Juniper QFX Series User Manual

3. Shut down the Control Boards by issuing the request system halt both-routing-engines
operational mode CLI command. This command shuts down the devices gracefully
and preserves system state information. A message appearson the console, confirming
that the operating system has halted.
You see the following output (or something similar) after entering the command:
Halting re1
*** FINAL System shutdown message from user@switch***
System going down IMMEDIATELY
Shutdown NOW!
[pid 859]
user@switch> JWaiting (max 60 seconds) for system process `vnlru' to stop...done
Waiting (max 60 seconds) for system process `bufdaemon' to stop...done
Waiting (max 60 seconds) for system process `syncer' to stop...
Syncing disks, vnodes remaining...2 2 2 1 1 0 0 0 0 done
syncing disks... All buffers synced.
Uptime: 3h3m49s
recorded reboot as normal shutdown
The operating system has halted. Please press any key to reboot.
CAUTION: The final output of any version of the request system halt
command is the “The operating system has halted. Please press any key
to reboot” message. Wait at least 60 seconds after first seeing this
message beforefollowingthe instructions in Step 5 to poweroff the switch.
4. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD
point on the chassis.
5. Set the wiring tray switch to the OFF (O) position. Observe the wiring tray LEDs. The
power supply LEDs should turn off (appear unlit). Repeat this step for the second
wiring tray.
NOTE: After you power off a wiring tray, wait for at least 60 seconds before
you turn it back on. After you power on a wiring tray, wait for at least
60 seconds before you turn it back off.
Related
Documentation
Connecting AC Power to a QFX3008-I Interconnect Device with Single-Phase Wiring
Trays on page 239
•
• Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Delta
Wiring Trays on page 246
• Connecting AC Power to a QFX3008-I Interconnect Device with Three-Phase Wye
Wiring Trays on page 250
297Copyright © 2012, Juniper Networks, Inc.
Chapter 24: Removing or Replacing a Device

Juniper QFX Series Specifications

General

Category	Switch
Series	QFX
Form Factor	1U, 2U, and modular chassis options
Power Supply	Redundant, hot-swappable power supplies
Cooling	hot-swappable fans
Virtual Chassis	Supported on certain models
Typical Use	Data center, cloud
Operating System	Junos OS
Management	CLI
Key Features	High performance, low latency, automation
Latency	Sub-microsecond latency
Port Density	Varies by model (e.g., QFX5100: up to 48x10GbE + 6x40GbE)