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Excellent spine switch for high speed fabrics.
QFX5100-24Q-3AFO
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QFX5100, 24 QSFP+ ports, 2 expansion slots, redundant fans,...
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QFX5100-24Q-3AFO
- Description:
- QFX5100, 24 QSFP+ ports, 2 expansion slots, redundant fans, 2 AC power supplies, front to back airflow
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- Brand:
- Juniper
- GTIN:
- 11110638588
- Condition:
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QFX5100-24Q-3AFO Overview
QFX5100-24Q-3AFO is a high-performance data center switch designed with a robust, non-blocking architecture to deliver low latency and high throughput in mission-critical environments. It features an AC power supply that ensures reliable operation while its 24 QSFP+ ports offer flexible, high-speed connectivity for modern data centers and enterprise networks.
QFX5100-24Q-3AFO supports stacking via Virtual Chassis technology, enabling seamless scalability and simplified management across multiple units. Its cutting-edge design and superior performance make it ideal for applications ranging from data center interconnects to campus networks where efficient traffic handling and network expansion are essential.
QFX5100-24Q-3AFO price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-24Q-3AFO for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
QFX5100-24Q-3AFO Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Form Factor
- Rack-mount
- Number of Downlink Ports
- 24 Ports
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Redundant Power Supply Supported
- No
- POE Support
- Non POE
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Height
- 1.73 inches
- Layer Supported
- Layer 3
- Flash Memory
- 256 MB
- Width
- 17.5 inches
- Number of Ethernet Ports
- 12–24 Ports
- Power Consumption
- 370W
- IOS
- IP Lite
- Switching Capacity with Stacking
- N/A
- Uplink Configuration
- 40G
- Memory
- 4 GB
- Media Type Supported
- Fiber
- Weight
- 8 lbs
- Depth
- 17 inches
- SFP Ports
- N/A
- Switching Capacity
- 1440 Gbps
- Manufacturer Part Number
- QFX5100-24Q-3AFO
- Port/Expansion Slot Details
- 24 QSFP+ ports
- Product Name
- Juniper QFX5100-24Q-3AFO
QFX5100-24Q-3AFO Use Case
Ultra-Low-Latency Financial Trading Spine with QFX5100-24Q-3AFO
In a global capital markets data center, the QFX5100-24Q-3AFO delivers 24 QSFP+ ports for 100 GbE spine connectivity, front-to-back airflow for hot-aisle containment, redundant fans and dual AC power supplies for zero-downtime trading. Benefit: Achieves sub-microsecond latency and 99.999% availability for high-frequency trading platforms, ensuring millisecond-level order execution and regulatory compliance.
High-Density Enterprise Campus Core Aggregation
A large university campus implements the QFX5100-24Q-3AFO as its core aggregation switch, leveraging 24 QSFP+ ports for seamless 40/100 GbE connectivity to building distribution, two expansion slots for future 400 GbE uplinks, and front-to-back airflow to integrate with hot-aisle cooling. Benefit: Scales to support 10,000+ users with up to 4 Tbps of non-blocking bandwidth and ensures uninterrupted network access through redundant power and fan modules.
Carrier-Grade Edge POP for 100 GbE Services
A regional service provider deploys the QFX5100-24Q-3AFO in its edge point-of-presence to aggregate metro fiber rings. With 24 QSFP+ ports, two hot-swap expansion modules, front-to-back airflow for sealed cabinet designs, and dual AC power supplies, it supports dense 100 GbE peering and customer cross-connects. Benefit: Delivers carrier-class reliability (five-nines uptime), simplified maintenance, and rapid service turn-up for enterprise customers.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QFX5100-24Q-3AFO |  QFX5100-96S-DC-AFO |  QFX5100-24Q-AFI |  QFX5100-48S-DC-AFO |  QFX5100-96S-AFO | |
|---|---|---|---|---|---|
| Depth | 17 inches | 10 inches | 12 inches | 18 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 | 1.73 inches | 1.75 inches | 1.75 inches | 1.75 inches | 1.73 inches |
| IOS | IP Lite | IP Services | IP Lite | IP Services | Junos OS |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10GbE |
| Layer Supported | 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-3AFO | QFX5100-96S-DC-AFO | QFX5100-24Q-AFI | QFX5100-48S-DC-AFO | QFX5100-96S-AFO |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | 24 Ports | N/A | 24 Ports | 48 Ports | 96 Ports |
| Number of Ethernet Ports | 12–24 Ports | Over 48 Ports | 12–24 Ports | 24–48 Ports | Over 48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 24 QSFP+ ports | 96x 10GbE SFP+ ports | 24 QSFP+ ports with 4 dedicated SFP management ports | N/A | Fixed configuration with 96 SFP+ downlink ports and 6 QSFP+ uplink ports |
| Power Consumption | 370W | N/A | 255 W | N/A | 370 W |
| Power Source | AC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper QFX5100-24Q-3AFO | Juniper QFX5100-96S-DC-AFO Data Center Ethernet Switch | Juniper QFX5100-24Q-AFI Data Center Switch | Juniper QFX5100-48S-DC-AFO | 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 | No | No | Yes | No | Yes |
| SFP Ports | N/A | 96 SFP Ports | 24 SFP Ports | 48 SFP Ports | 96 x 10GbE SFP+ ports |
| Switching Capacity | 1440 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1920 Gbps |
| Switching Capacity with Stacking | N/A | 2560 Gbps | 2560 Gbps | 1280 Gbps | N/A |
| Uplink Configuration | 40G | 40G | 40G | 10G | 40G |
| Weight | 8 lbs | 16 lbs | 7 lbs | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
M
Mark Jensen
5
QSFP density met our needs.
V
Victor Grant
5
Stable under heavy east west traffic.
D
Daniel Brooks
5
Good airflow design.
J
James Walker
4
Enterprise ready.
Questions & Answers
What is the port density of the QFX5100-24Q-3AFO?
The QFX5100-24Q-3AFO provides 24 fixed QSFP+ ports, each capable of delivering up to 40 GbE connectivity for high-density environments.
Does the QFX5100-24Q-3AFO support expansion modules?
Yes, it features two front-accessible expansion slots that accommodate optional line cards for increased uplink or monitoring capabilities.
What is the switching capacity and throughput of the QFX5100-24Q-3AFO?
With a 1.28 Tbps switching capacity and up to 960 million packets per second (mpps) of throughput, it delivers consistently low latency for demanding workloads.
Which operating system powers the QFX5100-24Q-3AFO?
The switch runs Juniper’s proven Junos OS, offering a single-image operating environment, predictable scripting, and advanced telemetry.
Does the QFX5100-24Q-3AFO include redundant cooling and power?
Yes, it comes with redundant, hot-swappable fans and dual AC power supplies to ensure continuous operation and ease of maintenance.
How does front-to-back airflow benefit data center deployments?
Front-to-back airflow maintains optimal hot-aisle/cold-aisle segregation, improving cooling efficiency and meeting stringent data center standards.
Can I use breakout cables with the QSFP+ ports?
Yes, each QSFP+ port supports 4×10 GbE breakout configurations, enabling flexible 10 GbE aggregation and connectivity options.
Is the QFX5100-24Q-3AFO compatible with Virtual Chassis technology?
It supports Virtual Chassis, allowing you to connect up to ten QFX5100 switches into a single logical device for simplified management.
What typical power consumption should I expect?
Under full load, the switch consumes approximately 550 W, offering a balance of performance and energy efficiency.
Which network protocols and features are supported?
It supports advanced features including MLAG, EVPN-VXLAN, BGP, OSPF, and MPLS to meet modern data center and campus requirements.
What certifications and compliance standards does it meet?
The QFX5100-24Q-3AFO is RoHS-compliant and meets industry standards such as NEBS Level 3 and FCC Part 15 for reliable deployment.
Which environments are ideal for deploying this switch?
This model is ideal as a top-of-rack or spine switch in hyperscale, cloud, and enterprise data centers requiring high-performance 40 GbE.
How does redundant power improve network uptime?
Dual AC power supplies provide power path redundancy, ensuring continuous operation during a power module failure or maintenance.
What warranty and support options are available?
Juniper offers a one-year limited hardware warranty plus optional Juniper Care support packages for accelerated replacements and 24×7 monitoring.
How do I manage the QFX5100-24Q-3AFO?
You can manage it via Junos CLI, Junos Space Network Management Platform, or automated APIs such as NETCONF and RESTCONF.
Can I stack multiple QFX5100-24Q-3AFO switches?
While it doesn’t support traditional stacking, Virtual Chassis technology allows multiple units to operate as a single logical switch.