Juniper Networks EX4200 - Manual (Page 116)

Table 28: Cabinet Requirements and Specifications for the Switch (continued)
Guidelines Cabinet Requirement
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 switch fans exhaust hot air through the rear of the
chassis. Install the switch in the cabinet in a way that
maximizes the open space on the fan tray 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.
Cabinet airflow requirements
Related Topics Clearance Requirements for Airflow and Hardware Maintenance for EX3200 and
EX4200 Switches on page 91 ■
■ Rack Requirements for EX3200 and EX4200 Switches on page 87
■ Mounting an EX3200 or EX4200 Switch on Two Posts in a Rack or Cabinet on
page 118
Requirements for Mounting an EX3200 or EX4200 Switch on a Desktop or Wall
You can install the switch on a desktop or wall. When choosing a location, allow at
least 6 in. (15.2 cm) of clearance between the front and back of the chassis and
adjacent equipment or walls.
Ensure that the wall onto which the switch is installed is stable and securely supported.
If you are mounting the switch in sheetrock (wall board with a gypsum plaster core)
or in wall board not backed by wall studs, use hollow wall anchors capable of
supporting the combined weight of two fully loaded chassis. Insert the screws into
wall studs wherever possible to provide added support for the chassis.
Use the wall-mount kit from Juniper Networks to mount the switch on a wall. The
wall-mount kit is not part of the standard package and needs to be ordered separately.
90 ■ Requirements for Mounting an EX3200 or EX4200 Switch on a Desktop or Wall
Complete Hardware Guide for EX3200 and EX4200 Ethernet Switches