Juniper QFX5120-48YM - 48 × 1/10/25 GbE SFP28 + 8 × 40/100 GbE QSFP28, 1U, MACsec-Enabled Leaf and Distribution Switch

Juniper QFX5120-48YM is a high-density, MACsec-enabled, 1U data centre switch designed to deliver secure, scalable, and high-performance connectivity for modern enterprise and cloud environments. Equipped with 48 × 1/10/25GbE SFP28 access ports and 8 × 40/100GbE QSFP28 uplinks, it offers flexible deployment options for top-of-rack (ToR), spine-and-leaf, and distribution layer architectures. With its support for EVPN-VXLAN, the QFX5120-48YM enables seamless Layer 2 and Layer 3 network virtualisation, ensuring agility in multi-cloud and hybrid environments. 

Advanced features such as MACsec AES-256 encryption across all ports, automation through Zero-Touch Provisioning (ZTP), streaming telemetry, and integration with orchestration platforms make it ideal for data centre operators, service providers, and enterprises requiring secure, low-latency performance. The QFX5120-48YM combines robust hardware resiliency, hot-swappable redundant power supplies and fans, and a powerful forwarding engine to deliver consistent, line-rate performance for mission-critical workloads including AI/ML clusters, high-frequency trading, and enterprise applications.

KEY FEATURES:

• Total Ports: 48 × 1/10/25GbE SFP28 access ports and 8 × 40/100GbE QSFP28 uplinks
• Port Flexibility: QSFP28 ports support breakout for 4 × 10GbE or 4 × 25GbE connections
• Switching Capacity: 2/4 Tbps (uni/bidirectional)/2 Bpps
• Forwarding Rate: Up to 1.44 Bpps for line-rate forwarding
• CPU: Quad-core Intel processor for advanced control and automation
• System Memory: 16 GB
• Onboard Storage: 100 GB SSD
• Packet Buffer: 16 MB shared packet buffer, optimised for bursty traffic
• MAC Address Table: Supports up to 288,000 MAC addresses
• VLAN Support: Up to 4,094 VLANs for secure segmentation
• Latency: As low as ~800 ns, designed for latency-sensitive applications
• Resiliency: Dual hot-swappable AC or DC power supplies, redundant fan trays, nonstop software upgrades
• Airflow Options: Available in both front-to-back (AFO) and back-to-front (AFI) airflow
• Form Factor: 1U rack-mountable chassis optimised for modern data centres
• Advanced Features: MACsec AES-256 encryption, EVPN-VXLAN, Junos automation, ZTP, streaming telemetry, and cloud integration

TECHNICAL SPECIFICATION:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL AND ENVIRONMENTAL:

ADVANCED FEATURES:

EVPN-VXLAN Fabric Technology:

The QFX5120-48YM integrates standards-based EVPN-VXLAN to extend Layer 2 services across Layer 3 networks, offering a flexible and scalable architecture. This eliminates the traditional challenges of VLAN sprawl, enabling multi-tenancy, workload mobility, and dynamic segmentation. With EVPN-VXLAN, enterprises can deploy leaf-spine architectures that provide predictable performance and simplified automation, supporting modern cloud-driven data centres.

MACsec Security for Sensitive Data:

Security is built-in with IEEE 802.1AE MACsec AES-256 encryption across all 25GbE and 100GbE ports, ensuring line-rate secure data transmission. This protects critical applications such as financial services, defence, and healthcare by preventing eavesdropping, replay attacks, and unauthorised data interception. Combined with RBAC, RADIUS/TACACS+, ACLs, and DDoS protection, the QFX5120-48YM delivers a multi-layered security model to protect infrastructure against internal and external threats.

Automation, Orchestration, and APIs:

The switch is engineered for next-generation automation. With Zero-Touch Provisioning (ZTP), configuration templates, and Junos automation scripts, deployments can be fully automated at scale. Open APIs allow integration with leading orchestration frameworks such as OpenStack, Kubernetes, and Ansible, giving IT teams a consistent, programmable fabric for intent-based networking. This reduces manual intervention, minimises errors, and accelerates service rollouts.

Streaming Telemetry and Advanced Analytics:

Unlike legacy polling methods, the QFX5120-48YM supports real-time streaming telemetry, pushing granular insights into network traffic, flow performance, and system utilisation. This enables operators to shift from reactive monitoring to predictive analytics, proactively identifying issues before they impact users. Integration with third-party monitoring platforms further strengthens operational efficiency and decision-making.

High Availability and Nonstop Resiliency:

Designed for mission-critical environments, the switch features dual hot-swappable AC/DC power supplies and redundant fan trays for continuous uptime. Software innovations such as Nonstop Routing (NSR), Graceful Restart, and In-Service Software Upgrades (ISSU) allow seamless network upgrades without downtime. These capabilities make the QFX5120-48YM an ideal choice for enterprises that cannot afford service disruptions.

Exceptional Performance and Low Latency:

With a switching capacity of 2.16 Tbps and forwarding rate of 1.44 billion packets per second, the QFX5120-48YM is optimised for high-performance workloads. Its ultra-low latency (as low as 550 ns) ensures consistent performance in environments like AI/ML clusters, real-time analytics, and financial trading platforms. This ensures both throughput and deterministic performance under heavy loads.

Scalable Connectivity and Port Flexibility:

Equipped with 48 × 25GbE SFP28 access ports and 8 × 100GbE QSFP28 uplink ports, the switch offers extensive flexibility for scale-out deployments. The uplink ports support breakout into 4 × 25GbE links per 100GbE port, allowing network architects to tailor connectivity as traffic demands evolve. This versatility reduces long-term costs and extends the lifecycle of the infrastructure.

Junos OS Advantage:

Running on Juniper’s Junos OS, the QFX5120-48YM benefits from a proven, stable, and feature-rich operating system that unifies routing, switching, and automation under a single software image. Consistent configuration, automation, and operational behaviour across all Junos-powered devices reduce OPEX and simplify management in large-scale networks.

Cloud-Ready Infrastructure and Edge Support:

The QFX5120-48YM is purpose-built for modern multi-cloud and hybrid architectures. It supports enterprise data centres, service provider networks, and edge computing deployments with secure, automated, and high-bandwidth infrastructure. Its adaptability to new workloads ensures future-proofing for emerging demands like AI-driven applications, container networking, and 5G edge deployments.

ORDERING INFORMATION:

WARRANTY & SUPPORT:

Manufacturers are responsible for warranties, which are based on the purchase date and validity. We make sure the products we sell are delivered on time and in their original condition at Grabnpay. Whether it's physical damage or operational issues, our team will help you find a solution. We help you install, configure, and manage your devices. We'll help you file a warranty claim and guide you every step of the way.

All listed prices reflect standard market rates. Final commercial terms, including volume-based discounts, will be provided based on purchase volume, MOQ, and other applicable criteria. For more information about switches & other accessories, contact our technical support team.