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ONT BIP error.

ONT BIP error.

Created: Mar 15, 2021 06:57:40Latest reply: Jan 30, 2022 22:40:21 3629 20 0 0 0
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Hi, 


What is DS&US Frame BIP error? why do these values increase ?  How can we solve the problem


ONT model ONT8247w

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Nino_Chou
Admin Created Mar 15, 2021 07:41:06

Hi, friend.


Downstream frame BIP error count (DS Frame BIP): Indicates the count of downstream frame BIP errors since the OLT starts up.

Upstream frame BIP error count (US Frame BIP): Indicates the count of upstream frame bit-interleaved parity (BIP) errors since the OLT starts up. The GPON Encapsulation Mode (GEM) frame is checked, and if the frame is faulty, a BIP error is considered as generated. The line quality decreases with the count of BIP error.


There are many reasons for the increase of the error count, which need to be manually checked. For example, the transmission line is faulty (the fiber is faulty or the connector has foreign objects) or the ONT optical module is faulty.


Similarly, you can run the following command on the OLT:

display statistics ont-line-quality

This command is used to query the line quality statistics for an optical network terminal (ONT) under the xPON port. You can monitor the line quality either by related alarms or line quality statistics. When you monitor the line quality by line quality statistics, you can mask the line quality alarms, which reduces the number of alarms and therefore reduces the CPU usage to promote system performance.


Thanks.

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fargat
fargat Created Mar 15, 2021 07:50:05 (0) (0)
Thanks for your answer, I cannot see alarm

Line quality statistic ONTID : 13
LOFi alarm count : 0
DOWi alarm count : 0
Upstream frame delimiter error count : 1164
Upstream frame BIP error count : 631056
Downstream frame BIP error count : 6984
Upstream frame FEC corrected blocks : 0
Upstream frame FEC uncorrected blocks : 0
Upstream frame HEC error count : 570347
Upstream FCS error count  
Nino_Chou
Nino_Chou Reply fargat  Created Mar 15, 2021 07:56:18 (0) (0)
Hi, do you mean you don't understand what the LOFi alarm and DOWi alarm mean?  
fargat
fargat Reply Nino_Chou  Created Mar 15, 2021 08:15:07 (0) (0)
Yes, Solution is to replace ONT or replace the fiber connected to the ONT.  
Nino_Chou
Nino_Chou Reply fargat  Created Mar 15, 2021 08:25:40 (0) (0)
OK, I have replied below, please check, thank you.  
(0) (0)
from 7#
user_40257687
user_40257687 Created Jan 7, 2022 14:09:50

For more information about ONTs, click: ONT FAQs

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2#
Nino_Chou
Nino_Chou Admin Created Mar 15, 2021 06:59:24

Hello, friend!
It's nice to meet you in the community.
We're working on getting the right answer for you.
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3#
Nino_Chou
Nino_Chou Admin Created Mar 15, 2021 07:15:09

Hi, friend.

Can you tell me where or through what command did you see this error?

Thanks.
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fargat
fargat Created Mar 15, 2021 07:23:05 (0) (0)
No command I am looking at this error on NCE  
Nino_Chou
Nino_Chou Reply fargat  Created Mar 15, 2021 07:42:01 (0) (0)
Hi, I have replied below, please check, thank you.  
(1) (0)
4#
Nino_Chou
Nino_Chou Admin Created Mar 15, 2021 07:41:06

Hi, friend.


Downstream frame BIP error count (DS Frame BIP): Indicates the count of downstream frame BIP errors since the OLT starts up.

Upstream frame BIP error count (US Frame BIP): Indicates the count of upstream frame bit-interleaved parity (BIP) errors since the OLT starts up. The GPON Encapsulation Mode (GEM) frame is checked, and if the frame is faulty, a BIP error is considered as generated. The line quality decreases with the count of BIP error.


There are many reasons for the increase of the error count, which need to be manually checked. For example, the transmission line is faulty (the fiber is faulty or the connector has foreign objects) or the ONT optical module is faulty.


Similarly, you can run the following command on the OLT:

display statistics ont-line-quality

This command is used to query the line quality statistics for an optical network terminal (ONT) under the xPON port. You can monitor the line quality either by related alarms or line quality statistics. When you monitor the line quality by line quality statistics, you can mask the line quality alarms, which reduces the number of alarms and therefore reduces the CPU usage to promote system performance.


Thanks.

View more
  • x
  • convention：

fargat
fargat Created Mar 15, 2021 07:50:05 (0) (0)
Thanks for your answer, I cannot see alarm

Line quality statistic ONTID : 13
LOFi alarm count : 0
DOWi alarm count : 0
Upstream frame delimiter error count : 1164
Upstream frame BIP error count : 631056
Downstream frame BIP error count : 6984
Upstream frame FEC corrected blocks : 0
Upstream frame FEC uncorrected blocks : 0
Upstream frame HEC error count : 570347
Upstream FCS error count  
Nino_Chou
Nino_Chou Reply fargat  Created Mar 15, 2021 07:56:18 (0) (0)
Hi, do you mean you don't understand what the LOFi alarm and DOWi alarm mean?  
fargat
fargat Reply Nino_Chou  Created Mar 15, 2021 08:15:07 (0) (0)
Yes, Solution is to replace ONT or replace the fiber connected to the ONT.  
Nino_Chou
Nino_Chou Reply fargat  Created Mar 15, 2021 08:25:40 (0) (0)
OK, I have replied below, please check, thank you.  
(0) (0)
5#
Nino_Chou
Nino_Chou Admin Created Mar 15, 2021 08:24:38

Hi, friend.


The LOFi alarm count: Indicates the times of loss of frame of onu indication(LOFi) alarm since the ONT goes on line. If four consecutive frames of an OLT fail to locate an upstream frame of an ONU, the LOFi alarm is generated, the system reports the 0x2e112006 The loss of frame of ONU indication (LOFi) occurs alarm, and the ONU goes offline. This alarm is different from the loss of optical signals of ONU indication(LOSi) alarm, as the LOSi alarm is generated when four consecutive frames of an OLT fail to receive an upstream optical signal of an ONU, LOFi can receive upstream optical signal of the ONU, but fails to locate the upstream frame.


The DOWi alarm count: Indicates the times of drift of window of onui (DOWi) since the OLT starts up.


As for the solution to reduce the DS Frame BIP count or US Frame BIP count, I cannot identify the solution. The possible causes are as follows: The fiber connector is dirty, the fiber is bent excessively, the splicing quality is poor, and the ONT optical module is faulty. You need to check it out.


Thanks.

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Saqib123
Saqib123 Created Mar 19, 2021 16:40:08 (0) (0)
 
Saqib123
Saqib123 Created Mar 19, 2021 16:40:20 (0) (0)
 
shakeela
shakeela Reply Saqib123  Created Mar 19, 2021 16:44:37 (0) (0)
 
shakeela
shakeela Reply Saqib123  Created Mar 19, 2021 16:44:43 (0) (0)
 
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Saqib123 Reply shakeela  Created Mar 20, 2021 17:45:46 (0) (0)
 
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Saqib123 Reply shakeela  Created Mar 20, 2021 17:45:56 (0) (0)
 
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6#
fargat
fargat Created Mar 15, 2021 08:30:56

Thank you very much.
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Nino_Chou
Nino_Chou Created Mar 15, 2021 08:31:42 (0) (0)
You're welcome. Glad to help you, my friend.  
(0) (0)
7#
user_40257687
user_40257687 Created Jan 7, 2022 14:09:50

For more information about ONTs, click: ONT FAQs

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(0) (0)
8#
user_4580211
user_4580211 Created Jan 30, 2022 22:40:21

Hi , could you please explain what scape error is? Thanks
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