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Name:
QFX5100-48S-D-3AFI
- Description:
- QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2 DC power supplies, back to front airflow
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- 832938069992
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All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
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If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
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QFX5100-48S-D-3AFI Overview
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.
What is the price of QFX5100-48S-D-3AFI?
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Explore more options from Switches or explore other Juniper products.
QFX5100-48S-D-3AFI Specifications
| Product Type | Switch |
| Power Source | Redundant Power Supply / AC Power Supply |
| Layer Supported | Layer 2 / Layer 3 |
| Form Factor | Rack-mount |
| Power Consumption | 330W |
| Number Of Ethernet Ports | 24–48 Ports |
| Number Of Downlink Ports | 48 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Fiber |
| Redundant Power Supply Supported | Yes |
| Manufacturer Part Number | QFX5100-48S-D-3AFI |
| Uplink Configuration | 10G |
| IOS | IP Services |
| POE Support | Non POE |
| SFP Ports | 48 SFP Ports |
| Memory | 4 GB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | N/A |
| Flash Memory | 256 MB |
| Switching Capacity | 1280 Gbps |
| Switching Capacity With Stacking | 2560 Gbps |
| Product Name | Juniper Networks QFX5100-48S-D-3AFI |
| Height | 1.75 inches |
| Width | 19 inches |
| Depth | 17.5 inches |
| Weight | 18 lbs |
QFX5100-48S-D-3AFI Use Case
High-Density Data Center Spine-Leaf with QFX5100-48S-D-3AFI-QFX5100
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.
Telecom Edge Aggregation in Central Office Environments
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.
High-Performance Compute Cluster Fabric
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.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| Depth | 17 inches | 16.5 inches | 18 inches | 17.5 inches | 18.5 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE |
| 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 | 1.7 inches | 1.75 inches | 1.73 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE |
| IOS | IP Services | IP Services | IP Services | IP Services | Junos OS |
| 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-AA-AFI | QFX5100-24Q-D-3AFI | QFX5100-48S-3AFI | QFX5100-48S-D-3AFI | QFX5100-96S-AFO |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 4 GB |
| Number of Downlink Ports | 24 Ports | 24 Ports | 48 Ports | 48 Ports | 96 Ports |
| Number of Ethernet Ports | 12–24 Ports | 24–48 Ports | 24–48 Ports | 24–48 Ports | Over 48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports | 24 QSFP+ ports for data center connectivity and 4 SFP ports for management | N/A | N/A | Fixed configuration with 96 SFP+ downlink ports and 6 QSFP+ uplink ports |
| Power Consumption | 250 W | N/A | 250 W | 330W | 370 W |
| Power Source | Redundant Power Supply / AC Power Supply | Redundant Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper QFX5100-24Q-AA-AFI Switch | Juniper QFX5100-24Q-D-3AFI Data Center Switch | Juniper QFX5100-48S-3AFI | Juniper Networks QFX5100-48S-D-3AFI | Juniper Networks QFX5100-96S-AFO |
| 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 | 4 SFP Ports | 4 SFP Ports | 48 SFP Ports | 48 SFP Ports | 96 x 10GbE SFP+ ports |
| Switching Capacity | 1280 Gbps | 1920 Gbps | 1280 Gbps | 1280 Gbps | 1920 Gbps |
| Switching Capacity with Stacking | N/A | 3840 Gbps | 1280 Gbps | 2560 Gbps | N/A |
| Uplink Configuration | 40G | 40G | 40G | 10G | 40G |
| Weight | 15 lbs | 15 lbs | 15 lbs | 18 lbs | 15 lbs |
| Width | 19 inches | 17.5 inches | 17.5 inches | 19 inches | 17.5 inches |
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Questions & Answers
Q
What is the Juniper QFX5100-48S-D-3AFI?
A
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.
Q
How many SFP+ and QSFP+ ports does the QFX5100-48S-D-3AFI provide?
A
It provides 48 SFP+/SFP ports for 1/10 GbE connectivity and 6 QSFP+ ports for 40 GbE or breakout configurations.
Q
Does the QFX5100-48S-D-3AFI support 40 Gigabit Ethernet?
A
Yes. The six built-in QSFP+ ports support 40 GbE natively or can be configured as four 10 GbE breakout ports each.
Q
What power supplies are included with the QFX5100-48S-D-3AFI?
A
The switch comes with two redundant DC power supplies for continuous operation and hot-swap capability.
Q
What airflow direction does the QFX5100-48S-D-3AFI use?
A
The QFX5100-48S-D-3AFI uses a back-to-front airflow design, drawing cool air from the rear and exhausting it at the front.
Q
What redundancy features are available on the QFX5100-48S-D-3AFI?
A
It offers redundant, hot-swappable fans and dual DC power supplies to ensure high availability and non-stop operation.
Q
Which operating system does the QFX5100-48S-D-3AFI run?
A
It runs Junos OS, delivering carrier-grade reliability, modularity, and extensive routing, switching, and automation features.
Q
What is the switching capacity of the QFX5100-48S-D-3AFI?
A
The switch delivers up to 1.44 Tbps of throughput with a forwarding rate of 1.07 Bpps for ultra-low latency performance.
Q
Does the QFX5100-48S-D-3AFI support Virtual Chassis technology?
A
Yes. It supports Juniper Virtual Chassis technology, allowing up to 10 QFX5100 switches to operate as a single logical device.
Q
What data center features are supported by the QFX5100-48S-D-3AFI?
A
It supports MLAG, EVPN-VXLAN, advanced QoS, and comprehensive Layer 2/3 features for scalable multi-tenant fabrics.
Q
How can the QFX5100-48S-D-3AFI be managed?
A
Management options include CLI, Juniper Network Director, Junos Space, SNMP, and integrated out-of-band Ethernet management ports.
Q
What are the primary use cases for the QFX5100-48S-D-3AFI?
A
Ideal use cases include top-of-rack and spine deployments in cloud, enterprise, and HPC data centers requiring low latency and high throughput.
Q
What are the environmental specifications of the QFX5100-48S-D-3AFI?
A
It operates in temperatures from 0°C to 45°C, supports up to 90% non-condensing humidity, and meets NEBS Level 3 requirements.
Q
What compliance and certifications does the QFX5100-48S-D-3AFI hold?
A
It is UL, CE, FCC, and RoHS compliant, and meets safety, EMC, and environmental standards for global deployment.
Q
What warranty and support options are available for the QFX5100-48S-D-3AFI?
A
Juniper offers a one-year limited warranty with options to upgrade to 3- or 5-year support contracts, including next-business-day hardware replacement.
