Mx240 Router Cabinet Airflow Requirements; Figure 41: Airflow Through The Chassis - Juniper MX240 Hardware Manual

MX240 3D Universal Edge Router Hardware Guide

MX240 Router Cabinet Airflow Requirements

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116
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 41 on page 116.
Install the router as close as possible to the front of the cabinet so that the cable
manager just clears 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.

Figure 41: Airflow Through the Chassis

MX240 Router Clearance Requirements for Airflow and Hardware Maintenance on
page 114
MX240 Router Cabinet Size and Clearance Requirements on page 115
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