If a brand new MX68 is powered up (without any Internet connection), are the PoE ports always on? and do they then stay on, including for reboots, firmware updates etc.
We have a PoC coming up and there will be no landline WAN, so it's planned to use an external MG51. It's also hundreds of km from the closest person in my team, we need to be sure we can cover issues remotely once it's running.
If they can't get an injector in time, the option would be power the MG from an MX LAN PoE port.
I'd prefer a power injector, it avoids running two cables outside to the MG (one MX WAN, one MX LAN PoE).
I think the PoE ports are always on in normal operation, but if they switch off during reboot, firmware update etc. concerned it could cause longer outage while the MG restarts.