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Cisco Bug: CSCvv59312 - [NCS4200-3GMS] OC48 SONET controller status shows UP without receiving signal

Last Modified

Sep 09, 2020

Products (1)

  • Cisco ASR 900 Series Aggregation Services Routers

Known Affected Releases

16.12.3 16.12.4

Description (partial)

Symptom:
show controller SONET x/y/x giving wrong indication of UP even no signal received

Conditions:
Once PPM RX loss happens, IOS won't detect PPM controller DOWN condition.
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