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what is problems when you get high bit error in line card ?

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Question added by mohammed elmustafa mohammed , telecommunication engineer , National Electricity Corporation -sudan
Date Posted: 2013/06/16
Abraham Yohannan
by Abraham Yohannan , Senior Network Support Specialist , AT&T

Multiple factors can cause high bit rate errors on line card - Bad RX levels; bad RX card; bad attenuator in between; dirty fiber and bad TX card

Mohamed Arafa Abdalla
by Mohamed Arafa Abdalla , Senior Manager Data Center Operations | Optical Network , Integrated Telecom company

It depends on the location of receiving these errors whether it is on RS or MS or path (B1,B2,B3).

if it is on MS or RS so you can follow the below steps:

1- Check the Rx power on the NMS,if it is OK go to step2.

2-Put hardware loop with attenuater on the line card SFP if all errors cleared so card and the sfp are ok and the errors coming from the other end.

3- put tester on the fibers and start loop testing to determine the source of errors.

Dear Mohammed you should checlk the media connectivity (Fiber by OTDR,batch cord or the board it self

Balaji Ramadass
by Balaji Ramadass , Asst Manager in Network , ALCATEL LUCENT LTD

Dear Mohammed,  RX optical fiber power will be in thershold level, due to that will get affect high bit errors in line card.

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