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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.
Figure 60: Installing the Mounting Hardware for a Four-Post Rack or
Cabinet
g050124
For a four-post rack or cabinet,
specifies the holes in which you
insert mounting screws (an
X
indicates a mounting hole location), and cage nuts if needed.
The hole distances are relative to one of the standard “U” divisions on the rack. For
reference, the bottom of all mounting shelves is at 0.04 in. (0.02 U) above a U division.
Table 60: Four-Post Rack or Cabinet Mounting Hole Locations
Small
Shelf
Spacer
Bars
Large
Shelf
Distance Above U Division
Hole
X
16.86 U
29.51 in. (74.9 cm)
51
X
13.86 U
24.26 in. (61.6 cm)
42
X
10.86 U
19.01 in. (48.3 cm)
33
X
9.86 U
17.26 in. (43.8 cm)
30
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