No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search


To have a better experience, please upgrade your IE browser.


OSN 500 550 580 V100R008C50 Alarms and Performance Events Reference 02

Rate and give feedback :
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).


Performance Event Meaning

The RSES event indicates the regenerator section errored second.

Performance Event Attributes

Performance Event ID Performance Event Type


SDH performance event

Impact on the System

If bit errors occur in the services, identify the causes and rectify the fault immediately. Otherwise, alarms will be generated and the signal transmission quality will be affected. If bit errors exceed the B1 bit error threshold-crossing threshold and degrade threshold, the B1_EXC and B1_SD alarms will be generated.

Possible Causes

The RSES event occurs when one or multiple bit error blocks are detected within one second or when the R_LOS or R_LOF alarm is detected in a second.

External causes:

  • The fiber performance is degraded, and the fiber has high attenuation.

  • The fiber connector is dirty or incorrect.

  • The equipment is poorly grounded.

  • There is a severe interference source around the equipment.

  • The working temperature is high or low, and the opposite equipment cannot tolerate such temperature.

Equipment problems:

  • The signal attenuation on the receive side of the line board is excessive, the transmit circuit at the opposite end is faulty, or the receive circuit at the local end is faulty.

  • The synchronization performance of the clock is poor.

  • The cross-connect unit and the line board poorly match.

  • The board becomes faulty, or the performance of the board is degraded.

Relevant Alarms

Alarm Name Correlation


B1 bit errors crossing the threshold


Signals degraded (B1)


The signal on the receiver line side is lost.


The out-of-frame fault occurs on the receiver line side.


  1. If the R_LOS or R_LOF alarm occurs, a fiber cut, severe attenuation, received overload, or faulty board may exist.
    1. Add an attenuator if the received optical power is overloaded.
    2. Check the fiber and optical connector. Clean the fiber connector.
    3. Replace the board.
  2. See RSBBE.



Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75370

Downloads: 138

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Previous Next