Figure 7: Air In Airflow Through Ex4600 Switch Chassis - Juniper EX4600 Series Hardware Manual

Table 6: Fan Modules for EX4600 Switches (continued)
Fan Module Airflow Diagram
QFX5100-FAN-AFO Figure 8 on page 16
* Optics, Fans and Power supply sold separately for EX4600-40F-S.
Copyright © 2014, Juniper Networks, Inc.
Label on
the Fan
Module
AIR OUT
In data center deployments, position the switch in such a manner that the
on switch components are next to the cold aisle, and
components are next to the hot aisle.

Figure 7: Air In Airflow Through EX4600 Switch Chassis

Color of Direction of
Fan Airflow in the
Module Fan Module
Juniper Port-to-FRU,
Gold that is, air comes
in through vents
on the end with
ports; air
exhausts out the
end with the
fans (also
known as
front-to-back
airflow).
Chapter 3: Cooling System and Airflow
Power
Supplies
You must install
only power
supplies that
have
AIR OUT
labels in
switches in
which the fan
modules have
AIR OUT labels.
AIR IN
labels on switch
AIR OUT
labels
15