ClusterSwitchConnectionDegraded_Alert は、冗長スイッチエントリが欠落しているために発生しました

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環境

ONTAP 9
Event Messaging System（EMS）
クラスタスイッチ

問題

EMS が「ClusterSwitchConnectionDegraded_Alert」を報告する

Fri Dec 20 19:11:41 +0100 [CLUSTER-01: cshmd: hm.alert.raised:alert]: Alert Id = ClusterSwitchConnectionDegraded_Alert , Alerting Resource = CLUSTER-01 raised by monitor ethernet-switch

同じアラートはシステムヘルスアラートでも確認できます。

Cluster::*> system health alert show Node: node Alert ID: ClusterSwitchConnectionDegraded_Alert Resource: node Severity: Major Indication Time: Thu Mar 06 15:03:16 2025 Suppress: false Acknowledge: false Probable Cause: Only one cluster switch, "switch", has been discovered to be connected to the cluster ports of node "node". If a cluster connection was not discovered, but the expected cluster switch is listed in the output of "system switch ethernet show", it indicates that the node is not currently receiving discovery information about the missing switches.

しかし、デバイス検出から、両方のスイッチが認識されることがわかりました。

Cluster::> network device-discovery show

Node/     Local Discovered
Protocol   Port Device           Interface      Platform
----------- ------ ------------------------- ---------------- ----------------
Cluster-N1/cdp
       e0a   ClusterSW1(XXXXXXX)
                       Ethernet1/10 N9K-C9336C-FX2
       e0b   ClusterSW2(YYYYYYY)
                       Ethernet1/11 N9K-C9336C-FX2
Cluster-N1/cdp
       e0a   ClusterSW1(XXXXXXX)
                       Ethernet1/10 N9K-C9336C-FX2
       e0b   ClusterSW2(YYYYYYY)
                       Ethernet1/11 N9K-C9336C-FX2

system switch ethernet showコマンドでは、1つのスイッチのエントリしか確認できませんでした。

Cluster::*> system switch ethernet show -instance

                  Device Name: ClusterSW2
                   IP Address: 192.xx.x.9
                  SNMP Version: SNMPv2c
                 Is Discovered: true
      Community String or SNMPv3 Username: cshm1!
                  Model Number: N9K-C9336C-FX2
                 Switch Network: cluster-network
                Software Version: Cisco Nexus Operating System (NX-OS) Software, Version 10.3(4a)
           Reason For Not Monitoring: Monitoring disabled by user
            Source Of Switch Version: CDP/ISDP
                 Is Monitored ?: false
          Serial Number of the Device: unknown