Juniper QFX5120-32C-AFI — Used & Refurbished 100GbE Data Center Switch The Juniper QFX5120-32C-AFI is a high-performance, 1U data center switch designed for modern 40GbE and 100GbE leaf, spine, and collapsed-core architectures. With 32 QSFP28 ports that support 40GbE or 100GbE, plus flexible breakout options, the QFX5120-32C-AFI is ideal for high-density data center fabrics, cloud environments, and service provider deployments that demand predictable throughput and low latency. BrightStar Systems supplies fully tested, used and refurbished QFX5120-32C-AFI switches backed by our 1-Year In-House Warranty, helping you scale 100GbE infrastructure at a fraction of new hardware cost. Juniper QFX5120-32C-AFI Overview The QFX5120-32C-AFI is part of Juniper’s QFX5100/QFX5120 family of fixed-configuration switches, optimized for EVPN-VXLAN fabrics and high-bandwidth data center interconnects. Its 32 QSFP28 ports can operate as 40GbE or 100GbE, or be broken out into multiple lower-speed interfaces, enabling flexible topologies without sacrificing density. 32 × QSFP28 ports supporting 40GbE or 100GbE Port breakout options (for example, 4×10GbE or 4×25GbE per QSFP in supported modes) 1U rackmount form factor for high-density deployments Front-to-back (AFI) airflow for cold-aisle intake, hot-aisle exhaust designs Layer 2 and Layer 3 data center switching with EVPN-VXLAN Automation and telemetry via Junos OS, including support for scripting and common automation tools Redundant, hot-swappable power supplies and fans for high availability Technical Specifications Model: Juniper QFX5120-32C-AFI Ports: 32 × QSFP28 (40GbE/100GbE; breakout-capable where supported) Form Factor: 1U fixed-configuration switch Airflow: AFI (port-side intake, front-to-back airflow) Deployment Roles: Leaf, spine, or high-bandwidth aggregation Features: L2/L3 switching, EVPN-VXLAN, automation and telemetry with Junos OS High Availability: Redundant, hot-swappable power supplies and fans Software: Runs Junos OS with support for automation frameworks and open APIs Ideal Use Cases for QFX5120-32C-AFI Spine switches in medium to large EVPN-VXLAN fabrics Leaf switches in high-density 25/100GbE server access designs (via breakout) Data center aggregation and interconnect roles where 100GbE bandwidth is required Service provider edge or core environments that demand compact, high-throughput switching Upgrade paths from older 40GbE-only platforms to flexible 40/100GbE fabrics Why Buy Refurbished QFX5120-32C-AFI Switches From BrightStar Systems? BrightStar Systems specializes in high-quality, pre-owned Juniper hardware. When you source a QFX5120-32C-AFI from us, you get more than just a switch — you get engineering expertise and a predictable, tested platform. Significant cost savings compared to new hardware In-house testing on every QFX5120-32C-AFI prior to shipment 1-Year In-House Warranty included on all Juniper switches Juniper-focused expertise to assist with model selection, optics, and design questions Fast turnaround times for quotes, configuration, and shipping Related QFX5120 Resources For deeper planning, comparison, and architecture decisions, explore these Juniper QFX resources from BrightStar Systems: QFX5120 Series Comparison Guide Juniper QFX vs EX Series Switches — Comparison Overview Other Juniper QFX5120 Switches We Stock We maintain inventory across the broader QFX5120 family, so you can mix models to match airflow, port density, and role in your fabric: QFX5120-48Y-AFO — 48 × 1/10/25GbE SFP28 8 × 40/100GbE uplinks, AFO airflow QFX5120-48Y-AFI — 48 × 1/10/25GbE SFP28 8 × 40/100GbE uplinks, AFI airflow QFX5120-32C-AFO — 32 × 40/100GbE QSFP28, AFO airflow If you’re unsure whether the QFX5120-32C-AFI is the right fit for your environment, our engineering team can help you compare it with other QFX models and design a cost-effective upgrade path.
