Juniper QFX5200 - Connecting DC Power to a QFX5200

CAUTION: Replace a failed power supply with a blank panel or new power supply
within 1 minute of removal to prevent chassis overheang.
CAUTION: A system reboot with Roung Engine FPGA version 7.1 might not
successfully boot the Junos OS soware. In case of a system reboot failure, you need
to power cycle the switch. To check the current FPGA version, issue the show chassis
firmware command.
Connecng DC Power to a QFX5200
IN THIS SECTION
Before You Begin | 116
Connecng DC Power to a QFX5200-32C-DC | 117
Connecng DC Power to a QFX5200-48Y | 120
The QFX5200 is shipped from the factory with two power supplies. Each power supply is a hot-
removable and hot-insertable eld-replaceable unit (FRU) when the second power supply is installed and
running. You can install replacement power supplies in the two slots next to the fan modules without
powering o the switch or disrupng the switching funcon.
WARNING: A DC-powered QFX5200 is intended for installaon only in a restricted
access locaon.
NOTE: The baery returns of the DC power supply must be connected as an isolated DC return
(DC-I).
115