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CRC errors received on a single NIC port solved with cable replacement

  1. Last updated
    May 14, 2025
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Category:
fas-systems
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hw
Last Updated:
5/14/2025, 3:42:53 AM

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Applies to

  • ONTAP 9
  • FAS / AFF Systems
  • CRC errors reporting on a single data port
  • Data port using SFP and optical cable

Issue

  • Event logs report hardware errors on a physical and/or logical port.

[node-01: vifmgr: vifmgr.cluscheck.crcerrors]: Port e0c on node node-01 is reporting a high number of observed hardware errors, possibly CRC errors
[node-02: vifmgr: vifmgr.cluscheck.crcerrors]: Port e0c on node node-02 is reporting a high number of observed hardware errors, possibly CRC errors
[node-02: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e0d on node node-02 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped)

  • ifstat output show CRC errors if ONTAP is receiving the errors.         
-- interface  e0c  (2 days, 13 hours, 18 minutes, 25 seconds) --

RECEIVE
 Total frames:    60297k | Frames/second:     273  | Total bytes:     21274m
 Bytes/second:    96393  | Total errors:     7137  | Errors/minute:       2
 Total discards:     31  | Discards/minute:     0  | Multi/broadcast:   539k
 Non-primary u/c:     0  | Errored frames:      0  | Unsupported Op:      0
 CRC errors:       7137  | Runt frames:         0  | Fragment:            0 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
 Long frames:         0  | Jabber:              0  | Length errors:       0
 Alignment errors:    0  | No buffer:           0  | Pause:               0
 Jumbo:            1175k | Error symbol:        0  | Bus overruns:       31
 Queue drops:         0  | LRO segments:    58643k | LRO bytes:       20784m
 LRO6 segments:       0  | LRO6 bytes:          0  | Bad UDP cksum:       0
 Bad UDP6 cksum:      0  | Bad TCP cksum:       0  | Bad TCP6 cksum:      0
 Mcast v6 solicit:    0  | Lagg errors:         0  | Lacp errors:         0
 Lacp PDU errors:     0
TRANSMIT
 Total frames:    58937k | Frames/second:     267  | Total bytes:     28577m
 Bytes/second:      129k | Total errors:        0  | Errors/minute:       0
 Total discards:      0  | Queue overflow:      0  | Multi/broadcast: 18595
 Collisions:          0  | Pause:               0  | Jumbo:            8869m
 Cfg Up to Downs:     2  | TSO segments:      607k | TSO bytes:       11359m
 TSO6 segments:       0  | TSO6 bytes:          0  | HW UDP cksums:   13037
 HW UDP6 cksums:      0  | HW TCP cksums:   57872k | HW TCP6 cksums:      0
 Mcast v6 solicit:    0  | Lagg drops:          0  | Lagg no buffer:      0
 Lagg no entries:     0
DEVICE
 Mcast addresses:     3  | Rx MBuf Sz:       9216
LINK INFO
 Speed:           40000M | Duplex:            full | Flowcontrol:       none
 Media state:     active | Up to downs:          1 | HW assist:         514k

 

 

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