Router; Figure 39: Chassis Dimensions And Clearance Requirements For The Mx2020; Preparing The Site For Mx2020 Router Installation - Juniper MX2020 Hardware Manual

Clearance Requirements for Airflow and Hardware Maintenance for the MX2020 Router
Copyright © 2013, Juniper Networks, Inc.
When planning the installation site, you need to allow sufficient clearance around the
rack (see Figure 39 on page
For the cooling system to function properly, the airflow around the chassis must be
unrestricted.
For service personnel to remove and install hardware components, there must be
adequate space at the front and back of the router. At least 36 in. (91.44 cm) is required
both in front of and behind the router.
Airflow must always be from front to back with respect to the rack to ensure that fresh
air from the front of the rack is supplied to the inlets, and exhaust exits the rear of the
rack. Care must also be taken around cables to ensure that no leakage of air in situations
where recirculation may result.
NOTE: There are no additional clearance requirements to accommodate
the depth of the cable managers.
NOTE: There are no additional clearance requirements to accommodate
the depth of the MX2020 Power Distribution Modules (PDMs), and Power
Supply Modules (PSMs); they are within specification.
Figure 39: Chassis Dimensions and Clearance Requirements for the
MX2020 Router
36" (91.44 cm)
clearance required
Front
19 in
(48.26 cm)
Front-mounting flange
NOTE: There must be a minimum of 45U of usable rack space when installing
the MX2020 router into a 45U rack.
Chapter 4: Preparing the Site for MX2020 Router Installation
71):
36.20"
(91.95 cm)
Cable manager
36" (91.44 cm)
clearance recommended
Rear
17.5"
(44.45 cm)
71