15+ Years of Proven Excellence
Delivering reliable IT hardware solutions since 2009.
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On all on-hand orders placed before 2 pm CST.
Limited Lifetime Warranty
You’ll find warranty coverage on the majority of our hardware.*
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Part Number: EX4400-48F
Description: EX4400, 12x10G SFP+, 36x1G SFP port Fiber Switch with 2x100G uplink/stacking ports – MACsec AES256 capable (optional license sold separately). Optional extension module (sold separately): 4x10G or 4x25G
Category: Juniper Other Switches, Juniper Switches, Switches
15+ Years of Proven Excellence
Delivering reliable IT hardware solutions since 2009.
Same-Day Shipping
On all on-hand orders placed before 2 pm CST.
Limited Lifetime Warranty
You’ll find warranty coverage on the majority of our hardware.*
Terms & Conditions*
The Juniper EX4400-48F delivers exceptional access layer switching capabilities through its advanced 48-port fiber configuration designed specifically for medium distributed enterprise networks and expanding network environments. This robust ethernet switch incorporates a robust hardware foundation that enables platforms to boost network performance while supporting demanding applications across data center networks and campus deployments. The EX4400-48F features comprehensive ethernet ports that provide reliable network connectivity for connected devices while maintaining the performance characteristics needed for modern business applications. With its ability to monitor traffic flows and support flow based telemetry, this access switch provides network administrators with the visibility needed to optimize network performance and ensure maximum uptime across distributed enterprise infrastructures.
Built with Juniper’s virtual chassis technology, the EX4400-48F enables multiple interconnected switches to operate as virtual chassis member switches within a single virtual chassis configuration. This innovative approach allows the switch to leverage Mist AI through Juniper Mist wired assurance capabilities that dramatically simplify operations and reduce management complexity. The EX4400-48F supports virtual chassis connections that enable seamless scaling while maintaining centralized management and consistent policy enforcement. Network administrators benefit from the platform’s ability to simplify switch configuration through automated provisioning and intelligent management features that reduce operational overhead while improving network reliability and performance across the entire access layer infrastructure.
The Juniper EX4400-48F incorporates robust network operating system capabilities and comprehensive security features including media access control security, port access control IEEE standards, and protected extensible authenticated protocol implementations. This ethernet access switch provides advanced security capabilities that enable network administrators to implement granular access controls while maintaining optimal performance for supporting connected devices. The platform supports multiple VLAN registration protocol, virtual router redundancy protocol, and link layer discovery protocol functionality that ensures reliable connectivity and loop prevention. With comprehensive support for transmission control protocol optimization and secure packet capture capabilities, the EX4400-48F enables organizations to maintain network security while providing the performance needed for mission-critical applications.
The EX4400-48F enables organizations to deploy flexible overlay network based architectures that support campus fabric IP CLOS deployments and core and distribution layers integration. This platform seamlessly interconnected with other EX4400 switches including the EX4400-48P, EX4400-24P, and EX4400-48T models, providing consistent management and operational procedures across the entire line of ethernet switches. The switch supports redundant link aggregation connections and aggregation control protocol functionality that enhance network reliability while providing the scalability needed for growing organizations. With its ability to integrate with underlying infrastructure and support traditional network management alongside modern cloud-based approaches, the EX4400-48F provides the flexibility needed to support evolving business requirements.
| Specification | Details |
| Model | EX4400-48F |
| Form Factor | 1RU rack mountable |
| Dimensions (HxWxD) | 1.75″ x 17.4″ x 12.9″ (4.4 x 44.2 x 32.8 cm) |
| Weight | 11 lbs (5.0 kg) |
| Power Supply | Internal AC power supply |
| Power Consumption | 65W maximum |
| Ethernet Ports | 48 x 1GbE SFP/SFP+ fiber ports |
| Uplink Ports | 4 x 10GbE SFP+ |
| Virtual Chassis Ports | 2 dedicated virtual chassis ports |
| Console Port | 1 x RJ-45, 1 x USB |
| Management Port | 1 x 10/100/1000 Ethernet |
| Switching Capacity | 176 Gbps |
| Forwarding Rate | 131 Mpps |
| MAC Address Table | 32,000 entries |
| Temperature Sensor | Configuration backup system |
| Operating Temperature | 0°C to 45°C |
| Storage Temperature | -40°C to 70°C |
The EX4400-48F maximizes fiber connectivity density while maintaining efficient power consumption and compact form factor. The platform’s specifications enable reliable deployment across various access layer applications where fiber connectivity is required.
Running Junos OS, the EX4400-48F provides comprehensive Layer 2 and Layer 3 switching capabilities optimized for access layer switching applications in enterprise environments. Key software features include:
The platform integrates seamlessly with Juniper Mist wired assurance for cloud-based management and AI-driven network optimization. This integration enables network administrators to leverage advanced analytics and automation capabilities that simplify operations while improving network performance.
The Juniper EX4400-48F delivers exceptional performance through its 176 Gbps switching capacity while supporting comprehensive virtual chassis connections that enable seamless scaling across expanding network environments. The platform’s virtual chassis configuration allows multiple switches to act as remaining switch elements within a unified management domain.
When compared to other models in the EX4400 line of ethernet switches, the EX4400-48F provides fiber-specific connectivity that complements the copper-focused EX4400-48T and PoE-enabled EX4400-48P variants. While other EX4400 switches offer different connectivity options, the 48F model delivers the fiber density needed for applications requiring longer-distance connectivity or electromagnetic interference immunity.
The EX4400-48F supports comprehensive integration with data center networks and campus fabric architectures through its advanced protocol support and flexible overlay network capabilities. The platform provides robust support for virtual router redundancy protocol, aggregation control protocol, and other essential networking protocols.
The switch enables organizations to support secure packet capture, implement comprehensive access controls, and maintain network connectivity across diverse deployment scenarios. Integration with core and distribution layers is facilitated through standard ethernet protocols and comprehensive management interfaces that ensure seamless operation across multi-vendor environments.
The Juniper EX4400-48F provides 48 SFP/SFP+ fiber ports that enable flexible connectivity over various distances while supporting both 1GbE and 10GbE speeds based on transceiver selection. The fiber connectivity eliminates electromagnetic interference concerns and enables longer cable runs compared to copper alternatives, making it ideal for environments where devices are distributed across large areas. The platform’s robust hardware foundation and comprehensive ethernet switches capabilities ensure reliable performance while providing the fiber density needed for demanding access layer applications.
The EX4400-48F supports Juniper’s virtual chassis technology that enables multiple switches to operate as virtual chassis member switches within a single management domain, dramatically simplifying operations across expanding network environments. This approach allows network administrators to manage up to 10 interconnected switches through a single virtual chassis configuration, reducing operational complexity while providing seamless scaling capabilities. The virtual chassis connections provide redundant link aggregation connections that enhance reliability while enabling centralized policy enforcement and consistent configuration across all member switches.
The EX4400-48F integrates seamlessly with Juniper Mist wired assurance to provide AI-driven network management and optimization capabilities that dramatically reduce manual configuration requirements. This integration enables the switch to leverage Mist AI for automated troubleshooting, performance optimization, and proactive issue identification that improves network reliability while reducing operational overhead. The cloud-based management approach provides comprehensive visibility into traffic flows and network performance while enabling network administrators to implement consistent policies across distributed deployments.
The EX4400-48F incorporates comprehensive security capabilities including media access control security, port access control IEEE 802.1X authentication, and protected extensible authenticated protocol support that provide granular access control for connected devices. The platform supports secure packet capture capabilities and advanced monitoring features that enable network administrators to identify and respond to security threats while maintaining optimal network performance. These security implementations work seamlessly with the underlying infrastructure to ensure that enterprise networks maintain appropriate access controls while supporting diverse device types and user requirements.
The EX4400-48F provides 48 fiber SFP/SFP+ ports optimized for environments requiring fiber connectivity, while other models like the EX4400-48T offer copper connectivity and the EX4400-48P provides PoE access ports delivering power to connected PoE devices. The fiber-based EX4400-48F is ideal for applications requiring longer cable runs, electromagnetic interference immunity, or integration with existing fiber infrastructure, whereas copper variants support connected PoE powered devices or traditional ethernet connectivity. All models in the EX4400 line of ethernet switches share common software capabilities and virtual chassis technology while providing different physical connectivity options to meet specific deployment requirements.
At Network Republic, our end-user accounts are covered by a 1-Year Warranty on all hardware—whether New, New Open Box, New Pull, Refurbished, or Refurbished by Manufacturer —from the date of delivery. This warranty covers hardware defects under normal use and allows for repair, replacement, or in-house credit at our discretion.
For resellers and wholesale purchases, we offer a 30-Day Warranty limited strictly to functional issues or defects upon arrival, including dead-on-arrival (DOA) items; it does not apply to problems arising after prolonged use. Resellers are responsible for inspecting and testing products within the 30-day window. This warranty excludes accidental damage, misuse, cosmetic wear, third-party modifications, and software-related issues unrelated to hardware failure. Check out our full warranty policy here.
Software licenses are not covered under the standard return and warranty policies and need to be activated on the hardware within 7 days of receipt. Any issues need to be reported immediately, within 10 days, so we can issue an exchange. Under no circumstances will refunds be issued for software licenses.
Our team of professionals are experts in networking hardware configurations and can assist you at any time during your purchasing process. We always recommend great price-performance alternatives based on current market price and availability. In need of assistance or looking for a specific part number? Request a quote today or chat with one of our IT specialists.

