Mx2020 Rack Requirements; Rack Size And Strength - Juniper MX2020 Hardware Manual

MX2020 Rack Requirements

Rack Size and Strength

Copyright © 2013, Juniper Networks, Inc.
Rack Size and Strength on page 69
Spacing of Mounting Bracket Holes on page 70
Connection to the Building Structure on page 70
The MX2020 router is designed for installation in a rack that complies with either the
following standards: Figure 38 on page
A 19-in. rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document
number EIA-310-D) published by the Electronics Industry Association
( ).
http://www.eia.org
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
( http://www.etsi.org ). The horizontal spacing between the rails in a rack that complies
with this standard is usually wider than the mounting brackets, which measure
19 in. (48.3 cm) from the outer edge to outer edge. Use approved wing devices to
narrow the opening between the rails as required.
A 23-in. rack using appropriate 23-in. to 19-in. rack adapters and an appropriate
installation shelf which supports the chassis at the correct vertical position to properly
lien up the rack mount holes. Juniper Networks does not supply this hardware, but
consideration for the size and weight of the chassis is important for a safe installation.
The rack rails must be spaced widely enough to accommodate the chassis's external
dimensions: 78.75 in. (200 cm) high, 36.20 in. (91.95 cm) deep, and 19 in. (48.26 cm)
wide. The outer edges of the mounting brackets extend the width to 19.2 in. (48.76 cm),
The spacing of rails and adjacent racks must also allow for the clearances around the
chassis and rack that are specified in
Maintenance for the MX2020 Router" on page
For instructions about installing the mounting hardware, see
Mounting Hardware for a Four-Post Rack or Cabinet" on page
The chassis height of 78.75 in. (200 cm) high is approximately 45U. A
rack unit defined in Cabinets, Racks, Panels, and Associated Equipment (document number
EIA-310-D) published by the Electronics Industry Association (
can install one chassis in a rack that has at least 45U (78.75 in. [200 cm]) of usable
vertical space (see Figure 38 on page
NOTE: There must be a minimum of 45U of usable rack space when installing
the MX2020 router into a 45U rack.
The rack must be strong enough to support the weight of the fully configured router,
greater than 1,500 lb (680.39 kg).
Chapter 4: Preparing the Site for MX2020 Router Installation
70.
"Clearance Requirements for Airflow and Hardware
71.
"Installing the MX2020
81.
http://www.eia.org
70).
U is the standard
). You
69