What are the port specifications of the QFX5220-32CD-D-AFO?

The QFX5220-32CD-D-AFO features 32 x 400GbE QSFP-DD ports. It is designed for high-density leaf-spine and data center fabric deployments. The QFX series runs Junos OS, providing a consistent and reliable network operating system with advanced automation and programmability features.

What is the switching performance of the QFX5220-32CD-D-AFO?

The QFX5220-32CD-D-AFO is built for line-rate, low-latency switching across all ports. It provides wire-speed forwarding with support for deep buffering and advanced QoS policies. The QFX platform is optimized for east-west data center traffic patterns common in modern cloud and virtualized environments.

What is the airflow direction on the QFX5220-32CD-D-AFO?

The QFX5220-32CD-D-AFO uses front-to-back (AFO, Airflow Out) cooling, pushing air from the port side toward the rear of the chassis. This design is intended for data centers using hot-aisle/cold-aisle containment where cool air enters from the front. This model also supports DC power input, making it suitable for telco and carrier-grade environments.

What software features does the QFX5220-32CD-D-AFO support?

The QFX5220-32CD-D-AFO runs Junos OS, providing a mature and stable network operating system with extensive protocol support. Junos also offers programmable interfaces including NETCONF, gRPC, and OpenConfig for modern network automation and zero-touch provisioning.

Is the QFX5220-32CD-D-AFO available refurbished or pre-owned from BrightStar Systems?

Yes, BrightStar Systems offers the QFX5220-32CD-D-AFO as a certified refurbished switch. Every unit undergoes thorough testing, including full hardware diagnostics, firmware validation, and burn-in testing, before being certified for deployment. BrightStar Systems provides a warranty on all refurbished Juniper equipment, along with technical support and competitive pricing compared to buying new.

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Juniper QFX5220-32CD-D-AFO | 32-Port QSFP-DD 400G Switch

QFX5220-32CD-D-AFO

Condition: Seller Refurbished

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90 Day Resell / 1 Year User

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DESCRIPTION

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DESCRIPTION

Juniper QFX5220-32CD-D-AFO Switch (Refurbished)

The Juniper QFX5220-32CD-D-AFO is a high-performance, fixed-configuration 400GbE data center switch engineered for next-generation spine-and-leaf fabrics, AI/ML clusters, and carrier-grade environments that require DC power and front-to-back airflow. With 32 × 400GbE QSFP-DD ports, DC power inputs, and an airflow-out (AFO) cooling design, this model is optimized for large-scale, high-density deployments.

BrightStar Systems supplies fully tested refurbished QFX5220-32CD-D-AFO switches, each backed by our 1-Year In-House Warranty. All systems are professionally validated to ensure reliable operation in production environments.

Juniper QFX5220-32CD-D-AFO Overview

The QFX5220-32CD-D-AFO delivers high-density 400GbE connectivity in a compact 1RU form factor, making it ideally suited for spine roles in modern EVPN-VXLAN and IP fabric architectures where DC power and front-to-back airflow are required. Powered by next-generation Broadcom silicon and running Junos OS, the platform provides deterministic low latency, massive throughput, and advanced telemetry for mission-critical fabrics.

This model is commonly deployed by service providers, internet exchanges, and hyperscale operators upgrading from 100GbE-class fabrics to 400GbE spine architectures, enabling higher radix designs, reduced oversubscription, and simplified scaling for bandwidth-intensive workloads.

For a platform-level overview, see the Juniper QFX5220 Series.

Key Features & Capabilities

32 × 400GbE QSFP-DD ports for ultra-high-density switching
DC-powered (–48V) design for carrier and service provider environments
Airflow Out (AFO) cooling for front-to-back airflow designs
1RU fixed-configuration form factor
Support for EVPN-VXLAN and IP fabric architectures
Ultra-low-latency, high-throughput forwarding performance
Full Junos OS feature set with automation and telemetry
Breakout support for 2 × 200GbE or 4 × 100GbE per port
Designed for 400GbE spine and high-capacity fabric deployments

Technical Specifications

Model	QFX5220-32CD-D-AFO
Ports	32 × 400GbE QSFP-DD
Switching Capacity	25.6 Tbps
Forwarding Rate	~8 Bpps
Form Factor	1RU
Power	DC (–48V)
Airflow	Airflow Out (AFO)
Operating System	Junos OS

Common Deployment Use Cases

400GbE spine switch in service provider and carrier data centers
AI / ML cluster backbones requiring deterministic, high-bandwidth fabrics
Internet exchange and cloud interconnect environments
400G migration projects from 100GbE spine or aggregation layers

Similar Juniper QFX5220 Models

Juniper QFX5220-32CD-AFO
– 32 × 400GbE QSFP-DD ports with AC power and airflow-out cooling for front-to-back data center designs.
Juniper QFX5220-32CD-AFI
– 32 × 400GbE QSFP-DD ports with AC power and airflow-in cooling for back-to-front rack layouts.
Juniper QFX5220-32CD-D-AFI
– DC-powered variant with airflow-in cooling, designed for carrier and service-provider environments.
Juniper QFX5220-128C-AFO
– Ultra-high-density 128 × 400GbE platform for hyperscale and high-radix spine deployments.

Additional Resources

The following resources provide deeper context for evaluating the QFX5220-32CD-D-AFO within a broader Juniper switching strategy:

In-Depth Look at Juniper QFX Series Switches
– A technical overview of the QFX portfolio, including architecture, deployment models, and feature sets.
Juniper QFX vs EX Series Switches
– A practical comparison explaining when QFX platforms are preferred over EX Series switches.

Buying or Selling Juniper QFX Hardware

BrightStar Systems specializes in used and refurbished Juniper networking equipment for enterprise, service provider, and hyperscale data center environments. We support both expansion projects and hardware lifecycle transitions with tested, production-ready systems.

Warranty & Testing

All QFX5220-32CD-D-AFO switches are tested in-house and include a 1-Year BrightStar Systems Warranty. Hardware validation covers system health, 400GbE port functionality, DC power supplies, fans, airflow orientation, and overall readiness for production deployment.