Understanding Hardware Redundancy Of Qfx5100 Device Components And Functionality; Power Supplies; Table 4: Frus In A Qfx5100 Switch - Juniper QFX5100 Hardware Manual

Table 4: FRUs in a QFX5100 Switch

FRU

Power supplies

Expansion modules
Fan modules
Optical transceivers
Related
Documentation
Understanding Hardware Redundancy of QFX5100 Device Components and
Functionality
Copyright © 2016, Juniper Networks, Inc.
Table 4 on page 13 lists the FRUs for the QFX5100 device and actions to take before
removing them.
Required Action
None.
None
None.
None. We recommend that you disable the interface using the set interfaces
interface-name disable command before you remove the transceiver. See
"Disconnecting a Fiber-Optic Cable from a QFX Series Device" on page
NOTE: If you have a Juniper Care service contract, register any addition,
change, or upgrade of hardware components at
https://www.juniper.net/customers/support/tools/updateinstallbase/
to do so can result in significant delays if you need replacement parts. This
note does not apply if you replace existing components with the same type
of component.
Installing and Removing QFX5100 Device Hardware Components on page 201
The following hardware components provide redundancy on a QFX5100 switch:
Power supplies—The QFX5100 switch has one or two power supplies. Each power
supply provides power to all components in the switch. If two power supplies are
installed, the two power supplies provide full power redundancy to the device. If one
power supply fails or is removed, the second power supply balances the electrical load
without interruption.
To provide power redundancy to the system both power supplies must be installed.
Connect power source feed A to one power supply and power source feed B to the
second power supply.
CAUTION: Do not connect feed A and feed B to the same power supply
input terminal.
Cooling system—The 1 U models of QFX5100 line of switches have five fan modules;
the 2 U QFX5100-96S has three fan modules. If a fan module fails and is unable to
Chapter 1: System Overview
219.
. Failure
13