Cisco Call Home Disable for Internet blocked devices

[sejamc71]

I have a PLC/Machine network that is internal only and Internet connectivity is blocked completely. This presents an issue or a question at least. On new versions of Cisco IOS, the Call Home feature is enabled by default and cannot be disabled. On my devices, we absolutely do not allow any internet connectivity what so ever.

So...if I put out a 3650 switch in our dirty, greasy plant, is the switch going disable itself or anything if it can't call home? That presents a massive risk to our production

Thoughts?

[marce1000]

  - Check if this document can help you : https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst_slr/b-169-9000-series-SLR-cg/b-169-9000-series-SLR-cg_chapter_00.html

 M.

[Leo Laohoo]

conf t
 no service call-home
 no call-home
end

[sejamc71]

Unfortunately, no service call-home does not disable the call home feature on newer ios

[marce1000]

   - How did you assert or test that ?

 M.

[sejamc71]

I took a brand new switch, did a no service call-home, saved the changes, rebooted the switch and by default the switch re-enables the call-home at boot on newer software versions.

[marce1000]

              - So I expect saving was done , with write memory ?
     Could you test again , and when the configuration has been saved issue the command show startup-configuration  , 
     before reboot ;          has it still disappeared ?

 M.

[Leo Laohoo]

Post the complete output to the command "sh log".  
I want to see the call-home messages.