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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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R_APS

R_APS

Description

The R_APS alarm indicates that the line board fails to receive the K byte.

Attribute

Alarm Severity Alarm Type

Minor

Communication alarm

Parameters

None.

Impact on the System

When the R_APS alarm occurs, the line board fails to receive the K byte. If the services are configured with MSP switching, the MSP switching will fail.

Possible Causes

Possible causes of the R_APS alarm are as follows:

  • The K bytes are inconsistent in any consecutive three frames of the 12 frames received by the line board.

Procedure

  1. Check the line board. That is, perform selfloop on the optical port of the line board.
  2. View alarms on the NMS to check whether the R_APS alarm is cleared.

    If... Then...

    The alarm is cleared

    Go to the next step.

    The alarm persists

    The line board is faulty. Replace the board.

  3. If the opposite line board is faulty, replace the board.

Related Information

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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