Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Navigation

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.
    [edit]user@host# edit interfaces interface-name sonet-options trigger
  2. Configure the defect ignore option to turn off the loopback capability.
    [edit interfaces interface-name sonet-options trigger]user@host# set defect ignore

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.
    [edit]user@host# edit interfaces interface-name sonet-options trigger
  2. Configure the hold-time statement with up and down options in milliseconds ranging from 1 through 65,534 milliseconds.
    [edit interfaces interface-name sonet-options trigger]user@host# set defect hold-time up milliseconds down milliseconds

Displaying the Configuration for SONET/SDH Defects to Be Ignored

Purpose

To display the configuration for SONET/SDH defects to be ignored.

Action

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

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

    The following output is displayed:

    ais-l ignore;
    lof ignore;
    los ignore;
    pll ignore;
    rfi-l ignore;
    rfi-p ignore;

Published: 2012-12-05