Stephane,
This also appears to be the case with PoE. I have PoE enabled globally in the ZTP+ Device Defaults and ZTP+ seems to be trying to apply it to non-PoE ports.
20793 1525445366930 ZTP+ Events.6.Event --- 1708N-40331 192.1...
Stephen and Stephane,
I'm seeing the same error. When I try to enter the command that is failing to a 10GigE port on my X460G2-48p-10G4, I get the following.
Slot-1 LabNet_Core.2 # conf port 1:51 auto on
Error: Speed has to be specified on port ...