Juniper EX 3400 48-port EX3400-48T-AFI 10/100/1000BaseT

Description

Juniper Networks EX3400 Ethernet Switch – High-Performance Layer 2/3 Access Switch

The Juniper EX3400 Ethernet Switch delivers high-performance, flexible, and cost-effective networking for modern enterprise environments, supporting data, voice, and video applications. With Virtual Chassis technology, up to 10 EX3400 switches can be interconnected over uplink ports and managed as a single logical device, providing a scalable, pay-as-you-grow solution for growing network infrastructures.

Integrated with Juniper Mist Cloud Architecture and Mist Wired Assurance, the EX3400 enables AI-powered automation, zero-touch provisioning (ZTP), and improved experiences for connected devices. Ideal for campus access, small data centers, and enterprise wiring closets, this switch ensures reliable, secure, and energy-efficient operation.

Key Features

High-Performance Networking

• Supports 24-port and 48-port models with options for PoE/PoE+

• Fixed 4-port uplinks configurable as 1GbE (SFP) or 10GbE (SFP+)

• Optional 2 x 40GbE QSFP+ uplink ports for high-speed backbone connectivity

• Supports Virtual Chassis technology to link up to 10 switches as a single logical device

Cloud-Ready and Easy Management

• Fully compatible with Juniper Mist Cloud Architecture

• Zero-touch provisioning (ZTP) for simplified deployment

• Centralized software upgrades and monitoring through Juniper Mist Wired Assurance

Flexible Deployment and Cooling

• Front-to-back and back-to-front airflow options for data center and campus deployment

• Compact 1U form factor for flexible rack mounting

• Optional redundant power supplies: 150W, 600W, or 920W AC

Advanced Layer 2/3 Features

• Comprehensive Layer 2 functionality with VLAN, link aggregation, RIP, and static routing

• Layer 3 support via optional Enhanced Feature License: OSPF v2, PIM, VRRP, BFD, IPv6 routing, BGP, MBGP, IS-IS

• Energy Efficient Ethernet (EEE) reduces power consumption without sacrificing performance

Reliability and Scalability

• Enterprise-grade hardware with ECC memory and dual-core 1 GHz CPU

• Store-and-forward switching engine ensures accurate packet delivery

• Digital optical monitoring and cable diagnostics for proactive network maintenance

Technical Specifications

• Manufacturer: Juniper Networks

• Model Series: EX3400

• Ports: 24/48 x 10/100/1000BASE-T + 4 x 1/10GbE SFP/SFP+ + 2 x 40GbE QSFP+ uplinks

• Switching Capacity: Up to 336 Gbps (bidirectional)

• Packet Forwarding Rate: Up to 168 Mpps

• Memory: 2 GB DRAM, 2 GB Flash

• CPU: Dual-core 1 GHz

• Airflow Options: Front-to-back or back-to-front

• Power Supply Options: 150W, 600W, 920W AC

• Form Factor: 1U rack-mountable

• Weight: 10.49–12.65 lb depending on configuration

• Warranty: Limited warranty (check Juniper terms)

Ideal Use Cases

• Enterprise campus access with high-density switching

• Data center access for GbE and 10GbE connectivity

• Small to medium-sized enterprise networks

• Scalable networks requiring Virtual Chassis technology

• PoE/PoE+ deployments for IP phones, cameras, and access points