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Cisco Bug: CSCvt67180 - N3K-C34200YC: CRC seen on 25g AOC links with portflap script/peer reload

Last Modified

Apr 20, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.3(3.76)

Description (partial)

Symptom:
CRC errors  on ports having SFP28 AOC cables.

Conditions:
CRC errors are seen when the peer switch goes for a reload on SFP28 AOC cables
N3K-C34200YC-SM has passed the reload tests consisting of 100 reload test multiple times.but in one iteration issue is seen.

CRC errors are seen when port flap script is run which will flap all the ports  in a switch with range.
N3K-C34200YC-SM passed port flap scripts multiple. But CRC  is seen once on 77th iteration of port flap script.

Reproduction of this issue is very difficult and seen very rare.
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Bug Details Include

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