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CRC errors and illegal symbols on multiple Cluster Ports

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Category:
ontap-9
Specialty:
hw
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Applies to

  • ONTAP 9
  • Cluster Interconnect Switch
  • NVIDIA SN2100

Issue

  • Eight node cluster with High and persistent CRC errors on cluster port e1a/e0a of nodes Node-N07 and Node-N08 in an AFF-A800 cluster. 

-- interface  e0a  (15 days, 19 hours, 31 minutes, 54 seconds) --

RECEIVE
 Total frames:    13794m | Frames/second:   10096  | Total bytes:       103t
 Bytes/second:    75867k | Total errors:      172  | Errors/minute:       0
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:   993k
 Non-primary u/c:     0  | CRC errors:        172  | Long frames:         0

-- interface  e1a  (1 day, 19 hours, 42 minutes, 17 seconds) --

RECEIVE
 Total frames:      552m | Frames/second:    3510  | Total bytes:      3031g
 Bytes/second:    19267k | Total errors:    92325  | Errors/minute:      35
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:   114k
 Non-primary u/c:     0  | CRC errors:      92325  | Long frames:         0

  • Nodes Node-N01 to Node-N06 reporting high count of length errors and illegal symbols on e0b ports but no CRC errors.

-- interface  e0b  (46 days, 20 hours, 35 minutes, 21 seconds) --

RECEIVE
 Total frames:    12556m | Frames/second:    3101  | Total bytes:     11250g
 Bytes/second:     2778k | Total errors:       20  | Errors/minute:       0
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  2867k
 Non-primary u/c:     0  | CRC errors:          0  | Runt frames:         0
 Fragment:            0  | Long frames:         0  | Jabber:              3
 Length errors:      17  | No buffer:           0  | Xon:                 0
 Xoff:                0  | Pause:               0  | Jumbo:            1049m
 Noproto:             0  | Error symbol:    33881  | Illegal symbol:  33881

-- interface  e0b  (46 days, 20 hours, 58 minutes, 23 seconds) --

RECEIVE
 Total frames:     8894m | Frames/second:    2196  | Total bytes:      9360g
 Bytes/second:     2311k | Total errors:       13  | Errors/minute:       0
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  2870k
 Non-primary u/c:     0  | CRC errors:          0  | Runt frames:         0
 Fragment:            0  | Long frames:         0  | Jabber:              1
 Length errors:      12  | No buffer:           0  | Xon:                 0
 Xoff:                0  | Pause:               0  | Jumbo:             971m
 Noproto:             0  | Error symbol:    22612  | Illegal symbol:  22612

  • The errors were observed to increase daily, even after clearing interface statistics and toggling port admin states.

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