The following figures are screenshots captured during the factory default ZTP staging that occurs when a factory default Dell switch is powered on. The same flow also occurs when you delete all NOSes from the switch, and you reboot the switch.
Figure 6. ONIE starts discovery and execution process for ZTP install and seeks an image
Figure 7. ONIE locates an initial image requested from webserver and installs it
Figure 8. ONIE reboots switch and Grub loads SONiC 3.5.2
Figure 9. SONiC loads its first run while still in ZTP mode
Figure 10. SONiC comes online in ZTP mode and requests ZTP data json file
Figure 11. SONiC ZTP downloads all relevant files according to ZTP data JSON file and installs desired firmware
Figure 12. Switch reboots with SONiC 4.0
Figure 13. Updated Grub menu with both SONiC versions; 4.0 is default selected
Figure 14. SONiC 4.0 loads and provisioning script finishes
Figure 15. Hostname is set and version check of correct SONiC version
Figure 16. ZTP status shows all JSON data elements correctly finished and ZTP inactive
Figure 17. Logging of http container shows all requested files during this factory default ZTP staging flow