Juniper QFX5120-48T - 48 × 1/10 GbE RJ-45 Copper + 6 × 40/100 GbE QSFP+, 1U High-Performance ToR/Campus Switch

Juniper QFX5120-48T is a high-performance 1U switch purpose-built for data centre top-of-rack (ToR), enterprise campus distribution, and aggregation deployments that require high-density copper connectivity. Equipped with 48 × 1/10 GbE RJ-45 copper ports and 6 × 40/100 GbE QSFP28 uplinks, it delivers exceptional throughput and flexibility for modern networks.

Designed with efficiency and reliability in mind, the QFX5120-48T includes redundant hot-swappable power supplies and fan trays, offering high availability and service continuity. Its combination of copper density, high-speed uplinks, automation readiness, and future-proof architecture makes it an ideal platform for enterprise and data centre networks transitioning toward next-generation multi-cloud and virtualised infrastructures.

KEY FEATURES:

• Total Ports: 48 × 1/10GbE RJ-45 copper ports and 6 × 40/100GbE QSFP28 uplink ports
  
• Switching Capacity: Up to 1.08/2.16 Tbps (uni/bidirectional) of L2 and L3
• Forwarding Rate: Up to 1.44 Bpps
• CPU: 2.2 GHz quad-core Intel
• System Memory: Up to 16 GB
• Onboard Storage: SSD up to 100 GB
• Packet Buffer: 16 MB shared packet buffer for consistent traffic handling
• MAC Address Table: Supports up to 288,000 MAC addresses
• VLAN Support: Up to 4,094 VLANs
• Jumbo Frames: Up to 9,216 bytes for efficient handling of large data flows
• Latency: Low-latency forwarding optimised for enterprise and cloud workloads
• Resiliency: Redundant hot-swappable AC or DC power supplies and fan trays
• Airflow Options: Available in both front-to-back (AFO) and back-to-front (AFI) airflow models
• Form Factor: Compact 1U rack-mountable chassis
• Advanced Features: EVPN-VXLAN, MACsec AES-256 encryption, ZTP, automation APIs, and streaming telemetry

TECHNICAL SPECIFICATION:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL AND ENVIRONMENTAL:

ADVANCED FEATURES:

EVPN-VXLAN:

The Juniper QFX5120-48T is built with advanced EVPN-VXLAN support, offering a modern and scalable framework for extending Layer 2 and Layer 3 services across large and distributed networks. It enables seamless workload mobility by allowing virtual machines and applications to move across data centres without reconfiguration. Multi-tenancy is achieved with robust segmentation, making it an excellent choice for enterprises, service providers, and cloud operators that require secure, isolated, and flexible environments. Its standards-based design ensures interoperability with multi-vendor environments, simplifying deployments in hybrid cloud ecosystems.

MACsec Security:

Security is central to the QFX5120-48T, with IEEE 802.1AE MACsec AES-256 encryption supported across all applicable ports. This ensures traffic is encrypted at wire speed without introducing latency. Mission-critical applications in industries such as banking, defence, and healthcare benefit from the added layer of protection, ensuring compliance with stringent regulatory requirements. In addition, the switch integrates fine-grained ACLs, role-based access control (RBAC), and support for authentication protocols such as RADIUS and TACACS+, providing a complete end-to-end security framework.

Automation & Programmability:

The QFX5120-48T is designed for intent-based networking and automation-first operations. With support for Zero-Touch Provisioning (ZTP), new devices can be onboarded automatically with minimal intervention, cutting deployment times dramatically. Junos automation scripting, combined with API programmability, allows integration into DevOps workflows, orchestration systems, and cloud-native platforms like Kubernetes and OpenStack. This means that network changes can be automatically aligned with application requirements, reducing human error and accelerating service agility.

Telemetry & Analytics:

This switch supports real-time streaming telemetry that provides granular and high-frequency visibility into packet flows, system resource utilisation, and network latency. Instead of relying solely on traditional polling methods, telemetry data is continuously streamed to analytics platforms, allowing network operators to detect anomalies faster, forecast capacity requirements, and conduct predictive maintenance. This proactive model shifts IT operations from reactive troubleshooting to intelligent, data-driven optimisation.

High Availability & Resiliency

The hardware design of the QFX5120-48T ensures enterprise-grade resilience with redundant, hot-swappable power supplies and fans that maintain uninterrupted service during maintenance or component replacement. Nonstop routing (NSR) and In-Service Software Upgrades (ISSU) provide operational continuity, even during software updates. For environments where downtime is unacceptable, such as financial services, cloud providers, or healthcare, these features guarantee maximum uptime and seamless service availability.

Performance Optimisation:

Delivering up to 2.16 Tbps of switching capacity and 1.44 billion packets per second forwarding rate, the QFX5120-48T is optimised for bandwidth-intensive and latency-sensitive workloads. Its 16 MB shared packet buffer ensures smooth handling of bursty traffic patterns, while low-latency forwarding (sub-microsecond range) makes it suitable for high-frequency trading, data centre interconnects, and large-scale virtualised workloads. Combined with flexible uplink options (40GbE and 100GbE QSFP28), the switch supports a wide range of application demands.

Scalability & Flexibility:

The switch supports 48 × 1/10GbE RJ-45 copper access ports and 6 × 40/100GbE uplinks, providing an excellent mix of dense access connectivity with high-speed aggregation. With breakout options, operators can transform uplink ports into multiple 10GbE or 25GbE links, ensuring investment protection and smooth scalability. This flexible architecture means that organisations can start with moderate requirements and expand seamlessly as traffic demands grow, avoiding costly forklift upgrades.

Junos OS Advantage:

Running on Junos OS, the QFX5120-48T leverages decades of proven reliability, scalability, and security. Junos provides a consistent software experience across Juniper’s routing, switching, and security platforms, simplifying operations through a unified operational model. With advanced programmability, automation hooks, and a rich feature set that includes EVPN-VXLAN, MACsec, and streaming telemetry, Junos enables operators to deploy agile, secure, and cloud-ready networks.

Cloud & Enterprise Readiness:

The QFX5120-48T is engineered to meet the needs of modern data centres, multi-cloud environments, and enterprise campus networks. Its combination of copper density, high-speed uplinks, advanced automation, and robust security makes it a strategic platform for organisations evolving toward hybrid cloud, edge computing, and AI-driven workloads. Whether used as a top-of-rack switch, aggregation layer, or part of an EVPN-VXLAN fabric, it delivers the performance and flexibility required for the future of networking.

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.