Juniper QFX5120 Series Hardware Manual page 42

Table 12: Airflow Direction in QFX5120 Switch Models (continued)
Model Number
QFX5120-32C-AFI
QFX5120-48Y-AFO2
QFX5120-48Y-AFI2
Fan Modules and Color of the Fan
Power Supply Module
The switch ships Juniper Azure Blue
with six fan
modules and two
AC power supplies,
each with a label
AIR IN.
The switch ships Juniper Gold
with five fan
modules and two
AC power supplies,
each with a label
AIR OUT.
The switch ships Juniper Azure Blue
with five fan
modules and two
AC power supplies,
each with a label
AIR IN.
Direction of
Airflow in the Fan
Module Power Supplies
Back-to-front—air For switches that
intake to cool the have fan modules
chassis is through with the AIR IN
the vents on the label, you must
rear panel of the install only power
chassis, and hot air supplies that have
exhausts through the AIR IN label.
the vents on the
front panel of the
chassis.
Front-to-back—air For switches that
intake to cool the have fan modules
chassis is through with the AIR OUT
the vents on the label, you must
front panel of the install only power
chassis, and hot air supplies that have
exhausts through the AIR OUT label.
the vents on the
rear panel of the
chassis.
Back-to-front—air For switches that
intake to cool the have fan modules
chassis is through with the AIR IN
the vents on the label, you must
rear panel of the install only power
chassis, and hot air supplies that have
exhausts through the AIR IN label.
the vents on the
front panel of the
chassis.
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