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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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LP_RDI_VC3

LP_RDI_VC3

Description

The LP_RDI_VC3 is an alarm indicating a remote defect in the lower order path of the tributary board.

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-3 path number that generates the alarm.

Impact on the System

When the LP_RDI_VC3 alarm occurs, the opposite station receives the TU_AIS, TU_LOP, LP_TIM, or LP_UNEQ alarm and then returns the LP_RDI_VC3 alarm (VC-12: V5[b8], VC3: G1[b5]) to the local tributary board.

Possible Causes

The possible causes of the LP_RDI_VC3 alarm are as follows:

  • The opposite station has received the TU_AIS, TU_LOP, LP_TIM, or LP_UNEQ alarm.

  • The receive part at the opposite station is faulty.
  • The transmit part at the local station is faulty.

Procedure

  1. View alarms of the NE, and check whether there is the TU_AIS, TU_LOP, LP_TIM, or LP_UNEQ alarm in the corresponding path of the tributary board at the opposite station.

    If... Then...
    There is the TU_AIS, TU_LOP, LP_TIM, or LP_UNEQ alarm Refer to the corresponding section in this document to clear the alarm.
    There are no such alarms as the TU_AIS, TU_LOP, LP_TIM, or LP_UNEQ Proceed to the next step.

  2. If there is no alarm or the corresponding alarm is cleared at the opposite station, the LP_RDI_VC3 alarm persists. The tributary board is faulty. Replace the faulty board.

    Replacing the tributary board will interrupt services. This operation is of risk.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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