Juniper Networks EX3400-48P Ethernet Switch

Juniper Networks EX3400-48P – Powerful and Scalable 48-Port PoE+ Switch for Business Networks

The Juniper Networks EX3400-48P  Ethernet Switch is a next-generation Layer 3 switch that delivers enterprise-class performance, flexibility, and scalability for demanding business environments. With 48 PoE+ ports and support for 10GbE uplinks, this switch is purpose-built for networks that require high-speed connectivity, simplified management, and advanced Layer 3 routing capabilities.

High-Density PoE+ Connectivity

The Juniper Networks EX3400-48P features 48 auto-sensing 10/100/1000BASE-T ports with full support for IEEE 802.3af and 802.3at PoE+. It can deliver up to 30W per port, making it perfect for powering IP phones, wireless access points, surveillance cameras, and other PoE-enabled devices across your network. This reduces the need for separate power infrastructure, streamlining deployment and lowering operational costs.

Flexible Uplink Options

This switch includes 4 dual-mode uplink ports that support both Gigabit and 10-Gigabit Ethernet through SFP/SFP+ modules. These high-speed uplinks ensure seamless integration with distribution or core switches, enabling fast and reliable data transmission between different segments of the network.

Virtual Chassis Technology

Juniper’s exclusive Virtual Chassis technology allows you to interconnect up to 10 EX3400 switches, managing them as a single logical device. This results in centralized control, simplified configuration, and easier scaling as your network grows. With Virtual Chassis, you can:

• Reduce network complexity

• Eliminate the need for traditional stacking cables

• Achieve higher availability and redundancy

• Simplify firmware upgrades and policy enforcement

Advanced Layer 2 and Layer 3 Features

The Juniper Networks EX3400-48P delivers robust Layer 2 switching and Layer 3 routing features to support modern enterprise applications. Key capabilities include:

Layer 2 Switching:

• VLAN support (802.1Q)

• Rapid Spanning Tree (RSTP), MSTP, and Loop protection

• Link Aggregation Control Protocol (LACP)

• MAC address limiting and port security

Layer 3 Routing:

• Static Routing, RIP, and OSPF

• Policy-Based Routing (PBR)

• PIM for multicast routing

• IPv6 support across routing and management

These features make the EX3400-48P ideal for routing between VLANs, segmenting traffic, and enforcing policies at the network edge or access layer.

Robust Security Capabilities

The EX3400-48P incorporates multiple enterprise-grade security measures:

• 802.1X port-based access control

• Dynamic ARP Inspection (DAI)

• DHCP snooping

• MACsec encryption for secure data transmission

• IP Source Guard and Access Control Lists (ACLs)

These capabilities help prevent unauthorized access, IP spoofing, and broadcast storms, keeping your network secure and stable.

Built on Junos OS

The EX3400 series runs on Junos OS, Juniper’s proven operating system known for reliability and consistency. It supports:

• Powerful CLI for advanced configuration

• Web GUI for simplified management

• REST APIs for automation

• SNMP, NETCONF, and Zero Touch Provisioning (ZTP) for scalable deployments

With Junos OS, you benefit from a consistent software experience across the Juniper portfolio.

Energy Efficient Design

Designed with sustainability in mind, the EX3400-48P supports:

• Energy Efficient Ethernet (EEE)

• Intelligent fan control based on ambient temperature

• Efficient power supplies for reduced consumption

This allows enterprises to lower energy usage while maintaining high performance.

Use Cases for Juniper Networks EX3400-48P :

The EX3400-48P is ideal for:

• Medium to large enterprise access layers

• Office buildings with heavy PoE+ demands

• School and university campus networks

• Environments requiring scalable, secure, and manageable switch infrastructure

Why Choose Juniper Networks EX3400-48P?

Choosing this switch means investing in:

• High port density with full PoE+ support

• Advanced Layer 2/3 features for secure and reliable routing

• Future-ready uplinks with 10GbE capability

• Virtual Chassis scalability

• Easy management and automation with Junos OS

Conclusion

The Juniper Networks EX3400-48P combines performance, flexibility, and intelligent features to support the growing demands of business networks. Whether you’re building out a new infrastructure or upgrading an existing one, this switch delivers the tools needed for a secure, scalable, and energy-efficient environment.

For more details, you can find the datasheet on our website at the following link:

Juniper Networks EX3400-48P Datasheet