Juniper QFX5220-32CD 400G Switch

The Juniper QFX5220-32CD is a purpose-built 400 Gigabit Ethernet data center switch designed to deliver high-density, high-throughput connectivity for modern leaf and spine architectures. Built on a merchant silicon foundation, it provides 32 ports of native 400GbE (QSFP-DD) in a compact 1U form factor, delivering up to 25.6 Tbps of switching capacity. The platform runs Junos OS, providing consistent operational tooling, automation support via NETCONF/YANG, OpenConfig, and Juniper's Apstra intent-based networking integration.

The QFX5220-32CD-AFO variant ships with airflow oriented front-to-back (AFO), supporting structured hot-aisle/cold-aisle data center deployments. Each QSFP-DD port supports breakout configurations enabling 128 x 100GbE or 256 x 50GbE logical ports, giving operators flexible density scaling without additional hardware. The switch supports advanced Layer 2 and Layer 3 features including EVPN-VXLAN overlay fabrics, which are central to modern multi-tenant data center designs. Hardware-based ECMP, rich Quality of Service (QoS) capabilities, and lossless Ethernet via Priority Flow Control (PFC) and DCBX make it well-suited to storage and HPC traffic alongside standard IP workloads.

Designed for enterprise and cloud-scale environments, the QFX5220-32CD integrates with Juniper's Apstra closed-loop automation platform for intent-based fabric management, enabling consistent configuration, real-time telemetry streaming, and automated anomaly detection across large-scale deployments. Redundant load-sharing power supplies and hot-swappable fan trays support five-nines availability requirements. The combination of port density, forwarding performance, and Junos OS feature depth makes this platform a long-standing choice for spine interconnect, high-performance leaf aggregation, and interconnecting GPU compute clusters.

Ideal for

• High-density spine layer in 3-stage or 5-stage Clos fabric architectures requiring native 400GbE inter-switch links
• Leaf aggregation for GPU/AI compute clusters where 400GbE server-facing ports and lossless RDMA over Converged Ethernet (RoCE) are required
• EVPN-VXLAN multi-tenant data center fabrics providing Layer 2 and Layer 3 overlay segmentation across thousands of endpoints
• High-performance NVMe-oF storage fabric interconnect leveraging PFC and DCBX for lossless block storage traffic
• Enterprise core switching in hyperconverged infrastructure environments demanding high bisectional bandwidth and sub-microsecond latency
• Automated intent-based network fabric deployments managed via Juniper Apstra requiring open telemetry and OpenConfig programmability

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.