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Cluster interconnect port show link down and up

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Applies to

  • AFF-A400
  • ONTAP 9.13.1P7
  • Switchless Cluster

Issue

  • Cluster port link down/up repeats from both cluster ports.

[NodeA: kernel: netif.linkDown:info]: Ethernet e3a: Link down, check cable.
[NodeA: kernel: netif.linkUp:info]: Ethernet e3a: Link up.

[NodeB: kernel: netif.linkDown:info]: Ethernet e3a: Link down, check cable.
[NodeB: kernel: netif.linkUp:info]: Ethernet e3a: Link up.

  • In the ifstat -a log, it shows [CRC errors: 0 ].

NodeA:
-- interface  e3a  (215 days, 11 hours, 43 minutes, 36 seconds) --

RECEIVE
 Total frames:     1404m | Frames/second:      75  | Total bytes:       400g
 Bytes/second:    21515  | Total errors:        0  | Errors/minute:       0
 Total discards:     11  | Discards/minute:     0  | Multi/broadcast:  1581k
 Non-primary u/c:     0  | Errored frames:      0  | Unsupported Op:      0
 CRC errors:          0  | Runt frames:         0  | Fragment:            0

NodeB:
-- interface  e3a  (214 days, 1 hour, 55 minutes, 39 seconds) --

RECEIVE
 Total frames:     1244m | Frames/second:      67  | Total bytes:      1456g
 Bytes/second:    78761  | Total errors:        0  | Errors/minute:       0
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  1556k
 Non-primary u/c:     0  | Errored frames:      0  | Unsupported Op:      0
 CRC errors:          0  | Runt frames:         0  | Fragment:            0

  • Occurrence frequency is low, only once or a few times.

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