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BES-53248 ISL down when upgrading to EFOS 3.7.0.4 or later

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Applies to

  • BES-53248
  • EFOS to 3.7.0.4 and later

Issue

  • Upgrading EFOS to 3.7.0.4 or later version SwitchIfIslDownWarn_Alert in both Cluster Network Switches
  • Inter-Switch Links (ISLs) and port channel marked as Down, after upgrading one BES-53248 Cluster Network Switch to EFOS 3.7.0.4 or later
# show port-channel all
Log.    Channel                     Admin       Mbr     Device/       Port Port
Intf    Name            Min  Link   Mode   Type Ports   Timeout       Speed     Active
------- --------------- ---- ------ ------ ---- ------- ------------- --------- -------
1/1     Cluster-ISL     1    Down   En.    Dyn. 0/55    actor/long    100G Full False
                                                        partner/long
                                                0/56    actor/long    100G Full False
                                                        partner/long

# show port all

                 Admin     Physical   Physical   Link   Link    LACP   Actor
Intf      Type   Mode      Mode       Status     Status Trap    Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/1              Enable    10G Full   10G Full   Up     Enable  Enable long
0/2              Enable    10G Full   10G Full   Up     Enable  Enable long
0/3              Enable    10G Full   10G Full   Up     Enable  Enable long
0/4              Enable    10G Full   10G Full   Up     Enable  Enable long
....
0/55      PC Mbr Enable    100G Full             Down   Enable  Enable long
0/56      PC Mbr Enable    100G Full             Down   Enable  Enable long

  • AutoSupport generates alerts reporting switch ISLs are down, similar to:

HA Group Notification (Health Monitor process cshm: SwitchIfIslDownWarn_Alert[SW1/Slot: 0 Port: 55 100G - Level]) ALERT

HA Group Notification (Health Monitor process cshm: SwitchIfIslDownWarn_Alert[SW2/ Link Aggregate 1]) ALERT

  • If cluster LIFs are manually reverted to home ports with cluster interconnect ISLs down, node on which cluster LIFs were reverted has outage (LIFs and volumes on this node will not serve data) and its cluster apps go offline on that node

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