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with removing the hot air exhaust. For an illustration of chassis airflow, see Figure 16
on page 33.
•
Route and dress all cables to minimize the blockage of airflow to and from the chassis.
Related
Documentation
M120 Cabinet Size and Clearance Requirements on page 38
•
•
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on
page 49
M120 Rack Mounting Requirements
The router can be installed in a rack. Many types of racks are acceptable, including
four-post (telco) racks and open-frame racks. An example of an open-frame rack appears
in Figure 20 on page 41. Table 16 on page 39 summarizes rack requirements and
specifications for the M120 router.
Table 16: M120 Rack Requirements and Specifications
Guidelines
Rack Requirement
Use a four-post rack or a two-post rack. You can mount the router on any four-post
or two-post rack that provides bracket holes or hole patterns spaced at 1 U
(1.75-in./4.44-cm) increments and that meets the size and strength requirements
specified in this table.
A U is the standard rack unit defined in
Cabinets, Racks, Panels, and Associated
Equipment
(document number EIA-310–D) published by the Electronics Industry
Association (
http://www.eia.org
).
Rack type and mounting bracket hole
spacing
39
Copyright © 2010, Juniper Networks, Inc.
Chapter 3: Preparing the Site for M120 Router Installation
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