Mediatorの接続ステータスがfalse

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環境

MetroCluster IP
ONTAP 9
ONTAPメディエーター

問題

Mediatorレポートの接続ステータス false:

例：

Local::*> metrocluster configuration-settings mediator show
 Mediator IP    Port   Node           Configuration Connection
                          Status     Status
 --------------- ------- ----------------------- ------------- -----------
 4.3.2.1
          31784   node_A_2         true      false
              node_A_1         true      false
              node_B_2         true      false
              node_B_1         true      false

EMSログには、レイテンシとiSCSIタイムアウトに関連するエラーも記録されます。

例：

Fri Sep 24 02:02:28 +0200 [Node-02: pha_main000: mlm.excessive.TPlatency:notice]: Average latency of 253169us on target port, has exceeded 250000us
 Fri Sep 24 02:03:13 +0200 [Node-02: kernel: iscsi.session.stateChanged:notice]: iSCSI session state is changed to Reconnecting for the target iqn.2012-05.local:mailbox.target.:1 (type: mailbox, address: 4.3.2.1). Reason: no ping reply after 5 seconds.
 Fri Sep 24 02:03:13 +0200 [Node-02: iscsid: iscsi.session.stateChanged:notice]: iSCSI session state is changed to Connected for the target iqn.2012-05.local:mailbox.target.:1 (type: mailbox, address: 4.3.2.1). 
 Fri Sep 24 02:04:49 +0200 [Node-02: wafl_exempt12: wafl.vol.snap_create.done:info]: params: {'vol': 'Node_02_root', 'app': '', 'volident': '', 'run_time': '222', 'owner': '', 'type': 'Aggregate'}