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Post Ontap Upgrade cluster identifies node as a switch

Last Updated:

Applies to

  • ONTAP 9.11P3
  • Switchless Cluster
  • AFF & FAS Systems


  • After ONTAP Upgrade to 9.11.1P3, Switch Missing Alerts are constantly populating and CSHM (cluster switch health monitor) is acknowledging a Node IP as switch prior to giveback.
  • SwitchCommunityString_Alert is seen:
Cluster::> system health alert show
              Node: node_name
          Alert ID: SwitchCommunityString_Alert
          Severity: Major
    Probable Cause: Ethernet switch "node-01" with IP address
        "X.X.X.X" is not reachable via SNMP. Incorrect
        SNMP community string might be configured on the
        Ethernet switch.
   Possible Effect: Ethernet switch communication problems and
        accessibility issues.
Corrective Actions: Check the SNMP community string on the Ethernet switch
        to verify that the expected community string is
        configured. Use the "system switch ethernet show
        -snmp-config" command to view the expected community
Cluster1::> system health subsystem show
        Subsystem         Health
SAS-connect        ok
Environment        ok
Memory             ok
Service-Processor  ok
Switch-Health      degraded
  • The switch is then discovered as a management-network switch through CDP/ISDP (Cisco Discovery Protocol/Industry Standard Discovery Protocol):
Cluster1::>system switch ethernet show Switch                        Type                                   Address          Model ----------------------------------------------------------------------------------------  management-network     10.x.x.1          OTHER                      Serial Number: Unknown                       Is Monitored: false
                            Reason: MonitoringDisabled by Default
                  Software Version: Cisco Nexus OperatingSystem (NX-OS) Software, Version 14.2                     Version Source: CDP/ISDP



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