Overview of VMware VeloCloud SD-WAN Zero-Touch Activation Process
In VMware VeloCloud SD-WAN, It deployed DHCP service with default NTP, DNS
During zero-touch activation, the VMware SD-WAN Edge appliance communicates with the VMware SD-WAN router, the orchestrator, and the gateway using various protocols.
More details can be found on How to troubleshoot ZTP (Zero Touch Provisioning) for VMware SD-WAN