Juniper Networks J-Series manual This option is a synonym for the at + minutes option

Chapter 10: Performing Software Upgrades and Reboots

Table 102: CLI Request System Halt Command Options (continued)

Option	Description
at time	Time at which to stop the software processes on the router. You can specify time in
	one of the following ways:
	■ now—Stops the software processes immediately. This is the default.
	■ +minutes—Stops the software processes in the number of minutes from now that
	you specify.
	■ yymmddhhmm—Stops the software processes at the absolute time you specify.
	Enter the year, month, day, hour (in 24-hour format), and minute.
	■ hh:mm—Stops the software processes at the absolute time that you specify, on
	the current day. Enter the time in 24-hour format, using a colon (:) to separate
	hours from minutes.
in minutes	Specifies the number of minutes from now to stop the software processes on the router.
	This option is a synonym for the at +minutes option.
media type	Specifies the boot device to boot the router from after the halt:
	■ compact-flash—Reboots from the internal compact flash. This is the default.
	■ removable-compact-flash—Reboots from the optional external compact flash. This
	option is available on J2320, J2350, J4300, and J6300 Services Routers only.
	■ usb—Reboots from the USB storage device.
message "text"	Provides a message to display to all system users before the software processes on the
	router are stopped.

Rebooting or Halting a Services Router ■ 197