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CRC errors leading to adapter hanging on QLogic CNA 8324

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aff-series
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hw
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Applies to

  • QLogic CNA 8324
  • Cisco Nexus 9372PX Switch
    • NX-OS version 7.0(3)I7(9)
  • Ethernet flow control

Issue

  • CNA adapters connected to Nexus switch receive a high amount of CRC errors
  • CNA firmware becomes overwhelmed and hangs
  • Ports are no longer passing traffic
  • Ethernet flow control is in use
-- interface  e0g  (3 days, 9 hours, 22 minutes, 14 seconds) --

RECEIVE
 Total frames:      818m | Frames/second:    2794  | Total bytes:      1390g
 Bytes/second:     4748k | Total errors:      877  | Errors/minute:       0 
 Total discards:    297  | Discards/minute:     0  | Multi/broadcast: 19080k
 Non-primary u/c:     0  | CRC errors:        870  | Runt frames:         0 
 Long frames:         7  | Length errors:     452  | Alignment errors:    0 
 No buffer:         297  | Pause:               0  | Jumbo:             144m
 Noproto:             0  | Bus overruns:        0  | LRO segments:    38092m
 LRO bytes:        1267g | 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 
TRANSMIT
 Total frames:      699m | Frames/second:    2389  | Total bytes:     49048m
 Bytes/second:      167k | Total errors:        0  | Errors/minute:       0 
 Total discards:      0  | Queue overflow:      0  | Multi/broadcast: 15065 
 Pause:             412  | Jumbo:            1177m | Cfg Up to Downs:     0 
 TSO segments:      425m | TSO bytes:        4877g | TSO6 segments:       0 
 TSO6 bytes:          0  | HW UDP cksums:    1146  | HW UDP6 cksums:      0 
 HW TCP cksums:     699m | HW TCP6 cksums:      0  | Mcast v6 solicit:    0 
 Lagg drops:          0  | Lagg no buffer:      0  | Lagg no entries:     0 
DEVICE
 Mcast addresses:     3  | Rx MBuf Sz:       4096 
LINK INFO
 Speed:           10000M | Duplex:            full | Flowcontrol:       full
 Media state:     active | Up to downs:         26
  • Output errors are visible on switch ports connected to CNA adapters
Ethernet1/7 is up
admin state is up, Dedicated Interface
  Hardware: 1000/10000 Ethernet, address: 64f6.9def.2f78 (bia 64f6.9def.2f78)
  Description: leeds_cluster-03_e0g
  MTU 9000 bytes, BW 10000000 Kbit, DLY 10 usec
  [...]
  RX
    157979190732 unicast packets  729337 multicast packets  50257 broadcast packets
    157979970326 input packets  327012079355616 bytes
    50432168374 jumbo packets  0 storm suppression packets
    0 runts  0 giants  0 CRC  0 no buffer
    0 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
    175994 Rx pause
  TX
    169609915193 unicast packets  439329493 multicast packets  397732360 broadcast packets
    170446977046 output packets  206037673794876 bytes
    24585796553 jumbo packets
    101829 output error  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble  27974 output discard
    0 Tx pause
  • No other switch ports present CRC or other input errors

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