Image Upgrade

If you upgrade from any 15.xx version to version 16.xx, the following minimal set of configuration is validated to enable or disable the ZTP process:

If the switch has any other VLAN apart from the default VLAN, ZTP gets disabled.
In default VLAN, if the IPv4 address is not set as DHCP (default option is DHCP), ZTP gets disabled.
In default VLAN, if IPv6 is enabled or configured, ZTP gets disabled.

If you have any other configuration during the upgrade, ZTP will continue to be in the enabled state.