Table 77: Rack Requirements And Specifications For The Qfx3100 Director - Juniper QFabric QFX3000-G Hardware Documentation

QFX3000-G QFabric System Hardware Documentation
Rack Requirements for a QFX3100 Director Device
Table 77: Rack Requirements and Specifications for the QFX3100 Director Device
Rack Requirement Guidelines
Rack type Use a two-post rack or a four-post rack. You can mount the switch on any two-post or four-post rack
that provides bracket holes or hole patterns spaced at 1 U (1.75 in. or 4.45 cm) increments and that
meets the size and strength requirements to support the weight.
A U is the standard rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document
number EIA-310-D) published by the Electronics Industry Association.
The rack must meet the strength requirements to support the weight of the chassis.
Mounting bracket The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the QFX3100 Director
hole spacing device can be mounted in any rack that provides holes spaced at that distance.
Rack size and Ensure that the rack complies with one of these standards:
strength
Ensure that the rack is one of the following standard lengths:
Ensure that the rack rails are spaced widely enough to accommodate the QFX3100 Director device
chassis' external dimensions. The outer edges of the front-mounting brackets extend the width of
the chassis to 19 in. (48.2 cm).
The rack must be strong enough to support the weight of the QFX3100 Director device.
Ensure that the spacing of rails and adjacent racks allows for the proper clearance around the
QFX3100 Director device and rack.
230
You can mount the QFX3100 Director device on two-post racks or four-post racks.
Rack requirements consist of:
Rack type
Mounting bracket hole spacing
Rack size and strength
Rack connection to the building structure
Table 77 on page 230 provides the rack requirements and specifications for the QFX3100
Director device.
A 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document number
EIA-310-D) published by the Electronics Industry Association.
A 600-mm rack as defined in the four-part Equipment Engineering (EE); European
telecommunications standard for equipment practice (document numbers ETS 300 119-1 through
119-4) published by the European Telecommunications Standards Institute.
The horizontal spacing between the rails in a rack that complies with this standard is usually wider
than the QFX3100 Director device's mounting brackets, which measure 19 in. (48.2 cm) from outer
edge to outer edge. Use approved wing devices to narrow the opening between the rails as required.
23.62 in. (600 mm)
30 in. (762 mm)
21.5 in. (546 mm)
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