to enable thedisplay of UDLD packets or event processing.Use the no form of the command to disable debugging.Syntaxdebug udld {packet [receive|transmit]|events}no debug udld {packet [receive|transmit]|events}• Packet—Display transmitted and received UDLD packets.• Receive—Debug packets received by the switch.• Transmit—Debug packets transmitted by the switch.• Events—Display UDLD events.Default ConfigurationBy default, debugging is disabled.Command ModePrivileged EXEC modeUDLD Status The status of the link as determined by UDLD. The optionsare:• Undetermined – UDLD has not collected enough informationto determine the state of the port.• Not applicable – UDLD is disabled, either globally or on theport.• Shutdown – UDLD has detected a unidirectional link andshutdown 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 intothis state when the port link physically goes down due to anyreasons other than the port being put into D-Disable mode bythe UDLD protocol on the switch.Field Description
