CIMC Malfunction (DNAC)

[JB22]

Hello, I am trying to connect to cimc via https. The user/pass combination works perfectly with ssh. I get this error message via the web GUI. There is definitely power! ssh is running at the same time. Thanks

"The server does not seem to be responding. Please make sure that the power supply is connected / present and that the Cisco IMC IP address is correct.  OK "

show bios
BIOS Version Boot Order
--------------------------------------------- ----------------------------
C220M4.3.0.3c.0.0831170216 (none)

show cimc
Firmware Version Current Time Local Time
-------------------- ------------------------ ------------------------------
3.0(3f)

[Andrii Oliinyk]

FW in the middle is blocking HTTPs?
or disabled HTTPS access on the CIMC (Admin > Communication Services or Network > Services depending on firmware version)?

[JB22]

Thanks for your answer!

No FW inside.

https is on (portscan and Website is running). ... As long as i do not access cimc i can not change it. But it is available.

[Andrii Oliinyk]

https of cimc & dnac ui are different things
check with cimc cli 
Server# scope cimc
Server /cimc # scope http

[JB22]

Hi

I know. I’m trying to access the CIMC. Both services (DNAC and CIMC) are definitely running. The error message is incorrect.

[JB22]

There is no option "http" or "https"...

/cimc # scope
adapter-secure-update enable/disable/show adapter security version check
firmware Cisco IMC firmware management
import-export Import or export Cisco IMC configuration
log Cisco IMC trace log/syslog
network Cisco IMC Networking Management
power-restore-policy Power Restore Policy parameters
remote-management Cisco IMC Remote Management
tech-support Gather and upload technical support information

[JB22]

II performed a factory default reset of the CIMC. This definitely worked, without any doubt. However, the situation afterward is exactly the same as before, including the identical error message.

I would like update the cimc firmware by using ssh. Any ideas where to get the actual firmware?

[JB22]

show bios detail
BIOS:
BIOS Version: C220M4.3.0.3c.0.0831170216
Backup BIOS Version: C220M4.3.0.3c.0.0831170216
Boot Order: (none)
FW Update/Recovery Status: None, OK
UEFI Secure Boot: disabled
Configured Boot Mode: None
Actual Boot Mode: Unknown
Last Configured Boot Order Source: UNKNOWN
One time boot device: (none)

show cimc detail
Cisco IMC:
Firmware Version: 3.0(3f)
Current Time: Fri Jan 16 08:01:21 2026
Boot-loader Version: 3.0(3f).36
Local Time: Fri Jan 16 08:01:21 2026 UTC +0000
Timezone: UTC
Reset Reason: graceful-reboot

[Cristian Matei]

Hi,

   You need a Cisco account with appropriate rights / support contract to download the firmware, latest recommended version for your gear being: https://software.cisco.com/download/home/286281345/type/283850974/release/4.1(2m)

 Upgrade guide can be found here:

https://www.cisco.com/en/US/docs/unified_computing/ucs/c/sw/gui/config/guide/1.5/b_Cisco_UCS_C-series_GUI_Configuration_Guide.151_chapter_01101.html#task_F30C9D617C924B44B56E456A708EA32F

Good luck,

Cristian.