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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The ODUk_PM_SSF alarm indicates that signals fail at the ODUk PM server layer.

k indicates the level of rate, its value is 0, 1, 2, 3, or flex.


Alarm Severity Alarm Type


Communication alarm



Impact on the System

Services carried on the channel that reports an ODUk_PM_SSF alarm are interrupted.

Possible Causes

  • An ODUk_PM_AIS or OTUk_TIM alarm is reported on the NE that reports an ODUk_PM_SSF alarm.


  1. Check information about the ODUk_PM_SSF alarm on the NMS, and find the channel reporting the ODUk_PM_SSF alarm and the optical port housing the channel.
  2. Check for an ODUk_PM_AIS or OTUk_TIM alarm on the NE housing the optical port. If the NE reported any such alarms, clear these alarms.
  3. Check whether the ODUk_PM_SSF alarm is cleared. If the alarm persists, contact Huawei engineers to handle the alarm.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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