CRCs on all data ports except one
Applies to
- ONTAP 9
- Data Ports
- Data Switches
Issue
- CRC errors seen in IFSTAT -A for multiple data ports:
-- interface e4b (1 day, 10 hours, 2 minutes, 12 seconds) --
RECEIVE
Total frames: 130k | Frames/second: 1 | Total bytes: 14931k
Bytes/second: 122 | Total errors: 122 | Errors/minute: 0
Total discards: 0 | Discards/minute: 0 | Multi/broadcast: 50163
Non-primary u/c: 0 | CRC errors: 122 | Runt frames: 0
Fragment: 0 | Long frames: 0 | Jabber: 0
Length errors: 3 | No buffer: 0 | Xon: 0
Xoff: 0 | Pause: 0 | Jumbo: 0
Noproto: 0 | Error symbol: 0 | Illegal symbol: 0- EMS messages seen for multiple ports:
vifmgr.cluscheck.hwerrors:alert]: Port e3b on node-4 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped) vifmgr.cluscheck.hwerrors:alert]: Port e4b on node-3 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped) vifmgr.cluscheck.hwerrors:alert]: Port e3b on node-3 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped)
- The ports all connect to the same pair of data switches.
- No switch configuration issues.
- One data port to the switches has no CRC errors:
-- interface e4b (1 day, 10 hours, 2 minutes, 43 seconds) --
RECEIVE
Total frames: 130k | Frames/second: 1 | Total bytes: 14931k
Bytes/second: 122 | Total errors: 0 | Errors/minute: 0
Total discards: 0 | Discards/minute: 0 | Multi/broadcast: 50175
Non-primary u/c: 0 | CRC errors: 0 | Runt frames: 0
Fragment: 0 | Long frames: 0 | Jabber: 0
Length errors: 0 | No buffer: 0 | Xon: 0
Xoff: 0 | Pause: 0 | Jumbo: 0
Noproto: 0 | Error symbol: 0 | Illegal symbol: 0
- Switch port connection to the port with no CRCs shows Rx errors, all other switch ports report no errors:
RX 6047670413 unicast packets 1753545 multicast packets 1168987 broadcast packets 6050606416 input packets 3702165555876 bytes 0 jumbo packets 0 storm suppression packets 45 runts 0 giants 13383 CRC 0 no buffer 13438 input error 0 short frame 0 overrun 0 underrun 0 ignored