BMC firmware upgrade fails with "SP IP address not available"

• ONTAP 9
• FAS/AFF/ASA
• SP(Service Processor)/BMC (Baseboard Management Controller) firmware upgrade

• A planned SP/BMC firmware upgrade failed on Node-n2 with the following error: 

Cluster::*> system service-processor image update -node node-n2
Note: Firmware update will need to reboot the SP on completion. If your console connection is through the SP, it will be disconnected
Do you want to proceed with the firmware update ? {y|n}: y
Error: command failed: Pre-update Check failed: SP IP address not available.

Cluster::> sp show
                             IP           Firmware
Node          Type Status      Configured   Version   IP Address
------------- ---- ----------- ------------ --------- -------------------------
node-n1  BMC  online      true         19.3      100.xx.xxx.38
node-n2  BMC  online      true         19.2      100.xx.xxx.40     
2 entries were displayed.

• The SP-MGMT-MLOG-TXT.GZ reports failed to list sensor info from the BMC:

Mon Jun 01 2026 00:38:33 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: NOTICE: Servprocd::SpUpdate: SpUpdateStateHandleEvent: New SP firmware package is locally available, SP auto-update has not been triggered.
 Mon Jun 01 2026 00:38:33 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: NOTICE: Servprocd::SpUpdate: SpUpdateReport: New SP package 19.3 is available on local node.
Mon Jun 01 2026 00:48:04 +09:00 [kern_servprocd:info:70645] 0x80b2f4000: 0: NOTICE: Servprocd::BmcManager: perform_sync(): Check and perform BMC NW sync if necessary. 012713b3 Mon Jun 01 2026 00:58:49 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: INFO: Servprocd::SpUpdate: IsSpUpdateNecessary: New SP Firmware package 19.3 is available.
Mon Jun 01 2026 00:58:49 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: INFO: Servprocd::SpUpdate: UpdateAutoRetriesState: Maximum SP auto-update retries value has been reached : 3
Mon Jun 01 2026 01:17:52 +09:00 [kern_servprocd:info:70645] 0x80a64ae00: 8003e9000009044c: ERR: Servprocd::BmcManager: perform_sp_api_recovery: Ping to BMC IP of destination node(node-n2) from current node (node-n2) failed.
Mon Jun 01 2026 01:17:52 +09:00 [kern_servprocd:info:70645] 0x80a64ae00: 8003e9000009044c: ERR: Servprocd::bmc_client: bmc_get_sensor_info_imp: target_node=node-n2, err=Failed to list sensor info from BMC
Mon Jun 01 2026 01:19:05 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: NOTICE: Servprocd::SpUpdate: SpUpdateStateHandleEvent: New SP firmware package is locally available, SP auto-update has not been triggered.
Mon Jun 01 2026 01:19:05 +09:00 [kern_servprocd:info:70645] 0x808a0f900: 0: NOTICE: Servprocd::SpUpdate: SpUpdateReport: New SP package 19.3 is available on local node.
Mon Jun 01 2026 02:17:59 +09:00 [kern_servprocd:info:70645] 0x80a64a000: 8003e90000090a1d: ERR: Servprocd::SPSensors: get_info_via_cpmi: Failed to list sensor info from BMC on node 'node-n2'(err - 5).

• Environment sensor output fails due to a timeout error:

Cluster::> system environment sensors show -node node-n2
Node Sensor                 State Value/Units Crit-Low Warn-Low Warn-Hi Crit-Hi
---- --------------------- ------ ----------- -------- -------- ------- -------
node-n2
     PSU2 FRU              normal
                                         GOOD
     PSU1 FRU              normal
                                         GOOD
     SP Status             normal
                                   IPMI_HB_OKWarning: Unable to list entries on node node-n2. Failed to list sensor info from BMC
Error: show failed on node "node-n2": Failed to list sensor info from BMC