MCC IPクラスタスイッチ上のSwitchIfDead_Alert

環境

問題

• EMSログで次のメッセージを受信

[Node-01: cshmd: hm.alert.raised:alert]: Alert Id = SwitchIfDead_Alert , Alerting Resource = Switch-01(XXXXXXXXXXXX)/Ethernet0/55 raised by monitor ethernet-switch

• 次のエラーを含むシステムヘルスアラートが報告されました

Cluster::>  system health alert show
        Node: Node-01
      Alert ID: SwitchIfDead_Alert
      Resource: Slot: 0 Port: 55 100G - Level
      Severity: Major
   Indication Time: Mon Jul 14 14:25:11 2025
      Suppress: false
     Acknowledge: false
   Probable Cause: The interface Switch-01/Slot: 0 Port: 55
           100G - Level is up, but it is not passing unicast
               traffic.
   Possible Effect: The lack of transmit or receive traffic reported by
           the switch can indicate issues with port-level or
           switch-level data packet forwarding.
 Corrective Actions: 1) Check interface counters and neighbor discovery information to verify the port's activity.
           2) Check cluster and switch health status.