What device identifiers must be provided to PNP/ZTP for zero-touch onboarding?
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Correct answer: serial and chassis numbers.
Why this is the answer
For zero-touch provisioning (ZTP) or Plug and Play (PnP) to function, the Cisco SD-WAN orchestrator (vManage) needs to identify the physical device attempting to onboard. This identification is done using the unique serial number and the chassis number of the device. These identifiers are burned into the hardware and are used by the PnP connect service to validate the device against the inventory registered in vManage. The interface IP address is assigned during or after the onboarding process, not used for initial identification. A public DNS entry is for name resolution and not a device identifier for ZTP. The system IP address is a logical identifier within the SD-WAN fabric, configured after the device has been onboarded and authenticated.
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