EX4400-48F Juniper Networks 4x Uplink 10/25GbE 48 Ports Layer 3 Managed Ethernet Switch

Juniper Networks EX4400-48F 48 Ports Ethernet Switch

The Juniper Networks EX4400-48F 48 Ports 4x Uplink 10/25GbE Layer 3 Managed 1U Rack Mountable Ethernet Switch is engineered for high-performance enterprise and campus network deployments requiring advanced switching intelligence, consistent throughput, and scalable port density. Built with enterprise-grade silicon and optimized forwarding architecture, this switch delivers wire-speed Layer 2 and Layer 3 processing with ultra-low latency and predictable packet handling. Its non-blocking switching fabric ensures that all 48 ports can operate simultaneously at full bandwidth without congestion, enabling seamless data delivery for latency-sensitive workloads and real-time applications.

High-Density Fiber Access Port

The EX4400-48F model provides forty-eight high-speed fiber interfaces designed to support modern optical networking environments. Each port is optimized for high-bandwidth transmission, enabling organizations to deploy scalable aggregation or access-layer architectures. Fiber connectivity ensures extended distance capability, minimal signal degradation, and strong electromagnetic interference resistance, making the switch ideal for enterprise campus backbones, metropolitan access layers, and high-performance computing environments. The port design supports consistent signal integrity, ensuring reliable packet delivery across high-traffic network segments.

Advanced Uplink Capacity

Equipped with four uplink ports supporting 10GbE and 25GbE speeds, the switch provides flexible uplink bandwidth for aggregation or core connectivity. These uplinks allow seamless integration into high-capacity backbone infrastructures while enabling gradual network scaling. Organizations can deploy 10GbE connections for compatibility with existing infrastructure or upgrade to 25GbE for higher throughput demands. This flexibility allows network administrators to adapt bandwidth allocation based on application requirements, traffic patterns, or future expansion plans.

Layer 3 Routing Intelligence and Protocol

The Layer 3 management capabilities integrated into this switch allow it to function not only as an access device but also as a routing platform capable of handling complex network topologies. It supports dynamic routing protocols and advanced traffic forwarding algorithms that enable efficient packet routing across multiple subnets. By integrating routing functionality directly within the switching hardware, the device reduces the need for external routers in certain deployment scenarios, lowering infrastructure costs and simplifying network design.

Hardware-Based Routing Acceleration

Routing operations are accelerated through specialized hardware components that offload processing tasks from the control plane. This architecture ensures that packet forwarding decisions are executed rapidly, minimizing latency and preventing bottlenecks during peak traffic conditions. Hardware-assisted routing also enhances reliability, as deterministic forwarding performance remains consistent regardless of traffic load.

Scalable Routing Tables

The switch supports large routing tables capable of handling extensive IP address ranges and network segments. This scalability allows enterprises to deploy complex segmentation strategies without performance degradation. Large table capacity is particularly beneficial for data-intensive environments where thousands of devices and endpoints require efficient routing and traffic isolation.

Enterprise-Grade Switching Performance

The EX4400-48F platform is designed to deliver predictable performance under demanding workloads. Its switching engine ensures consistent throughput for high-volume traffic streams such as virtualization, cloud computing, unified communications, and large data transfers. The architecture supports advanced buffering techniques that prevent packet loss during traffic bursts while maintaining stable latency levels.

Low Latency

Low latency is essential for applications requiring immediate data delivery, including voice over IP, video conferencing, and real-time analytics. The switch employs optimized forwarding paths and efficient queue management to minimize processing delays. This ensures that time-sensitive packets reach their destination without interruption, maintaining application performance and user experience.

High Throughput Switching Fabric

The switching fabric within the device is engineered to handle high aggregate bandwidth across all interfaces simultaneously. Its internal architecture eliminates oversubscription, ensuring that the full bandwidth of each port is available when required. This capability is critical for modern network environments where multiple high-bandwidth streams operate concurrently.

Robust Security

Security is a core feature integrated into the EX4400-48F switch, providing administrators with comprehensive control over network access and traffic behavior. The platform supports advanced filtering, authentication, and segmentation mechanisms that protect against unauthorized access and potential threats. Built-in traffic inspection features allow the switch to enforce policies at the hardware level, improving efficiency and reducing reliance on external security appliances.

Access Control Enforcement

Granular access control policies can be configured to regulate which devices or users may connect to specific network segments. This ensures that sensitive resources remain protected and that only authorized traffic flows through designated paths. Hardware-based enforcement guarantees that policy execution occurs without impacting overall switching performance.

Traffic Segmentation and Isolation

The switch supports segmentation technologies that divide network traffic into logically isolated domains. Segmentation improves security, optimizes bandwidth usage, and simplifies network management. By isolating traffic types, administrators can prevent broadcast storms, reduce congestion, and enhance overall network stability.

1U Rack Mountable Form Factor

The 1U rack mountable chassis design allows the EX4400-48F to fit seamlessly into standard data center or enterprise racks. Its compact height enables high-density deployments while maintaining efficient airflow and thermal management. The chassis construction is optimized for durability and stability, ensuring consistent operation in mission-critical environments.

Efficient Cooling Architecture

The internal cooling system is engineered to maintain optimal operating temperatures even under sustained high traffic loads. Strategically positioned airflow channels direct cool air across critical components, preventing overheating and ensuring consistent performance. Thermal monitoring sensors continuously evaluate internal temperatures and adjust fan speeds accordingly.

Redundant Power Compatibility

The switch supports redundant power supply configurations that enhance reliability and uptime. In the event of a power module failure, the secondary supply maintains uninterrupted operation, ensuring that network services remain available. This redundancy is essential for environments where downtime can result in operational or financial impact.

Centralized Network Visibility

Comprehensive monitoring tools provide real-time visibility into traffic patterns, port status, and device health metrics. Administrators can analyze performance statistics to identify potential bottlenecks or irregularities. Centralized visibility enhances operational awareness and allows proactive adjustments before issues affect network performance.

Automation-Ready Configuration Framework

The switch is compatible with automated configuration systems that streamline deployment and reduce manual intervention. Automation capabilities allow administrators to apply standardized configurations across multiple devices simultaneously, ensuring consistency and reducing the likelihood of configuration errors.

Scalable Network Deployment Scenarios

The EX4400-48F switch is engineered to support a wide range of deployment environments, from enterprise access layers to aggregation tiers. Its flexible port configuration and uplink options enable organizations to design scalable network architectures that can grow alongside operational demands. Whether deployed as a standalone access switch or integrated into a larger switching fabric, it maintains consistent performance and interoperability.

Campus Network Integration

Within campus environments, the switch can function as a high-capacity access layer device connecting end-user systems, wireless access points, and IoT endpoints. Its Layer 3 capabilities allow it to route traffic locally, reducing dependency on centralized routing infrastructure and improving overall network efficiency.

Data Center Edge Connectivity

At the data center edge, the switch provides high-speed connectivity between servers, storage systems, and aggregation switches. The 10/25GbE uplink interfaces ensure sufficient bandwidth for east-west traffic, virtualization clusters, and high-volume data transfers. This makes it suitable for hybrid cloud environments requiring rapid data movement and minimal latency.

Reliability and Operational Stability

The hardware platform of the EX4400-48F is built for continuous operation in demanding enterprise conditions. Its internal components are selected for durability and long-term reliability, ensuring consistent functionality across extended operating cycles. The switch incorporates fault detection mechanisms that monitor system health and alert administrators to potential issues before they escalate.

Resilient System Architecture

Resiliency features are integrated throughout the system design, including redundant pathways for internal data transfer and fail-safe operational modes. These mechanisms ensure that even in the event of partial component failure, the switch continues to operate with minimal disruption.

Consistent Firmware Stability

The firmware environment is optimized for stability, providing reliable system performance and predictable behavior across configuration changes. Firmware integrity safeguards ensure that updates and patches can be applied without compromising operational continuity.