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Configuring SONET/SDH Defect Triggers

 

You can configure SONET/SDH defect triggers as either ignore or hold time. The following topics explain defect triggers in detail.

Configuring SONET/SDH Defect Triggers to Be Ignored

A trigger is a defect alarm that causes a physical interface to be marked down. By default, all defects are honored with no hold time. For SONET/SDH and ATM over SONET/SDH interfaces only, you can configure individual triggers to ignore a defect, honor a defect, and apply up and down hold timers to the defect.

To configure defects to be ignored:

  1. In configuration mode, go to the [edit interfaces interface-name sonet-options trigger] hierarchy level.
  2. Configure the defect ignore option to turn off the loopback capability.

Configuring SONET/SDH Defect Hold Times

To configure hold timers:

  1. In configuration mode, go to the [edit interfaces interface-name sonet-options trigger] hierarchy level.
  2. Configure the hold-time statement with up and down options in milliseconds ranging from 1 through 65,534 milliseconds.

Displaying the Configuration Where the SONET/SDH Defects to be Ignored are Listed

Purpose

To display the configuration where the SONET/SDH defects to be ignored are listed.

Action

To display the defects in an interface, for example on so-1/0/0 interface, perform the following steps:

  1. In configuration mode, go to the [edit interfaces so-1/0/0 sonet-options trigger] hierarchy level.
  2. Issue the show defect operational mode command.

    The following output is displayed:

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