Table 79: Rack Requirements For The Qfx5100 Device - Juniper QFabric QFX3000-G Hardware Documentation

Table 79: Rack Requirements for the QFX5100 Device

Rack Requirement
Rack type (all product
SKUs)
Rack type (QFX5100-96S
only)
Mounting bracket hole
spacing (all product SKUs)
Rack size and strength (all
product SKUs)
Rack connection to building
structure
Related
Documentation
Rack Requirements for a QFX3600 or QFX3600-I Device
Copyright © 2018, Juniper Networks, Inc.
Guidelines
Use a 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.
Use a 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.
The holes in the mounting brackets are spaced at 1 U (1.75 in. or 4.45 cm), so that the switch can
be mounted in any rack that provides holes spaced at that distance.
Ensure that the rack complies with the standards for a 19-in. or 23-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 device's mounting brackets, which measure 19 in. (48.26 cm) from outer edge
to outer edge. Use approved wing devices to narrow the opening between the rails as required.
Ensure that the rack rails are spaced widely enough to accommodate the switch chassis'
external dimensions. The outer edges of the front-mounting brackets extend the width to 19 in.
(48.26 cm).
For four-post installations, the front and rear rack rails must be spaced between 23.6 in. (60
cm) and 36 in. (91.4 cm) front-to-back.
The rack must be strong enough to support the weight of the switch.
Ensure that the spacing of rails and adjacent racks allows for proper clearance around the
switch and rack.
Secure the rack to the building structure.
If earthquakes are a possibility in your geographical area, secure the rack to the floor.
Secure the rack to the ceiling brackets as well as wall or floor brackets for maximum stability.
Chassis Physical Specifications for a QFX5100 Device on page 76
Rack-Mounting and Cabinet-Mounting Warnings on page 343
Clearance Requirements for Airflow and Hardware Maintenance for a QFX5100 Device
on page 248
Mounting a QFX5100 Device in a Rack or Cabinet on page 435
QFX3600 and QFX3600-I devices are designed to be installed on two-post racks or
four-post racks.
Chapter 10: Rack and Cabinet Requirements
233