EX4300-24T Juniper 24-Port Gigabit Switch

Name: EX4300-24T, Juniper 24-Port Gigabit Ethernet Switch with 4x 40G QSFP+ Ports
SKU: EX4300-24T
Price: 2027 USD
Availability: InStock
Rating: 4.8 (23 reviews)

Overview

Juniper EX4300-24T Overview

The Juniper EX4300-24T is a fixed 1U non-PoE Ethernet switch with 24 10/100/1000BASE-T ports, four built-in QSFP+ ports, and a 350W AC power supply. Its QSFP+ ports can operate as network ports or Virtual Chassis ports, supporting up to 10 EX4300 switches in one logical system.

Key Specifications

Access Ports

24 × 10/100/1000BASE-T

QSFP+ Ports

4 × 40GbE QSFP+

Switching Performance

448 Gbps / 333 Mpps

Virtual Chassis

Up to 10 EX4300 switches

Power Supply

350W AC PSU

PoE

Not supported

Figure 1 shows the front-panel layout of the Juniper EX4300 24-port switch.

Juniper EX4300 24-port switch front panel with Mini-USB console port, LCD panel, chassis status LEDs, optional SFP+ uplink module, and Ethernet ports

The official EX4300 front-panel diagram shows the Mini-USB console port, LCD panel controls, chassis status LEDs, optional SFP+ uplink module, and the 24-port network interface area. The optional uplink module is not included in the base EX4300-24T configuration unless separately ordered.

①	Mini-USB console port
②	LCD panel
③	LCD panel Menu button
④	Chassis status LEDs
⑤	LCD panel Enter button
⑥	Optional 4-port 1G/10G SFP+ uplink module
⑦	24 × 10/100/1000BASE-T Ethernet ports

Figure 2 shows the rear-panel layout of a Juniper EX4300 24-port switch.

Juniper EX4300 rear panel with management port, QSFP+ ports, fan modules, AC power supply slots, USB port, and console port

The official EX4300 rear-panel diagram shows the management port, QSFP+ ports, fan modules, AC power supply slots, USB port, and console port. The EX4300-24T ships with two AFO fan modules and one 350W AFO AC power supply by default.

①	RJ-45 management port
②	ESD point
③	Fan module in slot 0
④	Serial number label
⑤	Four QSFP+ ports
⑥	Fan module in slot 1
⑦	AC power supply in slot 0
⑧	AC power supply slot 1
⑨	Power supply slot numbers
⑩	Fan module slot numbers and LEDs
⑪	QSFP+ port LEDs
⑫	USB Type-A port
⑬	RJ-45 console port

Best Fit Applications

Campus and Branch Access

Deploy the EX4300-24T in campus wiring closets, branch offices, and enterprise access networks that require 24 Gigabit copper ports without PoE.

Virtual Chassis Deployments

Use the four built-in QSFP+ ports for Virtual Chassis connections or high-speed network links when multiple EX4300 switches need to operate as one logical system.

Data Center Top-of-Rack Access

Use the fixed 1U chassis for compact top-of-rack or server-access deployments requiring Gigabit copper connectivity, QSFP+ uplinks, and front-to-back airflow.

Why EX4300-24T

Scalable Virtual Chassis Architecture

The four built-in QSFP+ ports can operate as Virtual Chassis ports, allowing up to 10 EX4300 switches to be managed as one logical device.

Field-Replaceable Power and Fan Components

The platform supports hot-removable power supplies and fan modules for improved serviceability and high-availability deployments.

Hardware-Based MACsec Security

IEEE 802.1AE MACsec provides link-layer confidentiality, data integrity, and data-origin authentication with near line-rate hardware encryption support.

Compare Related Models

	EX4300-24T	EX4300-48T	EX4300-24P	EX4300-48P	EX4300-32F
Port Configuration	24 × 10/100/1000BASE-T	48 × 10/100/1000BASE-T	24 × 10/100/1000BASE-T	48 × 10/100/1000BASE-T	32 × 1G SFP
PoE	Not supported	Not supported	24 × PoE+	48 × PoE+	Not supported
QSFP+ / Uplink	4 × QSFP+; optional EX-UM-4X4SFP	4 × QSFP+; optional EX-UM-4X4SFP	4 × QSFP+; optional EX-UM-4X4SFP	4 × QSFP+; optional EX-UM-4X4SFP	4 × SFP+ and 2 × QSFP+
Data Rate	448 Gbps	496 Gbps	448 Gbps	496 Gbps	464 Gbps
Throughput	333 Mpps	369 Mpps	333 Mpps	369 Mpps	345 Mpps
Power Supply	350W AC	350W AC	715W AC	1100W AC	350W AC
Recommended Use	Non-PoE campus, branch, and data center access	High-density non-PoE access	Access points, IP phones, and PoE devices	High-density PoE campus access	Fiber-rich access and aggregation
Not Ideal For	PoE endpoints	Small deployments with limited port needs	Low-power non-PoE deployments	Small offices and non-PoE networks	Copper-only endpoint environments

System Compatible Components

Type	Part Number	Description
Uplink Module	EX-UM-4X4SFP	Four-port 10G SFP+ / 1G SFP uplink module for EX4300. Juniper HCT lists this module as compatible with EX4300. Availability and EOL status should be verified before ordering.

Type	Part Number	Description
Power Supply	JPSU-350-AC-AFO-A	350W AC power supply with AIR OUT front-to-back airflow. One AC power supply ships with the EX4300-24T by default.

Type	Part Number	Description
Fan Module	EX4300-FAN	AIR OUT front-to-back airflow fan module. The EX4300-24T ships with two fan modules by default.

Type	Part Number	Description
Rack Mount Kit	EX-RMK	Rack mount kit listed by Juniper as compatible with EX4300 switches.
Rack Mount Kit	JNP-4PST-RMK-1U-E	Enhanced four-post rack mount kit for supported 1RU EX4300 deployments.

Compatibility Check

Port Type	The EX4300-24T provides 24 non-PoE 10/100/1000BASE-T ports.
QSFP+ Configuration	The four built-in QSFP+ ports are configured as Virtual Chassis ports by default and can also operate as network ports.
Virtual Chassis Scale	A Virtual Chassis can include up to 10 EX4300 switches.
Optional Uplink Module	EX-UM-4X4SFP provides four 10G SFP+ or 1G SFP uplink ports. Confirm availability and software compatibility before ordering.
Power and Airflow	Use matching AIR OUT / AFO power supplies and fan modules. Do not mix AFO and AFI components.
Model Verification	Do not confuse EX4300-24T with EX4300-24T-S. The -S variant does not ship with power supplies or fan modules by default.
Optics and Cables	Verify the exact QSFP+ optics, DAC cables, uplink modules, Junos OS version, and Virtual Chassis configuration before ordering.

Quality Certifications

Specification

Juniper EX4300-24T Specification

Product Information
Product Code	EX4300-24T
Brand	Juniper
Product Type	Fixed 1U Ethernet switch
Operating System	Junos OS
First Junos OS Release	13.2X50-D10
Form Factor	1U fixed platform
Ports and Virtual Chassis
Network Ports	24 × 10/100/1000BASE-T RJ-45 Ethernet ports
PoE	Not supported
Built-in QSFP+ Ports	4 × 40-Gigabit Ethernet QSFP+ ports
QSFP+ Port Function	Network ports or Virtual Chassis ports
Default QSFP+ Configuration	Virtual Chassis ports
Virtual Chassis Scale	Up to 10 EX4300 switches
Supported Virtualization Architectures	Virtual Chassis and Virtual Chassis Fabric
Optional Uplink Module	EX-UM-4X4SFP
Optional Uplink Module Ports	4 × 10G SFP+ or 1G SFP ports
Performance and Switching
Virtual Chassis Backplane Speed	320 Gbps
Packet Switching, Unidirectional	224 Gbps
Packet Switching, Bidirectional	448 Gbps
Layer 2/Layer 3 Throughput	333 Mpps
Quality-of-Service Queues	12 queues per port
MAC Addresses	64,000
Jumbo Frames	9216 bytes
VLAN IDs	4093
IPv4 Unicast Host Routes	32,000
IPv4 Unicast RIB Prefixes	16,000
IPv4 Multicast Routes	16,000
IPv6 Unicast Host Routes	15,000
IPv6 Unicast RIB Prefixes	4,000
IPv6 Multicast Routes	16,000
IPv6 Neighbor Discovery Entries	32,000
Link Aggregation Groups	128
Ports per Link Aggregation Group	16
Traffic Monitoring	sFlow
Management and Hardware
Management Port	1 × RJ-45 management port
Console Ports	1 × RJ-45 console port and 1 × Mini USB Type-B console port
USB Port	1 × Type-A USB port
Management Interfaces	CLI, J-Web, Junos Space, Network Director, and Juniper Routing Director
CPU	1.5 GHz dual-core PowerPC CPU
DRAM	2 GB
Internal Storage	2 GB
Module Slots	1
Power and Cooling
Power Supply Slots	2
Power Supply Shipped by Default	1 × 350W AC power supply
AC Power Supply Model	JPSU-350-AC-AFO-A
Power Supply Airflow	Front-to-back, AIR OUT (AFO)
Power Supply Replacement	Hot-removable and hot-insertable
Fan Modules	2 × EX4300-FAN
Fan Airflow	Front-to-back, AIR OUT (AFO)
Fan Module Replacement	Hot-removable and hot-insertable
Airflow Direction	Front-to-back; air enters through the front and exhausts through the rear
Environmental Specifications
Operating Temperature	32° to 113°F / 0° to 45°C
Storage Temperature	–40° to 158°F / –40° to 70°C
Operating Humidity	10% to 85% noncondensing
Nonoperating Humidity	0% to 95% noncondensing
Operating Altitude	Up to 10,000 ft / 3,048 m
Nonoperating Altitude	Up to 16,000 ft / 4,876 m
Acoustic Noise, Maximum	38.5 dB
Seismic Tolerance	Zone 4
Maintenance Clearance	24 in / 60.96 cm
Physical Specifications
Chassis Dimensions (W × H × D)	17.36 × 1.72 × 16.38 in / 44.09 × 4.37 × 41.61 cm
Published Dimensions (W × H × D)	17.4 × 1.7 × 16.4 in / 44.2 × 4.3 × 41.7 cm
Chassis Depth with FRUs	17.51 in / 44.48 cm
Chassis Weight (Spare)	13 lb / 5.9 kg
Shipping Weight	Not provided in the reviewed official sources
Security and Reliability
Security	IEEE 802.1AE MACsec
MACsec Performance	88 Gbps near line-rate hardware-based encryption on Gigabit Ethernet and 10 Gigabit Ethernet ports
High Availability	Redundant hot-swappable power supplies, field-replaceable fan modules, and GRES in Virtual Chassis configurations
Routing and Switching	Layer 2 and Layer 3 switching and routing
Compatibility Note	Do not mix AIR IN (AFI) and AIR OUT (AFO) power supplies or fan modules in the same chassis

Still unsure about your config? Talk to an engineer →

Quality Certifications

Customer Reviews

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Q&A

Questions & Answers

Are the products sold on router-switch.com authentic?

Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

Does the EX4300 24T support advanced Layer 3 features?

Yes, the EX4300 24T supports advanced Layer 3 features such as OSPF, BGP, and PIM.

Can the EX4300 24T be used in a mixed Virtual Chassis configuration?

Yes, the EX4300 24T can be used in a mixed Virtual Chassis configuration with other EX Series switches.

What is the maximum number of members in a Virtual Chassis configuration?

The maximum number of members in a Virtual Chassis configuration depends on the model of the switch.

Learn More

Are the products sold on router-switch.com authentic?

Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

Does the EX4300 24T support advanced Layer 3 features?

Yes, the EX4300 24T supports advanced Layer 3 features such as OSPF, BGP, and PIM.

Can the EX4300 24T be used in a mixed Virtual Chassis configuration?

Yes, the EX4300 24T can be used in a mixed Virtual Chassis configuration with other EX Series switches.

What is the maximum number of members in a Virtual Chassis configuration?

The maximum number of members in a Virtual Chassis configuration depends on the model of the switch.

Does the EX4300 24T support virtualization technologies?

Yes, the EX4300 24T supports virtualization technologies such as Virtual Chassis and Virtual Chassis Fabric.

Can the EX4300 24T be managed through a web interface?

Yes, the EX4300 24T can be managed through a web interface.

Does the EX4300 24T support fiber optic connectivity?

Yes, the EX4300 24T has two optional 10GbE uplink ports that support fiber optic connectivity.

What is the maximum data rate of the Ethernet ports on the EX4300 24T?

The maximum data rate of the Ethernet ports on the EX4300 24T is 1 Gbps.

What type of Ethernet ports does the EX4300 24T have?

The EX4300 24T has 10/100/1000BASE-T Ethernet ports.

How many ports does the EX4300 24T have?

The EX4300 24T has 24 ports.

What is the form factor of the EX4300 24T?

The EX4300 24T has a 1U form factor.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

Can you use a Cisco SFP in a Juniper switch?

Cisco SFP ( GLC-SX-MM) can be used with EX2200 Juniper Switch.

What are Juniper EX Series switches?

EX Series switches are cloud-ready, high-performance access and distribution/core-layer devices for enterprise branch, campus, and data center networks. With the EX Series, wired access networks don't have to be complex—you can reduce risk and cost without compromising performance, quality, or innovation.

How many ports does a Juniper switch have?

Ports are numbered 0 through 5 on the 6-port Gigabit Ethernet uPIM, 0 through 7 on the 8-port Gigabit Ethernet uPIM, and 0 through 15 on the 16-port Gigabit Ethernet uPIM.

Are Juniper switches good?

Juniper Switches are a great option for new network infrastructure. A complex but also manageable interface. Spent quite sometime learning the interface but was very impressed on the operating system and implementation for hardware and software.

How is the Juniper switch?

Juniper switches deliver agile, reliable, and scalable networks with AI-powered automation and insights.

Are Juniper switches better than Cisco?

Cisco is a tried and true product with loads of support and products. Juniper on the other hand is a great value, providing high scalability and a vast amount of features.

Warranty

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