Juniper QFX5120-32C - 32-Port 100GbE Data Centre Spine and Leaf Switch with EVPN-VXLAN, 1U Compact Design

Juniper QFX5120-32C is a high-density, compact 1U switch designed for modern data centre and cloud deployments. Equipped with 32 × 100GbE QSFP28 ports, it delivers flexible connectivity, supporting breakout options to 40GbE, 25GbE, or 10GbE links. Built on Juniper’s robust Junos OS, it provides advanced Layer 2 and Layer 3 features, including EVPN-VXLAN, making it ideal for spine-and-leaf architectures, large-scale fabrics, and multi-cloud environments.

The QFX5120-32C combines scalability, low latency, and high resiliency, enabling operators to handle demanding workloads such as AI/ML clusters, HPC, and cloud-native applications. With options for front-to-back (AFO) or back-to-front (AFI) airflow, redundant hot-swappable power supplies, and fan trays, it ensures reliable operation in data centre environments.

KEY FEATURES:

• Total Ports: 32 × 100GbE QSFP28 ports
• Port Flexibility: Each QSFP28 port supports breakout into 4 × 25GbE or 4 × 10GbE links
• Switching Capacity: 3.2/6.4 Tbps (uni/bidirectional)
• Forwarding Rate: 2 Bpps
• CPU: 2.2 GHz quad-core Intel
• System Memory: Up to 16 GB 
• Onboard Storage: 64 GB SSD
• Packet Buffer: 42 MB shared packet buffer
• MAC Address Table: Up to 288,000 entries
• VLAN Support: Up to 4,096 VLANs
• Jumbo Frames: Up to 9,216 bytes
• Latency: As low as 800 ns, optimised for ultra-low latency applications
• Resiliency: Dual hot-swappable AC or DC power supplies, redundant fan trays, nonstop software upgrades
• Airflow Options: Front-to-back (AFO) and back-to-front (AFI) airflow
• Form Factor: 1U rack-mountable chassis
• Advanced Features: EVPN-VXLAN, MACsec AES-256 encryption, automation and orchestration, real-time telemetry

TECHNICAL SPECIFICATION:

HARDWARE:

PERFORMANCE:

SECURITY:

MANAGEMENT:

PHYSICAL AND ENVIRONMENTAL:

ADVANCED FEATURES:

EVPN-VXLAN: 

The QFX5120-32C supports full EVPN-VXLAN functionality, enabling Layer 2 networks to extend over Layer 3 infrastructure across the data centre. This allows seamless connectivity between leaf and spine switches, supports multi-tenant deployments, and enables scalable network segmentation without complex manual configurations. Operators can create flexible and dynamic overlays that simplify workload mobility, support large-scale fabrics, and reduce operational complexity.

MACsec Security: 

Equipped with IEEE 802.1AE MACsec AES-256 encryption, the switch secures traffic at wire speed across all supported ports. Sensitive data is protected from interception, eavesdropping, or tampering, making it ideal for mission-critical applications. Combined with role-based access control (RBAC), ACLs, and secure authentication via RADIUS/TACACS+, the QFX5120-32C delivers a robust and comprehensive security foundation for enterprise and cloud environments.

Automation & Orchestration: 

The switch is designed for modern operational models, supporting Zero-Touch Provisioning (ZTP) for rapid deployment with minimal human intervention. Open APIs and Junos automation scripts allow full programmability and integration with automation platforms. Intent-based networking enables administrators to define high-level policies that are automatically translated into configurations, ensuring consistent and error-free deployment. Integration with orchestration platforms like OpenStack, Kubernetes, and other cloud management systems supports hybrid-cloud and containerized application environments.

Real-Time Telemetry & Analytics: 

The QFX5120-32C streams high-frequency telemetry data, providing in-depth insight into traffic flows, latency, system performance, and health metrics. Network operators can detect anomalies, predict congestion, and optimize network resources proactively. Advanced analytics and visualization tools leverage this telemetry to enable predictive operations, helping maintain consistent performance for high-demand workloads such as AI/ML, HPC, and financial services applications.

High Availability & Resiliency: 

Designed for mission-critical environments, the switch features dual hot-swappable power supplies and redundant fan trays, ensuring uninterrupted operation in the event of hardware failure. Nonstop software upgrades allow administrators to apply updates without service disruption. Flexible airflow options, including front-to-back (AFO) or back-to-front (AFI), provide deployment adaptability in diverse data centre cooling architectures.

Performance & Scalability: 

With ultra-low latency (~550 ns), high forwarding rates, and large shared packet buffers (42 MB), the QFX5120-32C delivers consistent, predictable performance even under heavy traffic. Its 32 × 100GbE ports can break out into smaller links, offering flexible connectivity and scalable bandwidth for evolving network topologies. This makes it suitable for latency-sensitive applications, large-scale cloud fabrics, and high-performance computing clusters.

Junos OS Advantage: 

Running on Junos OS, the switch benefits from decades of operational reliability and security. Junos offers a unified feature set across Juniper routing, switching, and security platforms, ensuring consistent policy enforcement and simplified operations. Advanced programmability and automation hooks reduce operational overhead, and integration with existing network management and orchestration platforms streamlines administration in multi-vendor environments.

Cloud-Ready & Future-Proof Design: 

The QFX5120-32C is engineered for cloud-scale and enterprise data centres, supporting modern workloads such as virtualization, multi-cloud deployment, and containerized applications. Its combination of high-density ports, EVPN-VXLAN overlays, automation, MACsec security, and real-time telemetry makes it a strategic investment for future-proofing network infrastructure.

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.