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QFX5100-48S-D-3AFI
QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2...
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QFX5100-48S-D-3AFI
QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2...
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QFX5100-48S-D-3AFI is a high-performance, fixed-configuration data center switch engineered to deliver robust Layer 2 and Layer 3 capabilities for modern network environments. Built on a resilient architecture, this switch supports redundant power options and a comprehensive port design, ensuring reliable connectivity and streamlined operations in demanding deployments.
QFX5100-48S-D-3AFI offers extensive scalability with advanced stacking features and a high switching capacity, ideal for spine-and-leaf and aggregation deployments across cloud and enterprise data centers. Designed to handle intense workloads and latency-sensitive applications, its versatile port offerings and high-performance fabric make it a trusted solution for mission-critical environments.
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Request bulk order quote for QFX5100-48S-D-3AFI for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
In a hyperscale data center, the QFX5100-48S-D-3AFI-QFX5100 delivers 48 SFP+/SFP ports at leaf switches with 6 QSFP+ spine uplinks. Back-to-front airflow integrates seamlessly with hot-aisle containment, while redundant fans and dual DC power supplies ensure nonstop operation. Outcome: ultra-low latency east-west traffic, seamless 100GbE scalability and five-nines availability for cloud-native workloads.
Telecommunication providers deploy the QFX5100-48S-D-3AFI-QFX5100 in central offices to aggregate 48 x 10GbE SFP/SFP+ subscriber links and 6 x 40GbE QSFP+ backhaul connections. The back-to-front airflow design aligns with NEBS thermal zones, and redundant fans plus 2 DC power supplies meet carrier-grade reliability standards. Outcome: guaranteed SLA-driven uptime, flexible port speeds for next-gen services and simplified network scaling.
Research institutions leverage the QFX5100-48S-D-3AFI-QFX5100 as a top-of-rack switch in HPC clusters, connecting 48 compute nodes over SFP+/SFP and aggregating 6 QSFP+ links to the spine. Back-to-front airflow fits into blade rack designs, while redundant fans and dual DC power modules support uninterrupted simulation runs. Outcome: consistent sub-microsecond latency, 1:1 oversubscription for data-intensive modeling and maximum cluster uptime.
To get the detailed certification, please go to the Compliance Center.
 QFX5100-48S-D-3AFI |  QFX5100-48S-3AFI |  QFX5100-96S-AFO |  QFX5100-24Q-D-3AFI |  QFX5100-24Q-AA-AFI | |
|---|---|---|---|---|---|
| Depth | 17.5 inches | 18 inches | 18.5 inches | 16.5 inches | 17 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10GbE | 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 | 1.7 inches | 1.73 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | Junos OS | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10GbE | 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-D-3AFI | QFX5100-48S-3AFI | QFX5100-96S-AFO | QFX5100-24Q-D-3AFI | QFX5100-24Q-AA-AFI |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 4 GB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 96 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | Over 48 Ports | 24–48 Ports | 12–24 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | N/A | Fixed configuration with 96 SFP+ downlink ports and 6 QSFP+ uplink ports | 24 QSFP+ ports for data center connectivity and 4 SFP ports for management | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports |
| Power Consumption | 330W | 250 W | 370 W | N/A | 250 W |
| Power Source | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper Networks QFX5100-48S-D-3AFI | Juniper QFX5100-48S-3AFI | Juniper Networks QFX5100-96S-AFO | Juniper QFX5100-24Q-D-3AFI Data Center Switch | 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 | Yes | Yes | Yes | Yes |
| SFP Ports | 48 SFP Ports | 48 SFP Ports | 96 x 10GbE SFP+ ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1280 Gbps | 1280 Gbps | 1920 Gbps | 1920 Gbps | 1280 Gbps |
| Switching Capacity with Stacking | 2560 Gbps | 1280 Gbps | N/A | 3840 Gbps | N/A |
| Uplink Configuration | 10G | 40G | 40G | 40G | 40G |
| Weight | 18 lbs | 15 lbs | 15 lbs | 15 lbs | 15 lbs |
| Width | 19 inches | 17.5 inches | 17.5 inches | 17.5 inches | 19 inches |
DC powered switch delivered stable performance.
SFP+ density fits access requirements.
Airflow-in matched our cooling.
Reliable and efficient.
Satisfied with deployment.
The QFX5100-48S-D-3AFI is a high-performance data center switch from Juniper Networks featuring 48 SFP+/SFP ports and 6 QSFP+ ports in a 1 RU form factor.
It provides 48 SFP+/SFP ports for 1/10 GbE connectivity and 6 QSFP+ ports for 40 GbE or breakout configurations.
Yes. The six built-in QSFP+ ports support 40 GbE natively or can be configured as four 10 GbE breakout ports each.
The switch comes with two redundant DC power supplies for continuous operation and hot-swap capability.