Juniper QFX3000-G QFabric, Руководство по развертыванию, Страница: 191 / 652

Table 60: Four-Post Rack or Cabinet Mounting Hole Locations (continued)
Small
Shelf Spacer
Bars Large
Shelf
Distance Above U Division Hole
X X 0.50 U 0.88 in. (2.2 cm) 2
X
0.14 U 0.25 in. (0.6 cm) 1
•
Installing Cage Nuts for QFX3008-I Interconnect Device Four-Post Rack or Cabinet
Mounting on page 165
• Installing the Small Mounting Shelf for QFX3008-I Interconnect Device Four-Post Rack
or Cabinet Mounting on page 165
•
Installing the Large Mounting Shelf and Spacer Bars for QFX3008-I Interconnect Device
Four-Post Rack or Cabinet Mounting on page 166
Installing Cage Nuts for QFX3008-I Interconnect Device Four-Post Rack or Cabinet
Mounting
For racks without threaded holes, you must install cage nuts on the rack or cabinet rails
in the locations specified in
Table 60 on page 164 (an
X
indicates a mounting hole location).
Before you begin, ensure that you have 22 cage nuts appropriate for your rack or cabinet.
To install the cage nuts in the proper locations:
1.
On the front rack or cabinet, install cage nuts in the holes specified in
Table 60 on page 164 for the large shelf and the spacer bars.
2.
On the rear rack or cabinet, install cage nuts in the holes specified in
Table 60 on page 164 for the small shelf.
Installing the Small Mounting Shelf for QFX3008-I Interconnect Device Four-Post
Rack or Cabinet Mounting
To mount the chassis on a four-post rack or cabinet, you must first install the mounting
shelves and spacer bars on the rack or cabinet.
Before you begin, ensure that you have the following parts and tools available to install
the small mounting shelf:
•
A Phillips (+) screwdriver, number 2 or 3, depending on the size of your rack mounting
screws
• Six mounting screws appropriate for your rack to attach the small mounting shelf to
the rack
To install the small mounting shelf:
1.
On the back of each rear rack rail, partially insert a mounting screw into the lowest
hole specified in
Table 60 on page 164 for the small shelf.
165 Copyright © 2015, Juniper Networks, Inc.
Chapter 10: Installing a QFX3008-I Interconnect Device