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Incorrect "ifstat" values are displayed for the Transmit-Total errors counter for a CNA card

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Category:
ontap-9
Specialty:
nas
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Applies to

  • ONTAP 9.2P4
  • QLogic Converged Network Adapter (CNA) 8324

Issue

  • Event logs reports the following errors

Example:

4/18/2019 11:35:16  FAS2620_0125     ALERT         vifmgr.cluscheck.crcerrors: Port e0c on node FAS2620_0125 is reporting a high number of observed hardware errors, possibly CRC errors.
 4/18/2019 10:31:05  FAS2620_0126     ALERT         vifmgr.cluscheck.crcerrors: Port e0c on node FAS2620_0126 is reporting a high number of observed hardware errors, possibly CRC errors.
 4/18/2019 10:30:16  FAS2620_0125     ALERT         vifmgr.cluscheck.crcerrors: Port e0c on node FAS2620_0125 is reporting a high number of observed hardware errors, possibly CRC errors.
 4/18/2019 09:26:05  FAS2620_0126     ALERT         vifmgr.cluscheck.crcerrors: Port e0c on node FAS2620_0126 is reporting a high number of observed hardware errors, possibly CRC errors.

  • The"ifstat -a"shows high Transmit-Total errors counter

Example:

-- interface  e0c  (260 days, 7 hours, 2 minutes, 13 seconds) --

RECEIVE
 Total frames:    28041m | Frames/second:    1247  | Total bytes:     31031g
 Bytes/second:     1379k | Total errors:        0  | Errors/minute:       0 
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:   254m
 Non-primary u/c: 27985m | CRC errors:          0  | Runt frames:         0 
 Fragment:            0  | Long frames:         0  | Jabber:              0 
 Alignment errors:    0  | No buffer:           0  | Xon:                 0 
 Xoff:                0  | Jumbo:               0  | Noproto:             0 
 Error symbol:        0  | Illegal symbol:      0  | Bus overruns:        0 
 LRO segments:    18989m | LRO bytes:       30180g | 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 
TRANSMIT
 Total frames:    16313m | Frames/second:     725  | Total bytes:         0 
 Bytes/second:        0  | Total errors:    38007m | Errors/minute:     101k
 Multi/broadcast:   788k | Max collisions:      0  | Single collision:    0 
 Multi collisions:    0  | Late collisions:     0  | Xon:                 0 
 Xoff:                0  | Jumbo:               0  | Cfg Up to Downs:     0 
 TSO non-TCP drop:    0  | Split hdr drop:      0  | Timeout:             0 
 TSO segments:     5957m | TSO bytes:       39976g | TSO6 segments:       0 
 TSO6 bytes:          0  | HW UDP cksums:       0  | HW UDP6 cksums:      0 
 HW TCP cksums:       0  | HW TCP6 cksums:      0  | Mcast v6 solicit:    0 

 

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