Juniper EX3300 Series User Manual

Follow these clearance requirements:
•
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 asa wall. For the cooling system to function properly,
the airflow around the chassis must be unrestricted.
Figure 13 on page 51 shows airflow in a front-to-back airflow model.
Figure 13: Front-to-Back Airflow Through the EX3300 Switch Chassis
g021205
Chassis rear
Chassis front
Fan
Fan
Air intake
Fan air
exhaust
Air intake
Air exhaust
Figure 14 on page 52 shows airflow through a back-to-front airflow model.
51Copyright © 2011, Juniper Networks, Inc.
Chapter 5: Mounting and Clearance Requirements

Juniper EX3300 Series Specifications

General

Layer Support	Layer 2 and Layer 3
JUNOS OS	Yes
Ports	24 or 48 x 10/100/1000BASE-T ports
Uplink Ports	4 x 1GbE/10GbE SFP/SFP+ ports
Power Supply	AC or DC options
Stacking	Yes, up to 10 units
MAC Address Table Size	32, 000
Operating Humidity	10% to 90% non-condensing
PoE Support	Available on PoE models
Virtual Chassis	Yes, up to 10 units
Operating Temperature	32° to 104° F (0° to 40° C)