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CRC errors observed on multiple nodes of the cluster

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aff-series
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hw
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Applies to

  • AFF-A700
  • ONTAP 9.1P12

Issue

  • CRC errors are visible for several ports across multiple nodes in the cluster
  • The ratio of logged CRC errors to good frames shown in ifstat is negligible

Example:

-- interface e1c (78 days, 17 hours, 3 minutes, 56 seconds) --

RECEIVE

Frames/second: 0 | Bytes/second: 0 | Errors/minute: 0

Discards/minute: 0 | Total frames: 64062k | Total bytes: 5604m

Total errors: 9 | Total discards: 376 | Multi/broadcast: 0

No buffers: 0 | Non-primary u/c: 0 | L2 terminate: 5751

Tag drop: 0 | Vlan tag drop: 0 | Vlan untag drop: 0

Vlan forwards: 0 | CRC errors: 9 | Alignment errors: 0

Runt frames: 0 | Long frames: 0 | IP checksum erro: 0

Frame Dropped: 376 | Pause frame: 0

64 million received frames compared to 376 discarded and 9 CRCs.

-- interface e2a (18 days, 14 hours, 55 minutes, 17 seconds) --

RECEIVE

Frames/second: 6009 | Bytes/second: 7514k | Errors/minute: 0

Discards/minute: 0 | Total frames: 8616m | Total bytes: 23332g

Total errors: 210 | Total discards: 349 | Multi/broadcast: 0

No buffers: 0 | Non-primary u/c: 0 | L2 terminate: 0

Tag drop: 0 | Vlan tag drop: 0 | Vlan untag drop: 0

Vlan forwards: 0 | CRC errors: 21 | Alignment errors: 0

Runt frames: 0 | Long frames: 0 | IP checksum erro: 0

Frame Dropped: 349 | Pause frame: 0

8 billion received frames compared to 349 discarded and 21 CRCs.

  • The system is operating normally, with no latency or other issues observed
  • The CRC error counters only increase by a small amount or not at all
  • There are no warning messages being reported by ONTAP

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