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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
AU_AIS

AU_AIS

Description

The AU_AIS is an alarm indication of the administrative unit (AU). This alarm occurs when the optical interface on the local NE receives the AU pointer of all 1s.

Attribute

Alarm Severity Alarm Type

Major

Communication alarm

Parameters

None.

Impact on the System

If no network protection is configured, path-level services are interrupted.

The system sends the HP_RDI alarm to the opposite end. If subnetwork connection protection (SNCP) is configured, the signal fail (SF) switching occurs.

Possible Causes

Possible causes of this alarm are as follows:

  • The MS_AIS, R_LOC, R_LOS, or R_LOF alarm is generated on the upstream NE.
  • Services are incorrectly configured.
  • The opposite end sends the AU_AIS alarm.
  • The transmit unit at the opposite end is faulty.
  • The receive unit at the local end is faulty.

Procedure

  1. Check whether the VC-4 higher order pass-through services configured on the upstream NE report the MS_AIS, R_LOC, R_LOS, or R_LOF alarm.

    If... Then...
    The R_LOS, R_LOF, R_LOC, or MS_AIS alarm is reported Clear the MS_AIS, R_LOC, R_LOS, or R_LOF alarm. Then, check whether the AU_AIS alarm is cleared. If the AU_AIS alarm persists, go to the next step.
    None of the preceding alarms is reported Go to the next step.

  2. Check whether the AU_AIS alarm is inserted into the transmit unit at the opposite end.

    If... Then...
    The AU_AIS alarm is inserted by the transmit unit at the opposite end Cancel inserting AU_AIS alarm. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.
    The AU_AIS alarm is not inserted by the transmit unit at the opposite end Go to the next step.

  3. Check whether service configurations at the local end and the opposite end are correct.

    If... Then...
    The service configurations are incorrect Correct the service configurations. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.
    The service configurations are correct Go to the next step.

  4. Check whether the board at the opposite end is faulty.

    If... Then...
    The board at the opposite end is faulty Reset or replace the board. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.
    The board at the opposite end is functioning properly Go to the next step.

  5. Check whether the board at the local end is faulty.

    If... Then...
    The board at the local end is faulty Reset or replace the board. Then, check whether the alarm is cleared. If the alarm persists, go to the next step.
    The board at the local end is functioning properly Go to the next step.

  6. If the alarm persists, contact Huawei technical support engineers to handle the alarm.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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