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QFX5100-48S-D-3AFI
QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2...
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Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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.
QFX5100-48S-D-3AFI price is is available on request. Get immediate quote.
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.
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| 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 |
| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
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.
The QFX5100-48S-D-3AFI uses a back-to-front airflow design, drawing cool air from the rear and exhausting it at the front.
It offers redundant, hot-swappable fans and dual DC power supplies to ensure high availability and non-stop operation.
It runs Junos OS, delivering carrier-grade reliability, modularity, and extensive routing, switching, and automation features.
The switch delivers up to 1.44 Tbps of throughput with a forwarding rate of 1.07 Bpps for ultra-low latency performance.
Yes. It supports Juniper Virtual Chassis technology, allowing up to 10 QFX5100 switches to operate as a single logical device.
It supports MLAG, EVPN-VXLAN, advanced QoS, and comprehensive Layer 2/3 features for scalable multi-tenant fabrics.
Management options include CLI, Juniper Network Director, Junos Space, SNMP, and integrated out-of-band Ethernet management ports.
Ideal use cases include top-of-rack and spine deployments in cloud, enterprise, and HPC data centers requiring low latency and high throughput.
It operates in temperatures from 0°C to 45°C, supports up to 90% non-condensing humidity, and meets NEBS Level 3 requirements.
It is UL, CE, FCC, and RoHS compliant, and meets safety, EMC, and environmental standards for global deployment.
Juniper offers a one-year limited warranty with options to upgrade to 3- or 5-year support contracts, including next-business-day hardware replacement.
United States
