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After switch reboot ClusterIfIslDownWarn_Alert is seen

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ontap-9
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hw
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Applies to

  • ONTAP 9
  • Cisco N9K-C9336C-FX2 cluster switch

Issue

  • Switch rebooted after a power outage or maintenance.
  • You may see this ASUP alert:
HA Group Notification (Health Monitor process cshm: ClusterIfIslDownWarn_Alert[Switch_1(XXXXXXXXXXX)/Ethernet1/35]) ALERT
  • The switch health shows degraded:
cluster1::> system health subsystem show
Subsystem         Health
----------------- ------------------
SAS-connect       ok
Environment       ok
Memory            ok
Service-Processor ok
Switch-Health     degraded
CIFS-NDO          ok
Motherboard       ok
  • In event logs:
Thu Apr 10 18:51:19 -0600 [Node_2: cshmd: hm.alert.raised:alert]: Alert Id = ClusterIfIslDownWarn_Alert , Alerting Resource = Switch_1(XXXXXXXXXXX)/Ethernet1/36 raised by monitor ethernet-switch
Thu Apr 10 18:53:45 -0600 [Node_2: mgwd: callhome.hm.alert.major:alert]: Call home for Health Monitor process cshm: ClusterIfIslDownWarn_Alert[Switch_1(XXXXXXXXXXX)/Ethernet1/35].
 
  • The ISL ports come back online on their own.

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