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rails. The adjustable mounting brackets installed in the rack ensure that the holes
in the front-mounting brackets align with the holes in the rack rails.
In a two-post rack, carefully slide the switch into the rack ensuring that the front
bottom of the chassis rests on the lip of the power cord tray. The front-mounting
brackets (“ears”) prevent the chassis from tipping too far back.
6. Move the lift away from the rack.
7. In a four-postrack, slide the chassisso that the front-mounting bracket is flush with
the front of the rack.
Inatwo-postrack,pushthebottomofthechassissothatthefront-mountingbracket
is flush with the front of the rack.
8. Install a mounting screw into each of the open front-mounting holes aligned with
the rack, starting from the bottom.
9. Visually inspect the alignment of the switch. If the switch is installed properly in the
rack, all the mounting screws on one side of the rack are aligned with the mounting
screws on the opposite side and the switch is level.
10. After ensuring that the switch is aligned properly, tighten the screws.
Related Topics Powering On an EX8200 Switch on page 180•
• Connecting and Configuring an EX Series Switch (CLI Procedure) on page 190
• Connecting and Configuring an EX Series Switch (J-Web Procedure) on page 192
Mounting an EX8208 Switch on a Rack or Cabinet Without Using a Mechanical Lift
If you cannot use a mechanical lift to install the switch (the preferred method), you can
install it manually.
CAUTION: The chassis with only the backplane and no other components weighs
approximately 89 lb (41 kg). Lifting the chassis and mounting it in a rack or cabinet
requires at least three people.
The chassis has two handles. Do not lift a fully loaded chassis by the handles; make
sure the chassis is empty (contains only the backplane) before you lift it. If two of the
people lifting the chassis use the handles to lift it, the third person must lift from the
rearof the chassis. The rearof the chassis is heavier than the front of the chassis, so
when you lift the chassis by the handles, the chassis tips toward the heavier back end.
Theperson lifting from the back must be aware of this behavior and must be bracedto
prevent the chassis from tipping over.
When lifting the chassis, do not grasp the switch by the blue panel at the top front of
the chassis. Doing so can cause the panel to pop off of the switch.
143Copyright©2010,Juniper Networks,Inc.
Chapter8:Installing theSwitch