Figure 24: 1 U Fan Module Used In Qfx5100 Switches; Figure 25: 2 U Fan Module Used In Qfx5100-96S Switches - Juniper QFX5100 Hardware Manual

QFX5100 Switch Hardware Guide
46
Figure 24 on page 46 shows the 1 U fan module and
fan module.

Figure 24: 1 U Fan Module Used in QFX5100 Switches

Figure 25: 2 U Fan Module Used in QFX5100-96S Switches

You remove and replace a fan module from the FRU end of the chassis. The switch
continues to operate for a limited period of time (30 seconds) during the replacement
of the fan module without thermal shutdown.
NOTE: All fan modules must be installed for optimal operation of the switch.
The fan modules are available in two product SKUs that have different airflow
directions—FRU-to-port airflow, indicated on some units by the azure blue color or a
label. FRU-to-port airflow versions of the fan module that have labels are marked
IN . Likewise, port-to-FRU airflow is indicated by either a gold color or the label
. On legacy switches or switches with LCDs, this airflow is also called front-to-back and
back-to-front. Table 15 on page 47
direction of airflow in them:
Figure 25 on page 46
lists the available fan module product SKUs and the
Copyright © 2017, Juniper Networks, Inc.
shows the 2 U
AIR
AIR OUT