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M120 Cabinet Airflow Requirements
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M120 Rack Mounting Requirements
Copyright © 2018, Juniper Networks, Inc.
The minimum front and rear clearance requirements depend on the mounting
configuration you choose. The minimum total clearance inside the cabinet is 30.70 in.
between the inside of the front door and the inside of the rear door.
NOTE:
If you mount the router in a cabinet, be sure that sufficient room is
provided for cable management and cables.
M120 Cabinet Airflow Requirements on page 83
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on
page 119
When you mount the router in a cabinet, you must ensure that ventilation through the
cabinet is sufficient to prevent overheating. Following is a list of requirements to consider
when planning for chassis cooling:
Ensure that the cool air supply you provide through the cabinet can adequately dissipate
the thermal output of the router.
specifications, including its operating temperature and thermal output.
Ensure that the cabinet allows the chassis hot exhaust air to exit from the cabinet
without recirculating into the router. An open cabinet (without a top or doors) that
employs hot air exhaust extraction from the top allows the best airflow through the
chassis. If the cabinet contains a top or doors, perforations in these elements assist
with removing the hot air exhaust. For an illustration of chassis airflow, see
page
20.
Route and dress all cables to minimize the blockage of airflow to and from the chassis.
M120 Cabinet Size and Clearance Requirements on page 82
Installing the Mounting Hardware for a Front-Mount Four-Post Rack or Cabinet on
page 119
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 23 on page
85.
Table 48 on page 84
specifications for the M120 router.
Chapter 9: Preparation Overview
Table 49 on page 86
lists the router's environmental
summarizes rack requirements and
Figure 7 on
83
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