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The Juniper QFX5220-128C-AFO is an ultra-high-density, fixed-configuration 400GbE data center switch built for the most demanding spine-and-leaf, AI/ML, and hyperscale fabric environments. Featuring 128 × 400GbE QSFP-DD ports and an airflow-out (AFO) cooling design, this platform is engineered for front-to-back airflow data centers operating at massive scale.
BrightStar Systems supplies fully tested refurbished QFX5220-128C-AFO switches, each backed by our 1-Year In-House Warranty. All systems are professionally validated to ensure reliable operation in production environments.
The QFX5220-128C-AFO delivers extreme 400GbE port density and industry-leading throughput in a fixed-configuration chassis, making it ideal for large-scale spine deployments and ultra-high-bandwidth fabric cores. Designed for next-generation Clos architectures, the platform supports massive east-west traffic volumes while maintaining deterministic low latency.
Running Junos OS and powered by next-generation Broadcom silicon, the QFX5220-128C-AFO provides deep telemetry, advanced automation, and long-term software stability for hyperscale data centers, cloud providers, and service provider backbones.
This model is commonly deployed as a high-radix 400GbE spine supporting hundreds or thousands of 100GbE and 400GbE leaf connections, significantly simplifying fabric design and reducing overall switch count.
For a platform-level overview, see the Juniper QFX5220 Series.
| Model | QFX5220-128C-AFO |
|---|---|
| Ports | 128 × 400GbE QSFP-DD |
| Switching Capacity | 51.2 Tbps |
| Forwarding Rate | ~16 Bpps |
| Form Factor | 2RU |
| Airflow | Airflow Out (AFO) |
| Operating System | Junos OS |
The following resources provide deeper context for evaluating the QFX5220-128C-AFO within a broader Juniper switching strategy:
BrightStar Systems specializes in used and refurbished Juniper networking equipment for enterprise, cloud, and hyperscale data center environments. We support both large-scale expansion projects and hardware lifecycle transitions with tested, production-ready systems.
All QFX5220-128C-AFO switches are tested in-house and include a 1-Year BrightStar Systems Warranty. Hardware validation covers system health, 400GbE port functionality, power supplies, fans, airflow orientation, and overall readiness for production deployment.
