両方のHAノードでのvifmgr.portdownアラート

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環境

AFF A400
ONTAP 9

問題

両方の HA ノードのe0fポートから同時にvifmgr.portdownアラートが送信されます。

#02 notificationTrap <DC=[alert-server] HOST=[node-01.company.com.local] IPADDRESS=[10.123.45.12] TAG_Resource=[95bxxxxxxxxxxxxxxxxxxxxxxxxxxx22] xSLAkey=[notificationTrap] TAG_Ifdesc=[]>
[ productTrapData.0 = vifmgr.portdown:A link down event was received on node node-01, port e0f. productSerialNum.0 = 1-80-000011, [DC=alert-server]]

#02 notificationTrap <DC=[alert-server] HOST=[node-02.company.com.local] IPADDRESS=[10.123.45.13] TAG_Resource=[827xxxxxxxxxxxxxxxxxxxxxxxxxxxea] xSLAkey=[notificationTrap] TAG_Ifdesc=[]>
[ productTrapData.0 = vifmgr.portdown:A link down event was received on node node-02, port e0f. productSerialNum.0 = 1-80-000011, [DC=alert-server]]

EMS logsによると、2025/11/29 23:00:12に、両方のHAノード（node-01とnode-02）でポートe0fの同時リンクダウンイベントが発生し、ポートは2025/11/30 00:57に回復しました。

ノード01：

Sat Nov 29 23:00:12 +0000 [node-01: kernel: netif.linkDown:info]: Ethernet e0f: Link down, check cable.
Sat Nov 29 23:00:12 +0000 [node-01: intr: net.ifgrp.lacp.link.inactive:error]: ifgrp a0b, port e0f has transitioned to an inactive state. The interface group is in a degraded state.
Sat Nov 29 23:00:12 +0000 [node-01: vifmgr: vifmgr.portdown:notice]: A link down event was received on node node-01, port e0f.

Sun Nov 30 00:56:14 +0000 [node-01: kernel: netif.linkUp:info]: Ethernet e0f: Link up.
Sun Nov 30 00:56:14 +0000 [node-01: vifmgr: vifmgr.portup:notice]: A link up event was received on node node-01, port e0f.
Sun Nov 30 00:57:18 +0000 [node-01: intr: net.ifgrp.lacp.link.active:notice]: ifgrp a0b, port e0f has transitioned to the active state.
Sun Nov 30 00:57:24 +0000 [node-01: vifmgr: vifmgr.reach.unassn:notice]: Network port e0f on node node-01 is not assigned to any broadcast domain. No broadcast domains appear to be reachable from this port.

node-02：

Sat Nov 29 23:00:12 +0000 [node-02: kernel: netif.linkDown:info]: Ethernet e0f: Link down, check cable.
Sat Nov 29 23:00:12 +0000 [node-02: intr: net.ifgrp.lacp.link.inactive:error]: ifgrp a0b, port e0f has transitioned to an inactive state. The interface group is in a degraded state.
Sat Nov 29 23:00:12 +0000 [node-02: vifmgr: vifmgr.portdown:notice]: A link down event was received on node node-02, port e0f.

Sun Nov 30 00:56:14 +0000 [node-02: kernel: netif.linkUp:info]: Ethernet e0f: Link up.
Sun Nov 30 00:56:14 +0000 [node-02: vifmgr: vifmgr.portup:notice]: A link up event was received on node node-02, port e0f.
Sun Nov 30 00:57:19 +0000 [node-02: intr: net.ifgrp.lacp.link.active:notice]: ifgrp a0b, port e0f has transitioned to the active state.
Sun Nov 30 00:57:28 +0000 [node-02: vifmgr: vifmgr.reach.unassn:notice]: Network port e0f on node node-02 is not assigned to any broadcast domain. No broadcast domains appear to be reachable from this port.

インターフェースグループ ifgrpa0bは、物理ポートe0fおよびe0hを使用して設定されています。
リンクアップイベント後、状態は degradedからactive に予想どおりに遷移します。
IFSTAT-A出力は、ポートe0fでエラーやパケットドロップがないことを示しています。
DEVICE-DISCOVERY.XML両方のHAノードのe0fポートが同じスイッチに接続されていることを確認します。