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NIC port seeing CRC errors in ifstat

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Category:
fas-systems
Specialty:
HW
Last Updated:

Applies to

  • FAS / AFF Systems
  • Networking Adapters

Issue

  • The output of the ifstat command shows high CRC errors on the affected port:

::> system node run -node <NODE_NAME> -command ifstat <PORT>

-- interface  e4a  (7 hours, 33 minutes, 13 seconds) --

RECEIVE
 Total frames:    10739k | Frames/second:     395  | Total bytes:     14537m
 Bytes/second:      534k | Total errors:     4921  | Errors/minute:      11 
 Total discards:      0  | Discards/minute:     0  | Multi/broadcast:   334k
 Non-primary u/c:     0  | CRC errors:       4921  | Runt frames:         0 
 Fragment:            0  | Long frames:         0  | Jabber:              0  

  • Following errors are reported in event logs:

[Node-02: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e4a on node Node-02 is reporting a high number of observed CRC errors.

  • IFCONFIG-VVVM may shows the SFP Rx power is lower than expect:

    e9a: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500

     media: Ethernet autoselect <rxpause,txpause> (25GBase-SR <full-duplex,rxpause,txpause>)
     status: active

     plugged: SFP/SFP+/SFP28 100GBASE-SR4 or 25GBASE-SR (LC)
     module temperature: 36.62 C voltage: 3.33 Volts
     lane 1: RX power: 0.08 mW (-11.10 dBm) TX bias: 8.02 mA


    e9a: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500

     media: Ethernet autoselect <rxpause,txpause> (25GBase-SR <full-duplex,rxpause,txpause>)
     status: active

     plugged: SFP/SFP+/SFP28 100GBASE-SR4 or 25GBASE-SR (LC)
     module temperature: 38.38 C voltage: 3.33 Volts
     lane 1: RX power: 0.26 mW (-5.86 dBm) TX bias: 8.02 mA

 

 

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