Table 27: Cabinet Requirements For The Qfx5100 Device - Juniper QFX5100 Hardware Manual

QFX5100 Switch Hardware Guide

Table 27: Cabinet Requirements for the QFX5100 Device

Cabinet Requirement
Cabinet size and clearance
Cabinet airflow requirements
Related
Documentation
Clearance Requirements for Airflow and Hardware Maintenance for a QFX5100 Device
76
Guidelines
The minimum cabinet size for accommodating a QFX5100 device is 36 in. (91.4 cm)
deep. Large cabinets improve airflow and reduce the chance of overheating.
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 QFX5100 device 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.
Clearance Requirements for Airflow and Hardware Maintenance for a QFX5100 Device
on page 76
Rack Requirements for a QFX5100 Device on page 74
Mounting a QFX5100 Device in a Rack or Cabinet on page 160
When planning the site for installing a QFX5100 device, you must allow sufficient
clearance around the installed chassis (see Figure 39 on page 77).
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