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The Juniper QFX5120-48Y-AFO2 is a high-performance, 1U top-of-rack switch designed for dense 25GbE server access with high-speed 100GbE uplinks. With 48 × 1/10/25GbE SFP28 access ports and 8 × 40/100GbE QSFP28 uplink ports, the QFX5120-48Y-AFO2 is built for modern EVPN-VXLAN fabrics, cloud data centers, and enterprise environments that depend on low-latency, high-throughput east–west traffic.
This AFO2 variant provides port-side exhaust airflow (AFO), making it ideal for hot-aisle containment and traditional front-to-back cooling designs. BrightStar Systems supplies fully tested, used and refurbished QFX5120-48Y-AFO2 switches backed by our in-house warranty support.
The QFX5120-48Y-AFO2 belongs to Juniper’s QFX5120 family of fixed-configuration data center switches optimized for leaf, spine, and collapsed-core architectures. It delivers a flexible mix of 25GbE access and 100GbE uplinks, enabling scalable EVPN-VXLAN fabrics, high-density virtualization, and cloud-native workloads.
The QFX5120-48Y-AFO2 delivers the port density and throughput required by modern leaf-and-spine architectures while supporting familiar Junos OS tooling and automation workflows. Its combination of 25GbE access and 100GbE uplinks makes it an excellent platform for scaling virtualized workloads, containerized applications, and overlay networks.
For environments already standardized on Juniper routing and switching, the QFX5120-48Y-AFO2 integrates seamlessly with other QFX5120, QFX5100, and MX series platforms, simplifying operations and lifecycle management.
Use these resources to compare QFX5120 models and understand where the QFX5120-48Y-AFO2 fits in your architecture:
We also stock related QFX5120 models so you can match airflow, port types, and roles across your fabric:
Q: What is the port configuration of the QFX5120-48Y-AFO2?
A: The switch offers 48 25GbE SFP28 ports and 8 100GbE QSFP28 ports for high-performance networking.
Q: Is the Juniper QFX5120-48Y-AFO2 suitable for cloud environments?
A: With its advanced features like VXLAN, EVPN, and high bandwidth, it is ideal for cloud data centers and SDN (Software-Defined Networking) applications.
Q: What is the airflow direction in the QFX5120-48Y-AFO2?
A: The switch uses front-to-back airflow, optimized for data centers with specific cooling requirements.
Q: Does this model support redundant power supplies?
A: It features dual redundant power supplies to ensure continuous operation and prevent downtime.
Q: What automation tools are supported?
A: The switch runs Junos OS, which integrates with Juniper’s automation framework, supporting tools like Puppet, Ansible, and Chef.
