Juniper QFX5200 Hardware Manual page 84

Table 31: Cabinet Requirements for the QFX5200
Cabinet Requirement
Cabinet airflow requirements
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(Continued)
Guidelines
When you mount the switch in a cabinet, ensure that ventilation through
the cabinet is sufficient to prevent overheating.
•
Ensure that the cool air supply you provide through the cabinet
adequately dissipates the thermal output of the switch (or switches).
•
Ensure that the cabinet allows the chassis hot exhaust air to exit the
cabinet without recirculating into the switch. 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.
•
The QFX5200 fans exhaust hot air either through the vents on the
port panel or through the fans and power supplies. Install the switch
in the cabinet in a way that maximizes the open space on the FRU
side of the chassis. This maximizes the clearance for critical airflow.
•
Route and dress all cables to minimize the blockage of airflow to and
from the chassis.
•
Ensure that the spacing of rails and adjacent cabinets allows for the
proper clearance around the switch and cabinet.
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