Juniper QFX5240 - System Software; QFX5240 Component Redundancy

System Soware
The QFX5240 runs the Junos OS Evolved operang system. Junos OS Evolved provides several
capabilies that include Layer 2 and Layer 3 switching, roung, and security services. The Junos OS
Evolved soware is installed on the solid-state drives (SSD) in the switch.
You can manage the switch using the Junos OS Evolved CLI, accessible through the console and out-of-
band management ports on the device.
QFX5240 Component Redundancy
The following hardware components provide redundancy on QFX5240 switches:
• QFX5240 power supply units (PSUs)—The QFX5240 PSUs are hot-removable and hot-insertable
eld-replaceable units (FRUs). The PSUs provide 1+1 redundancy. When installing or replacing the
PSUs, you don't need to shut down the device or interfere with the switching process. See Table 2 on
page 15.
Table 2: QFX5240 Power Supply
Specicaons
PSU Item Specicaon
QFX5240-PWR-AC-AO, 3000 W Maximum output power 3000 W
AC input current rang 16 A maximum
AC input voltage 200 V–240 V AC
AC input line frequency 50/60 Hz
• QFX5240 cooling system—The cooling system consists of four front-to-back (airow out or AFO) fan
modules with each fan module containing 2 rotors. The cooling system oers N+1 redundancy at
rotor level. The fan modules are hot-insertable and hot-removable FRUs.
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