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

Reminder

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

upgrade

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).
VC3BBE

VC3BBE

Performance Event Meaning

The VC3BBE event indicates the VC3 background block error.

Performance Event Attributes

Performance Event ID Performance Event Type

0x50

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 B3 bit error threshold-crossing threshold and degrade threshold, the B3_EXC and B3_SD alarms will be generated.

Possible Causes

The VC3BBE event indicates bit errors that are detected in a verification and exclude the higher-order path unavailable time and higher-order path severely errored 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

B3_EXC_VC3

B3 bit errors crossing the threshold

B3_SD_VC3 Signals degraded (B3)

Procedure

  1. Eliminate external causes, such as poor grounding, high operating temperature, low or high received optical power of the line board. In this case, perform the grounding again. Alternatively, find a better operating environment. For more information about solving the optical power problem, see RPLCUR. Then, check whether bit errors occur on the line boards.
  2. If all the line boards of an NE have bit errors, the clock unit may be faulty. In this case, replace the CXL board.
  3. If only a line board reports that bit errors exist, the local line board may be faulty or that the opposite NE or fibers are faulty. Locate the faulty board by using the loopback method. Then, replace the faulty board with a new one.

Reference

None.

Translation
Download
Updated: 2019-01-21

Document ID: EDOC1100020975

Views: 75462

Downloads: 138

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