Mx240 Router Cabinet Airflow Requirements; Mx240 Power Planning - Juniper MX240 Hardware Manual

MX240 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 45 on page 185.
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.
Figure 45: Airflow Through the Chassis

MX240 Power Planning

IN THIS SECTION
Power Requirements for an MX240 Router | 186
Calculating Power Requirements for MX240 Routers | 196
185