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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).
LP_UNEQ_VC12

LP_UNEQ_VC12

Description

The LP_UNEQ_VC12 alarm indicates that the VC-12 path is not loaded with signals.

Attribute

Alarm Severity Alarm Type

Minor

Communication alarm

Parameters

When you view an alarm on the network management system, select the alarm. In the Alarm Details field display the related parameters of the alarm. The alarm parameters are in the following format: Alarm Parameters (hex): parameter1 parameter2...parameterN. For details about each parameter, refer to the following table.

Name Meaning

Parameter 1

Indicates the logical port number, and the value is always 0x01.

Parameter 2, parameter 3

Indicates the VC-12 path number that generates the alarm.

Impact on the System

When the LP_UNEQ_VC12 alarm occurs, no services are loaded in the payload of the lower order path (VC-12: V5 [b5-b7], VC-3: C2) received by the board on the cross-connection side from the opposite station.

Possible Causes

The possible causes of the LP_UNEQ_VC12 alarm are as follows:

  • The lower order path at the opposite station of the SDH transmission equipment is unused.

  • The T_ALOS alarm is reported on the board at the opposite station of the SDH transmission equipment, and the LP_UNEQ_VC12 is enabled to be inserted.

Procedure

  1. Check whether the lower order path at the opposite station is set unused. If the lower order path is used, go to step 3; If the path is not used, set the path to use.
  2. View alarms on the NMS to check whether the LP_UNEQ alarm is cleared.
    If... Then...

    This alarm is cleared

    The fault is removed. End the alarm handling.

    This alarm persists

    Proceed to the next step.
  3. Check whether the T_ALOS alarm is reported on the board at the opposite station and whether the LP_UNEQ_VC12 is enabled to be inserted. Clear the T_ALOS alarm or disable the LP_UNEQ_VC12 to be inserted.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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