Juniper QFabric QFX3000-G Hardware Documentation page 444

QFX3000-G QFabric System Hardware Documentation
Installing QFX3008-I Interconnect Device Mounting Hardware on Four-Post Racks or
Cabinets
Installing Four-Post Mounting Shelf and Rear Support Bracket for QFX3008-I Interconnect
Device Four-Post Rack or Cabinet Mounting
394
Before you install the QFX3008-I Interconnect device in a four-post rack or cabinet, you
must first install mounting hardware and remove the center-mounting brackets from
the chassis.
NOTE: In a rack, the device uses 21 U. You can mount two QFX3008-I
Interconnect devices on a 42 U rack provided that the racks meet the strength
requirements to support the combined weight of the devices. If you are
mounting two QFX3008-I Interconnect devices on a rack, mount the first
device on the bottom of the rack.
There are two styles of mounting hardware for the QFX3008-I Interconnect device. One
style of mounting hardware uses a large shelf that spans the four rack posts and rests
on a rear support bracket. The other style of mounting hardware uses a large shelf on
the front posts, a smaller shelf on the rear posts, and spacer bars mounted to the rack
posts to ensure proper alignment of rack-mounting screws.
Figure 154 on page 398 depict the different styles of mounting hardware.
Depending on which style of mounting hardware you have, perform one of the first two
tasks, then remove the center-mounting brackets from the chassis:
Installing Four-Post Mounting Shelf and Rear Support Bracket for QFX3008-I
Interconnect Device Four-Post Rack or Cabinet Mounting on page 394
Installing Spacer Bars and Shelves for QFX3008-I Interconnect Device Four-Post
Rack or Cabinet Mounting on page 397
Removing the Adjustable Center-Mounting Brackets for QFX3008-I Interconnect
Device Four-Post Rack or Cabinet Mounting on page 401
Figure 153 on page 395 depicts the four-post mounting shelf and rear support bracket
mounting hardware. If the mounting hardware included with your QFX3008-I Interconnect
device instead includes spacer bars and two shelves, see
Shelves for QFX3008-I Interconnect Device Four-Post Rack or Cabinet Mounting" on
page 397.
Figure 153 on page 395
"Installing Spacer Bars and
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