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Very high port density with excellent performance.
QFX5100-96S-AFI
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QFX5100, 96 1/10G SFP+,8 40G QSFP ports, redundant fans and...
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QFX5100-96S-AFI
- Description:
- QFX5100, 96 1/10G SFP+,8 40G QSFP ports, redundant fans and PSUs, AC, Back to Front airflow
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- Brand:
- Juniper
- GTIN:
- 832938069992
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QFX5100-96S-AFI Overview
QFX5100-96S-AFI is a high-performance, rack-mount switch engineered with a scalable architecture that supports complex data center and cloud deployments. Built with advanced silicon and multi-threaded processing, it delivers exceptional performance and low latency while supporting versatile power options and stacking capabilities.
QFX5100-96S-AFI features 96 10G SFP+ ports that enable high-density 10G Ethernet connectivity, making it ideal for spine-leaf architectures and high-performance data center interconnects. The switch is designed for both Layer 2 and Layer 3 operations, ensuring flexibility across use cases that demand high throughput, resilient connectivity, and scalability for growing network demands.
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QFX5100-96S-AFI Specifications
- Product Type
- Switch
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- Number of Ethernet Ports
- Over 48 Ports
- Number of Downlink Ports
- N/A
- Manageable
- Managed
- Ethernet Technology
- 10G
- Media Type Supported
- Fiber
- Redundant Power Supply Supported
- Yes
- Manufacturer Part Number
- QFX5100-96S-AFI
- Uplink Configuration
- 10G
- IOS
- N/A
- POE Support
- Non POE
- SFP Ports
- 96 SFP Ports
- Memory
- 4 GB
- Rack Units
- 1 RU
- Interface Ports
- 10G
- Port/Expansion Slot Details
- N/A
- Flash Memory
- 256 MB
- Switching Capacity
- 2560 Gbps
- Switching Capacity with Stacking
- N/A
- Product Name
- Juniper QFX5100-96S-AFI
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 18 inches
- Weight
- 30 lbs
QFX5100-96S-AFI Use Case
Leaf-Spine Data Center Aggregation for Cloud Services
In a global cloud provider’s leaf-spine data center, the QFX5100-96S-AFI-QFX5100 consolidates 96 1/10G SFP+ server links with 8 40G QSFP uplinks to spine switches. Its redundant fans and PSUs, AC power and back-to-front airflow integrate seamlessly into hot-aisle containment racks. Benefit: Delivers 4× greater port density, 99.999% availability and streamlined cabling for scalable, high-performance cloud workloads.
Ultra-Low Latency Financial Trading Network
A leading trading firm deploys dual QFX5100-96S-AFI-QFX5100 units in active/backup mode to interconnect market data servers via 96 1/10G SFP+ ports and 8 40G QSFP ports to core routers. The switches’ redundant fans and PSUs, AC supply and back-to-front airflow comply with strict data-hall cooling schemes. Benefit: Achieves sub-microsecond latency, 99.999% uptime and regulatory compliance for mission-critical trade execution.
High-Performance AI/ML Cluster Fabric
A research institution implements QFX5100-96S-AFI-QFX5100 as the backbone for GPU-accelerated AI/ML compute clusters, linking 96 10G SFP+ nodes and 8 40G QSFP uplinks. Redundant fans and PSUs with AC power and back-to-front airflow ensure optimal thermal performance under intense workloads. Benefit: Enables 2× faster model training, uninterrupted operation and predictable throughput for large-scale data analytics.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QFX5100-96S-AFI |  QFX5100-96S-DC-AFO |  QFX5100-48S-3AFO |  QFX5100-48S-DC-AFO |  QFX5100-24Q-AA-AFI | |
|---|---|---|---|---|---|
| Depth | 18 inches | 10 inches | 18 inches | 18 inches | 17 inches |
| Ethernet Technology | 10G | 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 | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | N/A | IP Services | IP Services | IP Services | IP Services |
| Interface Ports | 10G | 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 | QFX5100-96S-AFI | QFX5100-96S-DC-AFO | QFX5100-48S-3AFO | QFX5100-48S-DC-AFO | QFX5100-24Q-AA-AFI |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | N/A | N/A | 48 Ports | 48 Ports | 24 Ports |
| Number of Ethernet Ports | Over 48 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 | N/A | 96x 10GbE SFP+ ports | N/A | N/A | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports |
| Power Consumption | N/A | N/A | 350 W | N/A | 250 W |
| Power Source | Redundant Power Supply / AC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper QFX5100-96S-AFI | Juniper QFX5100-96S-DC-AFO Data Center Ethernet Switch | Juniper QFX5100-48S-3AFO Switch | Juniper QFX5100-48S-DC-AFO | 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 | Yes | No | Yes |
| SFP Ports | 96 SFP Ports | 96 SFP Ports | 48 SFP Ports | 48 SFP Ports | 4 SFP Ports |
| Switching Capacity | 2560 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps |
| Switching Capacity with Stacking | N/A | 2560 Gbps | 2560 Gbps | 1280 Gbps | N/A |
| Uplink Configuration | 10G | 40G | 40G | 10G | 40G |
| Weight | 30 lbs | 16 lbs | 14 lbs | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17.5 inches | 19 inches | 17.5 inches | 19 inches |
Reviews & Ratings
C
Colm Ashdown
4
Handles large scale fabrics reliably.
F
Fergus Langdon
4
Airflow-in design works well.
M
Miles Stratford
5
Outstanding throughput and stability.
I
Iain Penfold
4
Ideal for dense leaf roles.
Questions & Answers
What is the Juniper QFX5100-96S-AFI switch?
The QFX5100-96S-AFI is a 1RU data center switch featuring 96 1/10 Gb SFP+ ports, 8 40 Gb QSFP ports, Junos OS, AC power, redundant fans and PSUs, and back-to-front airflow for high-density, low-latency environments.
How many 1/10G and 40G ports does the QFX5100-96S-AFI offer?
This model provides 96 SFP+ ports supporting 1/10 Gb Ethernet and 8 QSFP ports supporting 40 Gb Ethernet, enabling high-density connectivity for TOR, spine, or leaf roles in modern data centers.
What is the total switching capacity and latency of the QFX5100-96S-AFI?
The QFX5100-96S-AFI delivers up to 2.56 Tbps switching capacity and sub-600 ns latency, ensuring wire-speed performance for east-west traffic in demanding cloud and enterprise networks.
Which operating system runs on the QFX5100-96S-AFI?
The switch runs Juniper’s Junos OS, offering a single, modular code base for consistent operations, advanced automation, and comprehensive feature sets including EVPN, VXLAN, MLAG, BGP, and OSPF.
What is the airflow direction of the QFX5100-96S-AFI?
The QFX5100-96S-AFI uses back-to-front airflow, drawing cool air from the rear of the rack and exhausting heated air toward the front, aligning with front-to-back hot aisle/cold aisle data center designs.
Are the fans and power supplies of the QFX5100-96S-AFI redundant?
Yes, this switch includes redundant, hot-swappable fans and dual AC power supplies, minimizing downtime by ensuring continuous operation during individual component failures or maintenance.
Can the QSFP ports on the QFX5100-96S-AFI be used for 4x10G breakout?
Yes, each 40G QSFP port can be configured as four independent 10G SFP+ interfaces via breakout cables, offering flexible connectivity options for aggregation or leaf/spine fabrics.
What network virtualization and segmentation features are supported?
The switch supports EVPN-VXLAN for overlay networking, VRF for segmentation, Virtual Chassis for scaling, and MLAG for active-active uplinks, enabling multi-tenant, scalable, and resilient data center fabrics.
Which management interfaces are available on the QFX5100-96S-AFI?
Management options include one RJ45 console port, one USB Type-A port, one USB Type-C port, one 1 Gb RJ45 out-of-band management port, and in-band management via any Ethernet interface.
Is the QFX5100-96S-AFI hot-swappable?
Yes, the switch supports hot-swappable power supplies, fans, and optics, allowing maintenance or upgrades without service interruption or traffic disruption.
What is the rack unit height and form factor of this switch?
The QFX5100-96S-AFI is a 1RU rack-mountable switch designed for high-density deployments in enterprise and service provider racks or cabinets.
What is the typical power consumption of the QFX5100-96S-AFI?
Typical power draw is approximately 550W under full load, with support for dual AC supplies. Actual consumption varies by traffic, optics, and environmental conditions.
What environmental conditions are required to operate the QFX5100-96S-AFI?
Operating conditions range from 0°C to 40°C (32°F to 104°F) with relative humidity of 5% to 90% non-condensing, per telecom data center standards.
What warranty and support options are available for the QFX5100-96S-AFI?
Juniper provides a limited lifetime warranty on hardware and a 90-day software warranty. Optional Juniper Care or Advanced Care support packages extend coverage for software updates, hardware replacement, and global support.
What deployment roles is the QFX5100-96S-AFI best suited for?
Ideal as a top-of-rack leaf switch or access/aggregation in spine-leaf architectures, delivering high-density 10G/40G connectivity for cloud, virtualization, and high-performance computing environments.
Does the QFX5100-96S-AFI support Zero Touch Provisioning (ZTP)?
Yes, ZTP automates device onboarding by downloading configuration files from a network server on first boot, reducing manual configuration tasks and accelerating deployment timelines.