Juniper Shutdown and Reboot Command
This is from operational mode.
> request system power-off
[It will Shutdown the system]
> request system halt
[It will Shutdown the system]
> request system reboot
[It will Restart the system]
If you execute from Configuration Mode
# run request system power-off
[It will Shutdown the system]
# run request system halt
[It will Shutdown the system]
# run request system reboot
[It will Restart the system]