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FAQ-SDH Parameter Explanation under POS Interface

Publication Date:  2012-07-27 Views:  195 Downloads:  0
Issue Description
Q:
Check POS interface state with "display interface pos" command and there is B1, B2 and B3 under SDH error, what is their meaning?
Alarm Information
Null
Handling Process
A:
For the output of display interface pos, there is B1, B2 and B3 under SDH error. e.g.
<NE80E>displsy interface pos 1/0/0
Pos1/0/0 current state : UP
Line protocol current state : UP
         ..........    
   SDH error:
     section layer:  B1 463371
     line    layer:  B2 29095741  REI 220764795
     path    layer:  B3 1208277
         ..........
B1: bit interleaved parity order 8, BIP-8
B2: multiplex section BIP-24. Except RSOH, parity check before scramble and it is used for bit error monitoring of multiplex monitoring.
REI: Remote  Error  Indication
B3: channel BIP-8. B3 is to monitor error performance of VC4 transmission in STM-N, namely, error performance of 140mb/s signal in STM―N. It is similar to B1 and B2. B3 has BIP―8 check for VC4 frame.
Root Cause
Null
Suggestions
Null

END

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