Juniper QFX5120-48Y-AFI2 — Used & Refurbished 25GbE Top-of-Rack Switch The Juniper QFX5120-48Y-AFI2 is a high-performance 1U data center switch offering 48 × 1/10/25GbE SFP28 access ports and 8 × 40/100GbE QSFP28 uplinks. This AFI2 airflow variant provides port-side intake airflow (AFI), making it ideal for data center cold-aisle cooling designs and environments requiring front-to-back intake. BrightStar Systems supplies fully tested, used and refurbished QFX5120-48Y-AFI2 switches, ensuring reliability for high-density server access, EVPN-VXLAN fabrics, and scalable leaf-spine architectures. Juniper QFX5120-48Y-AFI2 Overview The QFX5120-48Y-AFI2 operates as part of Juniper’s high-performance QFX5120 switching family and is purpose-built for modern Layer 2/Layer 3 fabrics and virtualized workloads. It provides consistent low-latency forwarding, wide automation support, and the throughput necessary for cloud-scale east–west traffic patterns. 48 × SFP28 access ports supporting 1/10/25GbE 8 × QSFP /QSFP28 uplink ports supporting 40GbE and 100GbE AFI airflow (port-side intake) for cold-aisle alignment Optimized for EVPN-VXLAN overlays and scalable leaf-spine fabrics Flexible automation via Junos OS, NETCONF, REST, Python, and Ansible Redundant, hot-swappable fans and power supplies Technical Specifications Model: QFX5120-48Y-AFI2 Port Configuration: 48 × 1/10/25GbE SFP28 8 × 40/100GbE QSFP28 Form Factor: 1U fixed-configuration switch Airflow: AFI (port-side intake) Features: EVPN-VXLAN, L2/L3 switching, QoS, telemetry, automation OS: Junos OS Redundancy: Hot-swappable PSUs and fan modules Common Use Cases 25GbE leaf switches in EVPN-VXLAN fabrics High-density virtualized environments requiring predictable throughput Cloud-scale deployments transitioning from 10GbE to 25GbE Enterprises and service providers standardizing on Juniper QFX Data centers requiring AFI airflow for hot/cold aisle alignment Why Choose the QFX5120-48Y-AFI2? The QFX5120-48Y-AFI2 delivers high port density, flexible deployment options, and advanced overlay capabilities. Organizations with cold-aisle intake requirements benefit from the AFI airflow design while retaining the high-performance feature set of the QFX5120 family. QFX5120 Series Comparison & Resources QFX5120 Series Comparison Guide Juniper QFX vs EX Series Comparison Other QFX5120 Models We Stock QFX5120-48Y-AFO QFX5120-48Y-AFO2 QFX5120-48Y-AFI QFX5120-32C-AFO QFX5120-32C-AFI
