Juniper MX480 - MX480 Router Cabinet Size and Clearance Requirements; MX480 Router Cabinet Airflow Requirements

MX480 Router Cabinet Size and Clearance Requirements
Theminimum size cabinet that can accommodatethe routeris 482 mm wide and 800 mm
deep. A cabinet larger than the minimum requirement provides better airflow and reduces
the chance of overheating. To accommodate a single router, the cabinet must be at least
13 U high. If you provide adequate cooling air and airflow clearance, you can stack five
routers in a cabinet that has at least 48 U (84 in. or 2.13 m) of usable vertical space.
The minimum front and rear clearance requirements depend on the mounting
configuration you choose. The minimum total clearance inside the cabinet is 30.7 in.
between the inside of the front door and the inside of the rear door.
Related
Documentation
MX480 Site Preparation Checklist on page 121•
• MX480 Router Cabinet Airflow Requirements on page 126
• Installation Safety Warnings for Juniper Networks Devices
MX480 Router Cabinet Airflow Requirements
Before you install the router in a cabinet, you must ensure that ventilation through the
cabinet is sufficient to prevent overheating. Consider the following requirements to 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.
•
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
Figure 42 on page 127.
•
Install the router as close as possible to the front of the cabinet so that the cable
management brackets just clear the inside of the front door. This maximizes the
clearance in the rear of the cabinet for critical airflow.
•
Route and dress all cables to minimize the blockage of airflow to and from the chassis.
Copyright © 2017, Juniper Networks, Inc.126
MX480 3D Universal Edge Router Hardware Guide