•
Rack type
•
Mounting bracket hole spacing
•
Rack size and strength
•
Rack connection to the building structure
Table 24 on page 113 provides the rack requirements and specifications for a QFX3600 or QFX3600-I
device.
Table 24: Rack Requirements for a QFX3600 or QFX3600-I Device
GuidelinesRack Requirement
Use a two-post 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./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
(http://www.eia.org).
Rack type
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.
Mounting bracket hole
spacing
•
Ensure that the rack complies with the standards for a 19-in. rack as defined in Cabinets,
Racks, Panels, and Associated Equipment (document number EIA-310–D) published by the
Electronics Industry Association.
•
Ensure that the rack rails are spaced widely enough to accommodate the device chassis’
external dimensions. The outer edges of the mounting brackets extend the width to
19.2 in. (48.8 cm).
•
On four-post racks, the front and rear rack rails must be spaced between 19.3 in. (49 cm)
and 36 in. (91.4 cm) front-to-back.
•
The rack must be strong enough to support the weight of the device.
•
Ensure that the spacing of rails and adjacent racks allows for proper clearance around the
device and rack.
Rack size and strength
•
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.
Rack connection to
building structure
The following types of mounting brackets are supplied with each switch:
•
One pair of mounting brackets for front-mounting or rear-mounting the switch on two posts of a rack
•
One pair of mounting brackets for mid-mounting the switch (front or rear facing) on two posts of a rack
113
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