Juniper Networks EX2200 manual Cabinet Requirements and Specifications for the Switch

Chapter 5: Mounting and Clearance Requirements

Table 19: Cabinet Requirements and Specifications for the Switch

Cabinet Requirement	Guidelines
Cabinet size	• 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 clearance	• 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 airflow requirements	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.
Related •	Chassis Physical Specifications for EX2200 Switches on page 5
Documentation	Clearance Requirements for Airflow and Hardware Maintenance for EX2200 Switches
•
	on page 42
• Rack-Mounting and Cabinet-Mounting Warnings for EX Series Switches on page 129

• Mounting an EX2200 Switch on Two Posts in a Rack or Cabinet on page 55

• Mounting an EX2200 Switch on Four Posts in a Rack or Cabinet on page 57

• Mounting an EX2200 Switch in a Recessed Position in a Rack or Cabinet on page 61

Copyright © 2010, Juniper Networks, Inc. 41