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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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The LP_TIM_VC3 is an alarm indicating the mismatch of the lower order path trace identifier received by the tributary board.


Alarm Severity Alarm Type


Communication alarm


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

This alarm does not have any impact on the system.

Possible Causes

The possible causes of the LP_TIM_VC3 alarm are as follows:

  • The lower order path trace identifier to be received at the local station is configured inconsistent with that transmitted at the opposite station.

  • The services are incorrectly configured.


  1. Check whether the trace identifier transmitted at the corresponding path of the tributary board at the opposite station is configured consistent with that to be received at the local station. If not, modify them to be consistent and issue the configuration again.
  2. View alarms on the U2000 to check whether the LP_TIM_VC3 alarm is cleared.

    If... Then...
    If this alarm is cleared The fault is removed. End the alarm handling.
    If this alarm persists Proceed to the next step.

  3. Check whether the services at the opposite station and the local station are correctly configured. If not, modify the incorrect configuration and issue it again.
  4. If the alarm persists, replace the faulty board.

Related Information


Updated: 2019-01-21

Document ID: EDOC1100020975

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