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Cisco Bug: CSCtb72815 - Stuck DNU observed for few members after SD/SF cleared with Latency220ms

Last Modified

Feb 05, 2017

Products (1)

  • Cisco ONS 15454 Series Multiservice Provisioning Platforms

Known Affected Releases


Description (partial)

Symptom:Stuck / Toggling DNU observed on HW-LCAS circuits after Sonet Defects are cleared on the members. This issue is seen only when the Network round-trip latency is more than 80ms. issue is seen on CEMR-10,CEMR-6 and MLMR-10 cards.

Create HW-LCAS ckt between  2 CEMR/MLMR cards.
Network round-trip latency between the end cards is more than 80ms. 
Inject any SONET defect on LCAS members. Clear SONET defect on LCAS members. 
Stuck DNU/Toggling DNU observed for  few members.
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