Juniper EX4500 Series User Manual

Table 22: Cabinet Requirements and Specifications for the Switch
GuidelinesCabinet Requirement
■
You can mount the switch in a cabinet that contains a
19-in. rack as defined in Cabinets, Racks, Panels, and
Associated Equipment (document number EIA-310–D)
published by the Electronics Industry Association
(http://www.eia.org).
NOTE: The rack must meet the strength requirements to
support the weight of the switch.
■
The minimum cabinet size must be able to accommodate
the maximum external dimensions of the switch.
Cabinet size
■
The outer edges of the mounting brackets extend the
width of the chassis to 19 in. (48.3 cm).
■
The minimum total clearance inside the cabinet is 30 in.
(76.2 cm) between the inside of the front door and the
inside of the rear door.
Cabinet clearance
When you mount the switch in a cabinet, ensure that
ventilation through the cabinet is sufficient to prevent
overheating.
■
Ensure adequate cool air supply to dissipate 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.
■
Install the switch in the cabinet in a way that maximizes
the open space on the side of the chassis that has the
hot air exhaust. 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.
■
A cabinet larger than the minimum required provides
better airflow and reduces the chance of overheating.
Cabinet airflow requirements
Related Topics ■ Chassis Physical Specifications for EX4500 Switches on page 6
■ Clearance Requirements for Airflow and Hardware Maintenance for EX4500
Switches on page 52
■ Rack-Mounting and Cabinet-Mounting Warnings for EX Series Switches on
page 159
■ Mounting an EX4500 Switch on page 65
Cabinet Requirements for EX4500 Switches ■ 51
Chapter 5: Rack and Cabinet Requirements

Juniper EX4500 Series Specifications

General

Brand	Juniper
Model	EX4500 Series
Category	Switch
Language	English