SP/BMC にエラーでアクセスできません：Unable to update SP network information at this time

環境

• FAS/AFF
• ONTAP 9
• ベースボード管理コントローラ（BMC）
• サービス プロセッサ（SP）

問題

• SSH 経由で SP/BMC にアクセスできません。
• SP/BMC の IP アドレスに ping を送信できません。
• イベントログには、以下のイベントが記録されます：

splog.warnings: Could not retrieve logs from the SP for 24 hours: splogd is running in degraded mode and having difficulty getting splogs from the SP FW

[Node-1: rlm_hbtrcv_non_blocking: spmgmt.driver.timeout:error]: The software driver for the Service Processor (SP) detected a problem: Unable to update SP network information at this time.

[cluster_node0: servprocd: splog.sp.not.accessible:error]: The SP on the remote node (cluster_node1) is not accessible because of The Service Processor on node "cluster_node1" is not reachable. Verify that the SP or BMC is online, verify that api-service is enabled on the SP or BMC, verify that the partner node is running, check if pings from SP or BMC to partner node work, check if hw-assist keep-alives are normal, check that network ports are configured correctly and are functional (up). Then, try the command again..

• BMC または SP としてマークされたsysconfig -a の出力 unknown：

    Service Processor        Status: Online
        Firmware Version:   11.5
        Mgmt MAC Address:   xx:xx:xx:xx:xx:xx
        Ethernet Link:      unknown, full duplex, auto-neg complete
        Using DHCP:         no
        IPv4 configuration:
        IP Address:         unknown
        Netmask:            unknown
        Gateway:            unknown

• ENVIRONMENT  ASUP ログにセンサー不明エラーが報告されています：

Shelf temperatures by element:

  [11] Unavailable

  [12] Unavailable