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Stable back to front airflow with consistent QSFP performance.
QFX5100-24Q-3AFI
QFX5100, 24 QSFP+ ports, 2 expansion slots, redundant fans,...
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QFX5100-24Q-3AFI
QFX5100, 24 QSFP+ ports, 2 expansion slots, redundant fans,...
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QFX5100-24Q-3AFI is a high-performance data center switch built with a non-blocking, modular architecture that supports both Layer 2 and Layer 3 operations. Its fixed rack-mount form factor combines innovative power options with robust internal AC power supplies and redundant power support while offering 24 high-speed QSFP28 ports designed for flexible 40G/100G uplink configurations.
Engineered for scalability and low-latency performance in modern networks, this switch supports stacking capabilities for seamless network expansion and integration without service interruption. Ideal for top-of-rack deployments and high-demand use cases, the QFX5100-24Q-3AFI delivers reliable performance in data centers while running on Junos OS for advanced routing and management functions.
QFX5100-24Q-3AFI price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-24Q-3AFI for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
In a hyperscale enterprise cloud environment, the QFX5100-24Q-3AFI serves as a spine switch in a leaf-spine topology, aggregating 48 leaf switches over 24 QSFP+ 40 GbE ports and offering two 100 GbE uplinks via expansion slots. Redundant fans and dual AC power supplies ensure five-9s availability, while back-to-front airflow aligns with hot-aisle/cold-aisle practices. Outcome: sub-2 µs latency, linear scaling to 10 K+ servers, and carrier-grade uptime for mission-critical applications.
At a financial exchange colocation, trading firms deploy the QFX5100-24Q-3AFI as an aggregation switch to connect trading servers and market data feeds. With wire-speed 40 GbE switching on 24 QSFP+ ports, two 100 GbE expansion uplinks, and hardware-accelerated forwarding, firms achieve deterministic sub-microsecond latency. Redundant fans and power supplies guarantee continuous operation, and back-to-front airflow matches exchange rack standards. Outcome: maximum order throughput, minimized slippage, and uncompromised trading resilience.
A tier-1 telecom operator uses the QFX5100-24Q-3AFI at its 5G mobile edge to aggregate cell-site traffic. The switch’s 24 QSFP+ ports provide 40 GbE backhaul to macro and small cells, while two 100 GbE expansion slots connect to the regional core. Redundant cooling and power modules deliver SLA-driven reliability, and back-to-front airflow integrates seamlessly into edge racks. Outcome: scalable high-bandwidth aggregation, simplified network growth, and 99.99% service availability for latency-sensitive 5G workloads.
To get the detailed certification, please go to the Compliance Center.
 QFX5100-24Q-3AFI |  QFX5100-96S-DC-AFO |  QFX5100-48S-DC-AFI |  QFX5100-48S-D-3AFI |  QFX5100-24Q-AA-AFI | |
|---|---|---|---|---|---|
| Depth | 18.5 inches | 10 inches | 10.7 inches | 17.5 inches | 17 inches |
| Ethernet Technology | 10/25/40/100GbE | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.75 inches | 1.72 inches | 1.75 inches | 1.75 inches |
| IOS | Junos OS | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10/25/40/100GbE | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Layer Supported | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | QFX5100-24Q-3AFI | QFX5100-96S-DC-AFO | QFX5100-48S-DC-AFI | QFX5100-48S-D-3AFI | QFX5100-24Q-AA-AFI |
| Media Type Supported | Fiber / Copper | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | 24 Ports | N/A | 48 Ports | 48 Ports | 24 Ports |
| Number of Ethernet Ports | 12–24 Ports | Over 48 Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 24 QSFP28 fixed ports | 96x 10GbE SFP+ ports | N/A | N/A | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports |
| Power Consumption | N/A | N/A | 300W | 330W | 250 W |
| Power Source | AC Power Supply | DC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper Networks QFX5100-24Q-3AFI | Juniper QFX5100-96S-DC-AFO Data Center Ethernet Switch | Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch | Juniper Networks QFX5100-48S-D-3AFI | Juniper QFX5100-24Q-AA-AFI Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | Yes | No | No | Yes | Yes |
| SFP Ports | N/A | 96 SFP Ports | 48 SFP Ports | 48 SFP Ports | 4 SFP Ports |
| Switching Capacity | 4800 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps |
| Switching Capacity with Stacking | N/A | 2560 Gbps | N/A | 2560 Gbps | N/A |
| Uplink Configuration | 40G/100G | 40G | 40G | 10G | 40G |
| Weight | 25 lbs | 16 lbs | 21 lbs | 18 lbs | 15 lbs |
| Width | 17.5 inches | 17.5 inches | 17.17 inches | 19 inches | 19 inches |
Stable back to front airflow with consistent QSFP performance.
Works reliably as a spine switch.
Low latency and predictable behavior.
Meets enterprise fabric requirements.
Good value for high speed switching.
The QFX5100-24Q-3AFI features 24 QSFP+ ports supporting native 40 GbE or breakout to up to 96×10 GbE, plus two expansion slots for additional modules.
It delivers line-rate 40 GbE per QSFP+ port, breakout to 4×10 GbE, and supports 1 GbE with appropriate transceivers.
The switch includes two hot-swappable expansion slots for optional QFX5100 uplink and fabric modules.
It offers dual hot-swappable AC power supplies and redundant front-to-back fans for uninterrupted operation.