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Cluster outage during BES-53248 cluster interconnect switch upgrade

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fabric-interconnect-and-management-switches
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HW
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Applies to

  • ONTAP 9
  • BES-53248 cluster interconnect switch

Issue

  • During upgrade of EFOS firmware on BES-53248 switch, after reload on new version, interfaces connected to storage are down:
Admin     Physical   Physical   Link   Link    LACP   Actor
Intf      Type   Mode      Mode       Status     Status Trap    Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/1              Enable    10G Full              Down   Enable  Enable long
0/2              Enable    10G Full              Down   Enable  Enable long
  • If not noticed and second switch upgraded with same issue, cluster has outage with all cluster applications offline (seen via advanced command cluster ring show).
  • Aggregates go to unknown status and NAS data (NFS and CIFS) stops being served.
  • There are no obvious errors in show logging buffered from switch logs, nor from EMS on storage.

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