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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).
PWAPS_LOST

PWAPS_LOST

Description

The PWAPS_LOST alarm indicates that no PW APS frame is received from the protection channel of a PW APS protection group.

Attribute

Alarm Severity Alarm Type

Minor

Communication alarm

Parameters

None.

Impact on the System

Service protection fails.

Possible Causes

Possible causes of the PWAPS_LOST alarm are as follows:

  • The opposite NE is not configured with PW APS protection.
  • The PW APS protocol is disabled on the opposite NE.
  • The service on the protection channel of a PW APS protection group is interrupted.

Procedure

  1. On the U2000, check whether the opposite NE is configured with PW APS protection.
    If... Then...

    The opposite NE is configured with PW APS protection

    Go to the next step.

    The opposite NE is not configured with PW APS protection

    Configure PW APS protection on the opposite NE according to the NE planning information. Ensure that the configuration on the opposite NE is consistent with the configuration on the local NE. Then, enable the APS protocol. Check whether the alarm is cleared. If the alarm persists, go to the next step.

  2. Check whether the PW APS protocol is enabled on the opposite NE.
    If... Then...

    The protocol is enabled

    Go to the next step.

    The protocol is disabled

    Disable the PW APS protocol on the local NE and then enable the protocol at both ends. Check whether the alarm is cleared. If the alarm persists, go to the next step.

  3. Check whether the protection channel reports an alarm indicating signal loss or signal degrade.
    If... Then...

    An alarm indicating signal loss or signal degrade is reported

    Rectify the fault on the protection channel and check whether the alarm is cleared. If the alarm persists, go to the next step.

    No alarm indicating signal loss or signal degrade is reported

    Go to the next step.

  4. 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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