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Front to back airflow aligned with our cooling strategy.
QFX5100-48S-DC-AFO
QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, re...
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QFX5100-48S-DC-AFO
QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, re...
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QFX5100-48S-DC-AFO is a high-performance data center switch built on an optimized architecture that delivers low latency and high throughput for demanding network environments. Designed with a fixed rack-mount chassis, it features a direct current power configuration that ensures efficient, continuous operation while offering a robust set of connectivity options.
QFX5100-48S-DC-AFO provides 48 high-speed SFP ports with flexible uplink configurations and supports stacking to simplify network expansion and management. Its integrated hardware-based packet forwarding, scalable design, and reliable performance make it well suited for data center aggregation, enterprise campus deployments, and cloud-based infrastructures.
QFX5100-48S-DC-AFO price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-48S-DC-AFO for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
In a hyperscale cloud data center, network architects deploy the Juniper QFX5100-48S-DC-AFO-QFX5100 as a spine switch – providing 48 SFP+ leaf uplinks and 6 QSFP+ 40G/100G core links for linear scale-out. Redundant fans and power supplies with built-in port-to-PSU airflow deliver sub-microsecond latency, 99.999% uptime and efficient hot-aisle cooling, enabling automated leaf-spine fabric orchestration at high density.
A global financial trading firm implements the QFX5100-48S-DC-AFO-QFX5100 at its exchange colocations to interconnect trading servers via 48 SFP+ low-latency ports and aggregate market data feeds over 6 QSFP+ uplinks. With front-to-back airflow, redundant power supplies and fans, this switch ensures sub-50 µs inter-switch latency and nonstop 24/7 trading execution, maximizing transaction speed and reliability.
A Tier 1 telecom operator uses the QFX5100-48S-DC-AFO-QFX5100 for 5G edge backhaul, leveraging 48 SFP+ ports for distributed radio sites and 6 QSFP+ ports for high-capacity core aggregation. Dual power and fan redundancy plus built-in port-to-PSU airflow guarantee five-nine availability and optimal thermal management in DC-powered telco racks, delivering scalable bandwidth and simplified operations for next-gen mobile services.
To get the detailed certification, please go to the Compliance Center.
 QFX5100-48S-DC-AFO |  QFX5100-48S-DC-AFI |  QFX5100-24Q-D-3AFO |  QFX5100-24Q-AA-AFI |  QFX5100-24Q-D-3AFI | |
|---|---|---|---|---|---|
| Depth | 18 inches | 10.7 inches | N/A | 17 inches | 16.5 inches |
| Ethernet Technology | 10/100/1000 | 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 / N/A | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.72 inches | N/A | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | N/A | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 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 | QFX5100-48S-DC-AFO | QFX5100-48S-DC-AFI | QFX5100-24Q-D-3AFO | QFX5100-24Q-AA-AFI | QFX5100-24Q-D-3AFI |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 512 MB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | N/A | N/A | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports | 24 QSFP+ ports for data center connectivity and 4 SFP ports for management |
| Power Consumption | N/A | 300W | N/A | 250 W | N/A |
| Power Source | AC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply / N/A | Redundant Power Supply / AC Power Supply | Redundant Power Supply |
| Product Name | Juniper QFX5100-48S-DC-AFO | Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch | Juniper Networks QFX5100-24Q-D-3AFO Data Center Switch | Juniper QFX5100-24Q-AA-AFI Switch | Juniper QFX5100-24Q-D-3AFI Data Center Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | Yes | Yes | Yes |
| SFP Ports | 48 SFP Ports | 48 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1920 Gbps |
| Switching Capacity with Stacking | 1280 Gbps | N/A | 1280 Gbps | N/A | 3840 Gbps |
| Uplink Configuration | 10G | 40G | 40G | 40G | 40G |
| Weight | 15 lbs | 21 lbs | N/A | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17.17 inches | N/A | 19 inches | 17.5 inches |
Front to back airflow aligned with our cooling strategy.
Stable SFP+ switching under load.
Reliable DC powered switch for data centers.
Easy deployment and management.
Strong operational stability.
The QFX5100-48S-DC-AFO is a Juniper high-performance Top-of-Rack switch featuring 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, redundant DC power supplies, and built-in port-to-PSU airflow.
This model offers 48 SFP+/SFP ports for 1/10 GbE connectivity and 6 QSFP ports for 40 GbE uplinks or breakout support.
It includes hot-swappable redundant fans and dual load-sharing DC power supplies to ensure continuous operation and minimize downtime.
The engineered airflow path optimizes cooling by directing intake air from the ports toward the power supplies, enhancing thermal efficiency and reliability.