Juniper EX Series Complete Hardware Guide

■ Allow at least 6 in. (15.2 cm) of clearance on the side between devices that have
fans or blowers installed. Allow 2.8 in. (7 cm) between the side of the chassis
and any non-heat-producing surface such as a wall. For the cooling system to
function properly, the airflow around the chassis must be unrestricted.
Figure 25 on page 53 shows the airflow through the EX 3200 switch chassis and
Figure 26 on page 54 shows the airflow through the EX 4200 switch chassis.
■ If you are mounting a switch in a rack or cabinet with other equipment, or if you
are placing it on the desktop or floor near other equipment, ensure that the
exhaust from other equipment does not blow into the intake vents of the chassis.
■ Leave at least 24 in. (61 cm) both in front of and behind the switch. For service
personnel to remove and install hardware components, you must leave adequate
space at the front and back of the switch. NEBS GR-63 recommends that you
allow at least 30 in. (76.2 cm) in front of the rack or cabinet and 24 in. (61 cm)
behind the rack or cabinet.
Figure 25: Airflow Through the EX 3200 Switch Chassis
Clearance Requirements for Airflow and Hardware Maintenance ■ 53
Chapter 2: Preparing the Site for Switch Installation

Juniper EX Series Specifications

General

Series	EX Series
Category	Switch
Layer	Layer 2/3
Operating System	Junos OS
Managed	Yes
ACLs	Yes
Port Density	Varies by model
Power over Ethernet (PoE)	Available on some models
Virtual Chassis	Supported on some models
Form Factor	Fixed configuration, Modular
Switching Capacity	Varies by model
Forwarding Rate	Varies by model
Power Supply	Varies by model (AC or DC, redundant options available)
Management	CLI, Web UI, SNMP
Redundancy	Power supply, fan, Virtual Chassis
Latency	Varies by model
Jumbo Frames	Supported
VLAN Support	Yes
MAC Address Table Size	Varies by model
QoS	Yes
Energy Efficiency	EEE (802.3az)
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	0° to 45° C
Storage Temperature	-40° to 70° C
Humidity	5% to 90% non-condensing
MTBF	Varies by model
Warranty	Limited Lifetime