Zero-Touch Provisioning (ZTP) Not Working
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If you are monitoring your Juniper ZTP server, and you see the file get downloaded, but you get a message like this:
Auto Image Upgrade: Installation of /var/tmp/junos-arm-32-22.3R1-S2.1.tgz image fetched from server 192.168.1.1 through vme failed:[ERROR: Failed to add junos-arm-32-22.3R1-S2.1.tgz]
You need to set an NTP server in your DHCP scope. A Juniper box checks the signatures of the packages it is installing, and if the system clock is too far off, the certificates will not be valid.