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QFX5100-48S-DC-AFO
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QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, re...
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QFX5100-48S-DC-AFO
- Description:
- QFX5100, 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, redundant power supplies, Built in Port to PSU air flow.
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- Brand:
- Juniper
- GTIN:
- 46655505255
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QFX5100-48S-DC-AFO Overview
QFX5100-48S-DC-AFO is a high-performance data center switch built on an optimized architecture that delivers low latency and high throughput for demanding network environments. Designed with a fixed rack-mount chassis, it features a direct current power configuration that ensures efficient, continuous operation while offering a robust set of connectivity options.
QFX5100-48S-DC-AFO provides 48 high-speed SFP ports with flexible uplink configurations and supports stacking to simplify network expansion and management. Its integrated hardware-based packet forwarding, scalable design, and reliable performance make it well suited for data center aggregation, enterprise campus deployments, and cloud-based infrastructures.
QFX5100-48S-DC-AFO price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-48S-DC-AFO for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
QFX5100-48S-DC-AFO Specifications
- Product Type
- Switch
- Power Source
- AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- N/A
- 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
- No
- Manufacturer Part Number
- QFX5100-48S-DC-AFO
- 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
- 1280 Gbps
- Product Name
- Juniper QFX5100-48S-DC-AFO
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 18 inches
- Weight
- 15 lbs
QFX5100-48S-DC-AFO Use Case
High-Density Spine Deployment in Hyperscale Data Centers
In a hyperscale cloud data center, network architects deploy the Juniper QFX5100-48S-DC-AFO-QFX5100 as a spine switch – providing 48 SFP+ leaf uplinks and 6 QSFP+ 40G/100G core links for linear scale-out. Redundant fans and power supplies with built-in port-to-PSU airflow deliver sub-microsecond latency, 99.999% uptime and efficient hot-aisle cooling, enabling automated leaf-spine fabric orchestration at high density.
Low-Latency Financial Trading Network Core
A global financial trading firm implements the QFX5100-48S-DC-AFO-QFX5100 at its exchange colocations to interconnect trading servers via 48 SFP+ low-latency ports and aggregate market data feeds over 6 QSFP+ uplinks. With front-to-back airflow, redundant power supplies and fans, this switch ensures sub-50 µs inter-switch latency and nonstop 24/7 trading execution, maximizing transaction speed and reliability.
5G Edge Aggregation for Telecom Backhaul
A Tier 1 telecom operator uses the QFX5100-48S-DC-AFO-QFX5100 for 5G edge backhaul, leveraging 48 SFP+ ports for distributed radio sites and 6 QSFP+ ports for high-capacity core aggregation. Dual power and fan redundancy plus built-in port-to-PSU airflow guarantee five-nine availability and optimal thermal management in DC-powered telco racks, delivering scalable bandwidth and simplified operations for next-gen mobile services.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QFX5100-48S-DC-AFO |  QFX5100-48S-DC-AFI |  QFX5100-24Q-D-3AFO |  QFX5100-24Q-AA-AFI |  QFX5100-24Q-D-3AFI | |
|---|---|---|---|---|---|
| Depth | 18 inches | 10.7 inches | N/A | 17 inches | 16.5 inches |
| Ethernet Technology | 10/100/1000 | 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 / N/A | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.72 inches | N/A | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | N/A | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 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 | QFX5100-48S-DC-AFO | QFX5100-48S-DC-AFI | QFX5100-24Q-D-3AFO | QFX5100-24Q-AA-AFI | QFX5100-24Q-D-3AFI |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 512 MB | 512 MB | 4 GB | 4 GB |
| Number of Downlink Ports | 48 Ports | 48 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | N/A | N/A | 24 x 40GbE QSFP ports, 4 x 10GbE SFP+ ports | 24 QSFP+ ports for data center connectivity and 4 SFP ports for management |
| Power Consumption | N/A | 300W | N/A | 250 W | N/A |
| Power Source | AC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply / N/A | Redundant Power Supply / AC Power Supply | Redundant Power Supply |
| Product Name | Juniper QFX5100-48S-DC-AFO | Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch | Juniper Networks QFX5100-24Q-D-3AFO Data Center Switch | Juniper QFX5100-24Q-AA-AFI Switch | Juniper QFX5100-24Q-D-3AFI Data Center Switch |
| 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 | Yes | Yes |
| SFP Ports | 48 SFP Ports | 48 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1280 Gbps | 1920 Gbps |
| Switching Capacity with Stacking | 1280 Gbps | N/A | 1280 Gbps | N/A | 3840 Gbps |
| Uplink Configuration | 10G | 40G | 40G | 40G | 40G |
| Weight | 15 lbs | 21 lbs | N/A | 15 lbs | 15 lbs |
| Width | 17.5 inches | 17.17 inches | N/A | 19 inches | 17.5 inches |
Reviews & Ratings
D
Desmond Hale
5
Stable SFP+ switching under load.
V
Victor Cranston
4
Reliable DC powered switch for data centers.
L
Lewis Pembroke
5
Easy deployment and management.
G
Giles Thornton
5
Strong operational stability.
Questions & Answers
What is the QFX5100-48S-DC-AFO switch?
The QFX5100-48S-DC-AFO is a Juniper high-performance Top-of-Rack switch featuring 48 SFP+/SFP ports, 6 QSFP ports, redundant fans, redundant DC power supplies, and built-in port-to-PSU airflow.
How many SFP+ and QSFP ports does the QFX5100-48S-DC-AFO provide?
This model offers 48 SFP+/SFP ports for 1/10 GbE connectivity and 6 QSFP ports for 40 GbE uplinks or breakout support.
What redundancy features are included in the QFX5100-48S-DC-AFO?
It includes hot-swappable redundant fans and dual load-sharing DC power supplies to ensure continuous operation and minimize downtime.
How does the built-in port-to-PSU airflow design benefit the QFX5100-48S-DC-AFO?
The engineered airflow path optimizes cooling by directing intake air from the ports toward the power supplies, enhancing thermal efficiency and reliability.
What operating system does the QFX5100-48S-DC-AFO run?
It runs Junos OS, offering a consistent CLI, automation capabilities, and extensive Layer 2/Layer 3 feature support for modern data centers.
What is the switching capacity and latency of this switch?
The QFX5100-48S-DC-AFO delivers up to 1.44 Tbps of switching capacity and port-to-port latency as low as 600 ns for ultra-low-latency environments.
Can the QFX5100-48S-DC-AFO be used in a Virtual Chassis deployment?
Yes. It supports Juniper Virtual Chassis technology, allowing up to 10 switches to operate as a single logical device for simplified management.
Which transceiver modules are compatible with the QFX5100-48S-DC-AFO?
It is compatible with industry-standard SFP, SFP+, and QSFP+ optical and copper modules, including Juniper-branded and third-party IETF-compliant optics.
What power input does the QFX5100-48S-DC-AFO require?
This model requires DC power inputs (–48 V) and supports dual, load-sharing power supplies for high availability.
How is the QFX5100-48S-DC-AFO managed?
Management is via a dedicated management Ethernet port, out-of-band serial console, SSH, NETCONF, SNMP, and Junos automation scripts.
Does the QFX5100-48S-DC-AFO support advanced data center features?
Yes. It supports VXLAN, EVPN, MPLS, BGP, MLAG, CoS, IGMP–Snooping, and advanced security features for scalable multi-tenant environments.
What are the typical power consumption characteristics?
Power consumption varies by port usage but typically ranges from 150 W (idle) to 550 W (full load), optimized by the efficient DC power architecture.
Is the QFX5100-48S-DC-AFO rack-mountable?
Yes. It ships with standard 1U rack-mount brackets and slides for 19-inch data center racks.
What warranty and support options are available?
Juniper provides a one-year limited warranty with next-business-day hardware replacement; extended support and NBD advance hardware replacement are available.
What deployment scenarios are ideal for the QFX5100-48S-DC-AFO?
It is ideal for Top-of-Rack aggregation in cloud, web-scale, HPC, and enterprise data centers requiring high density, low latency, and redundant DC power.