Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?




Hierarchy Level


Specify defect triggers.


By default, triggers are ignored.


trigger-identifier—Trigger identifier. It can be one of the following:

  • oc-lof—Optical channel Loss of Frame defect trigger.

  • oc-lom—Optical channel Loss of Multiframe defect trigger.

  • oc-los—Optical channel Loss of Signal defect trigger.

  • oc-tsf—Optical channel TOE security functionality (TSF) defect trigger.

  • oc-wavelength-lock—Optical channel Wavelength Lock defect trigger.

  • odu-ais—ODU Alarm Indication Signal defect trigger.

  • odu-bdi—ODU Backward Defect Indication defect trigger.

  • odu-bei—ODU Backward Error Indication defect trigger.

  • odu-iae—ODU IAE defect trigger.

  • odu-lck—ODU Locked defect trigger.

  • odu-oci—ODU Open Connection Indication defect trigger.

  • odu-sd—ODU Signal Degrade defect trigger.

  • odu-ttim—ODU Trail Trace Identifier Mismatch defect trigger.

  • opu-ptim—Payload Type Identifier Mismatch defect trigger.

  • otu-ais—OTU Alarm Indication Signal defect trigger.

  • otu-bdi—OTU Backward Defect Indication defect trigger.

  • otu-fec-deg—OTU FEC Degrade defect trigger.

  • otu-fec-exe—OTU FEC Excessive Error defect trigger.

  • otu-iae—OTU Incoming Alignment defect trigger.

hold-time hold-time-value—Hold time value. It can be one of the following:

  • down—Delay before marking interface down when defect occurs (1..65534 milliseconds).

  • up—Delay before marking interface up when defect is absent (1..65534 milliseconds).


The trigger hold time value alone does not mark an interface to be up when the defect is absent or mark an interface to be down when the defect occurs. The hold time value only impacts the alarm reporting time. To mark an interface up or down, you must also configure the physical interface hold time at the [edit interfaces interface-name hierarchy level].

Required Privilege Level

interface—To view this statement in the configuration.

interface-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 17.2R1.