Ex4300 Overview; Power Supplies - Juniper QFabric QFX3000-G Hardware Documentation

CHAPTER 7

EX4300 Overview

EX4300 Switches Hardware Overview
Copyright © 2018, Juniper Networks, Inc.
EX4300 Switches Hardware Overview on page 137
Field-Replaceable Units in EX4300 Switches on page 153
Chassis Physical Specifications for EX4300 Switches on page 155
Cooling System and Airflow in an EX4300 Switch on page 156
AC Power Supply in EX4300 Switches on page 162
DC Power Supply in EX4300 Switches on page 170
Connecting Earth Ground to an EX Series Switch on page 175
Juniper Networks EX4300 Ethernet Switches provide connectivity for high-density
environments and scalability for growing networks. These switches can be deployed
wherever you need high density of Gigabit Ethernet ports or redundancy. Typically, EX4300
switches are used in large branch offices, campus wiring closets, and data centers. In
data centers, EX4300 switches can be positioned as top-of-rack switches; the top devices
in a rack to provide connectivity for all the devices in the rack and provide options for
optimized airflow (hot aisle/cold aisle).
Three variants of the EX4300 switches are available—24-port, 32-port, and 48-port
switches, with or without PoE+, with AC or DC power supplies, and with different airflow
directions. EX4300 switches also provide uplink ports and a slot for installing an optional
uplink module.
You can manage EX4300 switches except EX4300-48MP and EX4300-48MP-S switches
by using the same interfaces that you use for managing other devices running Juniper
Networks Junos operating system (Junos OS)—the CLI, the J-Web graphical interface,
and Junos Space. You can manage EX4300-48MP and EX4300-48MP-S switches by
using the the CLI.
Software on page 138
EX4300 Switches First View on page 138
Uplink Modules on page 145
Virtual Chassis on page 147
Power Supplies on page 148
137