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CRC Errors seen on data ports after a head upgrade

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ontap-9
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Applies to

  • AFF systems
  • FAS systems
  • Head Upgrade (aka headswap)
  • CRC Errors on Data ports
  • ONTAP 9

Issue

  • After head upgrade incremental CRC Errors are shown on Network Interface Card (NIC) RECEIVE of ifstat:
 

::>node run -node node_name ifstat  

-- interface e5a (1 day, 2 hours, 8 minutes, 13 seconds) --
RECEIVE
Total frames: 1204m | Frames/second: 12804 | Total bytes: 2921g
Bytes/second: 31043k | Total errors: 1012 | Errors/minute: 1
Total discards: 8927k | Discards/minute: 5693 | Multi/broadcast: 147k
Non-primary u/c: 0 | CRC errors: 780 | Long frames: 1
-- interface e5b (1 day, 2 hours, 8 minutes, 10 seconds) --

RECEIVE
Total frames: 1609m | Frames/second: 17101 | Total bytes: 3317g
Bytes/second: 35263k | Total errors: 965 | Errors/minute: 1
Total discards: 0 | Discards/minute: 0 | Multi/broadcast: 187k
Non-primary u/c: 0 | CRC errors: 832 | Long frames: 0
  • Reviewed Switch logs and determined no CRC errors seen
  • All Hardware (cabling, SFP ) were checked

 

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