存在しないスイッチのシステムヘルスアラートでClusterSwitchConfig_Alertが報告される

環境

• ONTAP 9
• クラスタ スイッチ ヘルス モニタ（CSHM）AutoSupportメッセージ

問題

• スイッチのサブシステムヘルスが低下します。

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
IO         ok
MetroCluster    ok
MetroCluster_Node ok
FHM-Switch     ok
FHM-Bridge     ok
SAS-connect_Cluster ok

• EMSは、次のいずれかの健全性アラートを1つ以上報告します。
  [Node_01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchUnreachable_Alert , Alerting Resource = SW1(FOCXXXXXXXX) raised by monitor ethernet-switch
[Node_01: cshmd: hm.alert.raised:alert]: Alert Id = ClusterSwitchConfig_Alert , Alerting Resource = node_01 raised by monitor cluster-switch
[Node_01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchCommunityString_Alert , Alerting Resource = SW1 raised by monitor cluster-switch
[Node-01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchLinkDiscoveryProtocol_Alert , Alerting Resource = Switch-SW1 raised by monitor ethernet-switch
• system health alert showの出力も同様に、次のいずれかを1つ以上表示します。

        Node: node-01
      Alert ID: SwitchUnreachable_Alert
      Resource: sw1
   Probable Cause: The ethernet switch's IP address is not reachable from
           the local node.
   Possible Effect: Monitoring of the switch and log collection will not
           function.
Corrective Actions: Ensure that the IP address is reachable or specify the
           correct reachable IP address.

        Node: node-01
      Alert ID: ClusterSwitchConfig_Alert
      Resource: node-01
   Probable Cause: One or more nodes are not connected to both cluster
           switches.
   Possible Effect: If one cluster switch fails, "node0-1" might lose
           access to the cluster.
Corrective Actions: Ensure the switch "sw1" is connected
           to the node "node-01".

        Node: node-01
      Alert ID: SwitchCommunityString_Alert
      Resource: sw1
   Probable Cause: Cluster switch "sw1" with IP address
           "123.123.123.123" is not reachable via SNMP. Incorrect
                SNMP community string might be configured on the
                cluster switch.
   Possible Effect: Cluster switch communication problems and
           accessibility issues.
Corrective Actions: Check the SNMP community string on the cluster switch
           to verify the expected community string is configured.
                Use the "system cluster-switch show -snmp-config"
                command to view the expected community string.

 Node: Node-103B
      Alert ID: SwitchLinkDiscoveryProtocol_Alert
      Resource: Switch-SW2
      Severity: Minor
   Indication Time: Mon Aug 04 18:01:22 2025
      Suppress: false
 Acknowledge: false
   Probable Cause: The ethernet switch is using an unsupported link
           discovery protocol.
  Possible Effect: The change of the link discovery protocol on the
           switch is not supported. The connected device will not
           appear in link layer discovery commands.
 Corrective Actions: Revert the discovery protocol change on the switch.

• アラートのスイッチ名とIPアドレスは、いずれのクラスタスイッチにも属しておらず、またはスイッチレスクラスタの場合に報告されます。
• Command system switch ethernet show は空白または不明であるか、IP address not reachableを持つスイッチを報告します。
• ヘルスアラートを削除しても問題は解決しません。