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Cisco Bug: CSCum93509 - DDF FPGA false CRC errors detected

Last Modified

May 08, 2020

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.0 14.0(400) 14.1(10) 15.0(16) 15.0(911) 15.0(927) 16.0(500)

Description (partial)

DPC migration caused by falsely detected DDF CRC errors.  

Error signature: "DF0 Program CRC error".

Under normal operation DDF FPGA on DPC can falsely detect CRC errors causing a DPC switchover.
Also DPC can really detect CRC errors. In both cases RMA won't fix the issue because  this is not a hardware failure. In case of false positive moving to newer MDF/DDF FPGA helps. In case of real CRC errors the card need to be rebooted.

Refer to following wiki link to know about single event update is causing CRC errors.
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