Juniper: Shutdown Reboot

To Power Off the switch from CLI:

Use the CLI command request system power-off from operational mode, which displays a message to the CLI, then disconnect the switch from electrical power. This command will also notify other users connected to the switch about the operation.

To halt the switch from CLI:

Use the CLI command request system halt. On the console or other management device connected to the switch (to the master switch in a virtual chassis), enter the CLI operational mode and issue the following command to shut down the switch software:

user@switch> request system halt

   Wait until a message appears on the console confirming that the operating system has halted. For information about the request system halt command, see the Junos OS command documentation.
   Disconnect power from the switch by pulling out the male end of the power cord connected the power source outlet.  

To restart the switch from the CLI:

Use the command request system reboot. This command will also notify other users connected to the switch about the operation.

To restart the switch from the front panel:

   From the LCD front panel menu push the Menu button.
   When the MAIN MENU (Maintenance menu) appears, press the Enter button.
   Select the SYSTEM REBOOT option and press the Enter button.
   To exit the menu without rebooting the switch, press the Menu button again.