Juniper EX4300 Ethernet Switch

Name: Juniper EX4300 Ethernet Switch
Brand: Juniper EX4300 Ethernet Switch

Compact, high-performance stackable Ethernet switching for data centers

hardwareNetwork Switches networkingdata-centerstackable

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Our Verdict

Best for

Enterprise data‑center teams needing stackable 1GbE with 10GbE uplinks

Skip if

Those requiring 40GbE or cheapest basic switches

What is Juniper EX4300 Ethernet Switch?

The Juniper EX4300 is a compact, fixed-configuration Ethernet switch designed for enterprise and data center environments. It delivers high-density 10/100/1000BASE‑T ports with optional 10GbE uplinks, supporting Virtual Chassis technology for simplified management and scalability. Built on Junos OS, the EX4300 offers advanced Layer 2 and Layer 3 features, including Virtual Router Redundancy Protocol (VRRP), MACsec encryption, and extensive automation via NETCONF and REST APIs. Its low power consumption and fanless options make it ideal for high‑density deployments.

SpecificationsAI-estimated

msrp$2,495

weight6.6 lbs (3.0 kg)

warranty3 years limited warranty

dimensions1.75 x 17.3 x 13.6 in (44.5 x 440 x 345 mm)

open source❌ No

connectivity24 or 48 x 1GbE RJ45, optional 4 x 10GbE SFP+ uplinks, optional PoE+

power sourceAC Powered

Key Features of Juniper EX4300 Ethernet Switch

Supports up to 10 switches in a single Virtual Chassis, allowing unified management and a single control plane.

Provides 24 or 48 1GbE ports with optional 4x 10GbE SFP+ uplink modules for high‑speed aggregation.

Runs Junos OS with full Layer 2 and Layer 3 routing, including OSPF, BGP, and static routing.

Offers MACsec encryption on all ports to secure data in transit without impacting performance.

Integrates with Juniper Mist AI for cloud‑based monitoring, analytics, and automated provisioning.

Supports NETCONF, REST, and Ansible for programmatic configuration and zero‑touch deployment.

Fanless power‑efficient models meet strict data‑center energy and acoustic requirements.

Provides optional PoE+ on select models, delivering up to 30W per port for endpoint devices.

Use Cases for Juniper EX4300 Ethernet Switch

Data Center Top-of-Rack

Provides high‑density 1GbE connectivity with 10GbE uplinks for server racks.

Enterprise Campus Edge

Delivers secure, stackable access switching for office buildings.

SDN Testbed

Integrates with automation tools and APIs for software‑defined networking labs.

PoE+ Device Deployment

Supplies power and data to IP phones, wireless APs, and cameras.

Pros & Cons of Juniper EX4300 Ethernet Switch

Pros

Scalable Virtual Chassis simplifies management.
Robust Layer 3 routing capabilities.
Low power consumption and fanless options.
Extensive automation and API support.

Cons

Higher upfront cost compared to basic switches.
Limited to 10GbE uplinks; no 40GbE options.
Configuration complexity for advanced features.

Frequently Asked Questions

Can the EX4300 be powered over Ethernet?

Yes, certain EX4300 models support PoE+ on the access ports.

What is the maximum number of switches in a Virtual Chassis?

Up to 10 switches can be combined into a single Virtual Chassis.

Does the EX4300 support MACsec encryption?

Yes, MACsec is available on all ports for data‑in‑flight security.

Is there a fanless version of the EX4300?

Yes, fanless models are offered for low‑noise, energy‑efficient deployments.

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