Juniper QFabric QFX3000-G Hardware Documentation page 447

Installing Spacer Bars and Shelves for QFX3008-I Interconnect Device Four-Post Rack or
Cabinet Mounting
Copyright © 2018, Juniper Networks, Inc.
Before you begin, ensure that you have the following parts and tools available to install
the four-post rack mounting shelf:
A Phillips (+) screwdriver, number 2 or 3, depending on the size of your rack mounting
screws (not provided)
Six mounting screws appropriate for your rack to attach the four-post rack mounting
shelf to the rack (not provided)
UNC 8/32 flat-head screws to attach the four-post rack mounting shelf to the rear
support bracket (provided)
To install the four-post rack mounting shelf:
On the front of each front rack rail, partially insert a mounting screw 1 U below where
1.
you intend to install the chassis.
Install the four-post rack mounting shelf on the front rack rails. Rest the front of the
2.
four-post rack mounting shelf on the mounting screws you installed on the front rack
rails. Rest the back of the four-post rack mounting shelf on top of the rear support
bracket.
Partially insert screws into the open holes in the four-post rack mounting shelf. Tighten
3.
all the screws.
Fasten the four-post mounting shelf to the rear support bracket by partially inserting
4.
the flat-head screws provided in the accessory kit into the open holes on top of the
four-post mounting shelf. Several holes are provided on top of the shelf. Two holes
on each side of the shelf will align with the holes in the rear support bracket. Tighten
all the screws.
Figure 154 on page 398 depicts the spacer bars and small and large shelf mounting
hardware. If the mounting hardware included with your QFX3008-I Interconnect device
instead includes a large shelf that spans the four posts, and rear support bracket, see
"Installing Four-Post Mounting Shelf and Rear Support Bracket for QFX3008-I
Interconnect Device Four-Post Rack or Cabinet Mounting" on page
Chapter 29: Installing a QFX3008-I Interconnect Device
394.
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