Qfx5200 Cabinet Requirements; Qfx5200 Clearance Requirements For Airflow And Hardware Maintenance; Table 20: Cabinet Requirements For The Qfx5200; Table - Juniper QFX5200 Hardware Manual

QFX5200 Switch Hardware Guide

QFX5200 Cabinet Requirements

Table 20: Cabinet Requirements for the QFX5200

Cabinet Requirement
Cabinet size and clearance
Cabinet airflow requirements
Related
Documentation

QFX5200 Clearance Requirements for Airflow and Hardware Maintenance

36
Mounting a QFX5200 in a Rack or Cabinet on page 59
You can mount the QFX5200 in an enclosure or cabinet that contains a four-post 19-in.
open rack as defined in Cabinets, Racks, Panels, and Associated Equipment (document
number EIA-310-D) published by the Electronics Industry Association.
Cabinet requirements consist of:
Cabinet size and clearance
Cabinet airflow requirements
Table 20 on page 36 provides the cabinet requirements and specifications for the
QFX5200.
Guidelines
The minimum cabinet size for accommodating a QFX5200 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 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.
QFX5200 Clearance Requirements for Airflow and Hardware Maintenance on page 36
QFX5200 Rack Requirements on page 35
Rack-Mounting and Cabinet-Mounting Warnings on page 138
When planning the site for installing a QFX5200, you must allow sufficient clearance
around the installed chassis (see Figure 17 on page 37).
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