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OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

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C3794_LCV_SDH

C3794_LCV_SDH

Performance Event Meaning

The C3794_LCV_SDH performance event indicates the C37.94 port line-side code violation count.

Performance Event Attributes

Performance Event ID Performance Event Type

0x3e72

SDH performance event

Impact on the System

If bit errors occur in the services, you need to find out the causes and troubleshoot the problem in time. Otherwise, alarms will be generated and the signal transmission quality will be affected.

Possible Causes

The C3794_LCV_SDH performance event indicates the C37.94 port line-side code violation count.

External causes:

  • The fiber performance is degraded, and the fiber has extremely high attenuation.
  • The fiber connector is dirty or incorrect.
  • The equipment is poorly grounded.
  • There is a strong interference source around the equipment.
  • The working temperature is extremely high or extremely low, and the opposite equipment cannot tolerate such temperature.

Equipment problems:

  • Wrong service code types are selected.
  • A board fails or its performance degrades.

Relevant Alarms

None.

Procedure

  1. First eliminate external causes, such as poor grounding, too high operating temperature, too low or too high the receiving optical power of the line board.
  2. Check whether the correct C37.94 service code is selected. If not, modify the code of the services received by a board by setting the code type of the board.
  3. The port of the tributary board may be faulty. Replace the board.

Reference

None.

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Updated: 2019-01-21

Document ID: EDOC1100020975

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