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CONTAP-86456: "vifmgr.cluscheck.hwerrors" event triggered on interface group ports during high traffic

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Issue

  • EMS event"vifmgr.cluscheck.hwerrors" may be generated for interface group network ports during times of high traffic.

Example:
[Node-01: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port a0a on node Node-01 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).
[Node-01: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port a0a-114 on node Node-01 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped)
Or
[Node-01: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port a1m on node Node-01 is reporting a high number of observed hardware errors, possibly CRC errors.
[Node-01: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port a1m-3006 on node Node-01 is reporting a high number of observed hardware errors, possibly CRC errors.
  • Only IFGRP TRANSMIT Total errors values increase, physical port in IFGRP shows no errors
    • interface  a0a (2 days, 19 hours, 15 minutes, 16 seconds) --

RECEIVE
[...]
TRANSMIT
Total frames:    72934k | Frames/second:     267  | Total bytes:       410g
Bytes/second:     1503k | Total errors:    48441  | Errors/minute:      11
[...]
Note: Currently 48441 Total errors were counted. Compare with later date/time.
  • interface  a0a (3 days, 3 hours, 47 minutes, 23 seconds) --

RECEIVE
[...]
TRANSMIT
Total frames:    72934k | Frames/second:     267  | Total bytes:       410g
Bytes/second:     1503k | Total errors:    52183  | Errors/minute:      11
[...]
Note: Total errors is increased. Any ifstats counter has to be compared to an earlier date/time to confirm increase.

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