Juniper QFabric QFX3000-G Hardware Documentation page 453

Table 137: Two-Post Rack Mounting Hole Locations (continued)
Hole Distance Above "U" Division
12 6.76 in. (17.1 cm)
9 5.01 in. (12.7 cm)
6 3.26 in. (8.3 cm)
3 1.51 in. (3.8 cm)
2 0.88 in. (2.2 cm)
1 0.25 in. (0.6 cm)
Installing Cage Nuts for QFX3008-I Interconnect Device Two-Post Rack Mounting
Installing the Small Mounting Shelf for QFX3008-I Interconnect Device Two-Post Rack Mounting
Copyright © 2018, Juniper Networks, Inc.
Installing Cage Nuts for QFX3008-I Interconnect Device Two-Post Rack
1.
Mounting on page 403
Installing the Small Mounting Shelf for QFX3008-I Interconnect Device Two-Post
2.
Rack Mounting on page 403
Installing the Large Mounting Shelf for QFX3008-I Interconnect Device Two-Post
3.
Rack Mounting on page 404
For racks without threaded holes, you must install cage nuts on the rack rails in the
locations specified in Table 137 on page 402
The hole distances are relative to one of the standard "U" divisions on the rack rails. The
bottom of all mounting shelves is at 0.04 in. (0.02 U) above a U division.
Before you begin, ensure that you have 28 cage nuts appropriate for your rack.
To install the cage nuts in the proper locations:
On the front rack rail, install cage nuts in the holes specified in
1.
for the small shelf.
On the front rack rail, install cage nuts for the center-mounting brackets. The
2.
center-mounting brackets have holes for rack-mounting screws, spaced at
3.5 in. (8.89 cm).
On the rear rack rail, install cage nuts in the holes specified in
3.
for the large shelf.
To mount the chassis on a two-post rack, you must first install the mounting shelves on
the rack.
Chapter 29: Installing a QFX3008-I Interconnect Device
3.86 U
2.86 U
1.86 U
0.86 U
0.50 U
0.14 U
(an indicates a mounting hole location).
X
Small
Large Shelf Shelf
X
X
X
X X
X X
X
Table 137 on page 402
Table 137 on page 402
403