Juniper EX4300 Hardware Guide

Software
Juniper Networks EX Series Ethernet Switches run Junos OS, which provides Layer 2 and
Layer 3 switching, routing, and security services. The same Junos OS code base that runs
on EX Series switches also runs on all Juniper Networks M Series, MX Series, and T Series
routers, and SRX Series Services Gateways. For information about installing software
for your switch, see Software Installation .
EX4300 Switches First View
EX4300 switches provide connectivity for high-density Gigabit Ethernet data center
top-of-rack, enterprise, and campus aggregation/core deployments. EX4300 switches
can be used in large branch offices, campus wiring closets, and data centers. In data
centers, these switches can be positioned as the top devices in a rack to provide
connectivity for all devices in the rack and provide options for optimized airflow (hot
aisle/cold aisle).
To provide carrier-class reliability, EX4300 switches include:
•
Dual redundant, load-sharing power supplies that are hot-insertableand hot-removable
field-replaceable units (FRUs).
•
Two fan modules that are field-replaceable units.
•
Redundant Routing Engines in a Virtual Chassis or Virtual Chassis Fabric (VCF)
configuration. This redundancy enables graceful Routing Engine switchover (GRES).
•
Junos OS with its modular design that enables failed system processes to gracefully
restart.
The following EX4300 switches are available:
•
24-Port EX4300 Switches on page 4
•
32-Port EX4300 Switches on page 6
•
48-Port EX4300 Switches on page 7
24-Port EX4300 Switches
The 24-port EX4300 switches—EX4300-24T and EX4300-24P—provide 24 built-in
10/100/1000BASE-T Ethernet network ports and four built-in 40-Gigabit Ethernet quad
small form-factor pluggable plus (QSFP+) ports that can house 40-Gigabit QSFP+
transceivers. All network ports in the EX4300-24P switch are equipped for Power over
Ethernet (PoE+), whereas EX4300-24T has no PoE+ ports. 24-port EX4300 switches
support AC power supply and fan module with front-to-back airflow direction and have
a slot for installing an optional 4-port 10-Gigabit Ethernet SFP+ uplink module, which
has four 10-Gigabit Ethernet small form-factor pluggable plus (SFP+) ports that can
house four 10-gigabit small form-factor pluggable (SFP+) transceivers, four 1-gigabit
small form-factor pluggable (SFP) transceivers, or a combination of four SFP+ and SFP
transceivers.
Figure 1 on page 5 shows the front panel of a 24-port EX4300 switch.
Copyright © 2017, Juniper Networks, Inc.4
EX4300 Switch Hardware Guide

Juniper EX4300 Specifications

General

Model	EX4300
Virtual Chassis	Yes, up to 10 members
Layer 3 Routing	Yes
10GBASE SFP+ Ports	4
Jumbo Frames	9216 bytes
MAC Address Table Size	32, 000
Operating System	Junos OS
Uplink Ports	4 x 10GBASE SFP+
Power Supply	AC or DC options
Operating Temperature	0°C to 45°C (32°F to 113°F)
Input Voltage	100-240V AC
Operating Relative Humidity	5 to 90% RH, non-condensing
Management Options	CLI, Web UI, Junos Space
Redundancy	Yes, power supply and fans
Storage Temperature	-40°F to 158°F (-40°C to 70°C)
Ports	24 or 48