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CRC error on Cluster Ports due to Port errors on Cluster Switch

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Category:
fabric-interconnect-and-management-switches
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nas
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Applies to

  • ONTAP 9
  • Cisco Cluster Interconnect Switch

Issue

  • In the EMS-LOG-FILE section of the AutoSupport, the port on node connected to the switch reports CRC errors
Thu Nov 04 02:30:48 +0100 [Node1: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e0a on node Node1 is reporting a high number of observed hardware errors, possibly CRC errors
  • From IFSTAT output :-
    -- interface  e2a  (54 days, 7 hours, 16 minutes, 50 seconds) --
    
    connected to bond-sw-02(FDO26020KJB) port Ethernet1/10
    
    RECEIVE
    Total frames:     7264m | Frames/second:    1548  | Total bytes:     20720g
    Bytes/second:     4416k | Total errors:     1437  | Errors/minute:       0
     Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  9402k
    Non-primary u/c:     0  | CRC errors:       1427  | Runt frames:         0
     Fragment:            0  | Long frames:         0  | Jabber:              2
     Length errors:       0  | No buffer:           0  | Xon:                 0
     Xoff:                0  | Pause:               0  | Jumbo:            2327m
    Noproto:             0  | Error symbol:        0  | Illegal symbol:      8
     Bus overruns:        0  | Queue drops:         0  | LRO segments:     5374m
    LRO bytes:       20524g | 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  | Lagg errors:         0
     Lacp errors:         0  | Lacp PDU errors:     0
    
    
    Node-15
    
    -- interface  e1a  (54 days, 5 hours, 2 minutes, 29 seconds) --
    
    connected to bond-sw-02(FDO26020KJB) port Ethernet1/1/1
    
    
    RECEIVE
    Total frames:     4798m | Frames/second:    1025  | Total bytes:     26784g
    Bytes/second:     5718k | Total errors:    31463  | Errors/minute:       0
     Total discards:      0  | Discards/minute:     0  | Multi/broadcast:  9009k
    Non-primary u/c:     0  | CRC errors:      31213  | Runt frames:         0
     Fragment:            0  | Long frames:       250  | Jabber:              0
     Length errors:       0  | No buffer:           0  | Xon:                 0
     Xoff:                0  | Pause:               0  | Jumbo:            3213m
    Noproto:             0  | Error symbol:        0  | Illegal symbol:      0
     Bus overruns:        0  | Queue drops:         0  | LRO segments:     2383m
    LRO bytes:       26564g | 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  | Lagg errors:         0
     Lacp errors:         0  | Lacp PDU
    
  • From the switch end, the high number of Input/Output errors were observed, output from show tech-support:
Ethernet1/4/1 is up
admin state is up, Dedicated Interface
  Hardware: 10000 Ethernet, address: cc90.70ee.774c (bia cc90.70ee.774c)
  MTU 1500 bytes, BW 10000000 Kbit , DLY 10 usec
  RX
    3908787286 unicast packets  103884 multicast packets  75257 broadcast packets
    3909318114 input packets  3409382136056 bytes
    351690 jumbo packets  0 storm suppression bytes
    0 runts  351686 giants  1 CRC  0 no buffer
    351687 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    9604947077 unicast packets  1454349 multicast packets  3536215 broadcast packets
    9610809120 output packets  10785052005849 bytes
    872003 jumbo packets
    871479 output error  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble  10093176 output discard
    0 Tx pause

Ethernet1/4/2 is up
admin state is up, Dedicated Interface
  Hardware: 10000 Ethernet, address: cc90.70ee.774d (bia cc90.70ee.774d)
  MTU 1500 bytes, BW 10000000 Kbit , DLY 10 usec
  RX
    3521803990 unicast packets  103884 multicast packets  75154 broadcast packets
    3522485765 input packets  2984871566565 bytes
    510507 jumbo packets  0 storm suppression bytes
    0 runts  502737 giants  0 CRC  0 no buffer
    502737 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    8123951053 unicast packets  1454350 multicast packets  3536320 broadcast packets
    8130520023 output packets  8924134848266 bytes
    1579516 jumbo packets
    1578300 output error  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble  4487495 output discard
    0 Tx pause

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