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Cisco Bug: CSCvt42479 - Q-MARGIN value is not set to default on LOS

Last Modified

Jun 16, 2020

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases

7.2(1)

Description (partial)

Release-note

Symptom:
Having a LOS on a ntwrk lane , Q-margin and Q-factor are not set to -5db and 0db respectively.

Conditions:
When the ntwrk lane has DeMOD lock but the OSNR is well below the FEC threshold, this cause high BER.
In this conditions Enhanced Qmargin will read wrong values.
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