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CRC on the MetroCluster IP switches

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Applies to

  • ONTAP 9.x
  • MetroCluster IP
  • MetroCluster IP switches

Issue

  • CRC errors on switch ISL port.
  • Excessive network errors like the ones below reported in the event log:
    • [node032: kernel: iscsi.session.stateChanged:notice]: iSCSI session state is changed to Reconnecting ...

    • [node032: ERROR scsi.cmd.abortedByHost: Disk device 0m.i1.3L29: Command aborted by host adapter: HA status 0x13: cdb 0x2f:17d99000:0400.

    • [node031: doneq0: scsi.mcc.adt.ioTransportError:error]: mcc_adt[6] - Transport error during execution of command ...
    • [node032: vifmgr: vifmgr.cluscheck.crcerrors:alert]: Port e0a on node node032 is reporting a high number of observed hardware errors, possibly CRC errors.
    • [node032: vifmgr: callhome.clus.net.degraded:alert]: Call home for CLUSTER NETWORK DEGRADED: CRC Errors Detected - High CRC errors detected on port e0a node node032

 

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