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Reliable SFP+ switching with consistent airflow.
QFX5100-48S-3AFO
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QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2...
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QFX5100-48S-3AFO
- Description:
- QFX5100, 48 SFP+/SFP ports, 6 QSFP+ ports, redundant fans, 2 AC power supplies, front to back airflow
- Rating:
Added to cart 28 times recently
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In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 832938069961
- Condition:
- List Price:
$2,838.00
- Price:
$2,410.0015.1% off
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1
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QFX5100-48S-3AFO Overview
QFX5100-48S-3AFO is a high-performance data center switch built on a robust, ASIC-based architecture that ensures reliable, non-blocking throughput and low latency for modern networking environments. Designed with scalability in mind, it offers flexible power options including redundant power supplies, a rack-mount form factor, and a range of high-speed ports to support mission-critical, high-density applications.
This switch features 48 SFP+ ports alongside dedicated uplink configurations that deliver 40G connectivity for efficient network aggregation. With stacking capabilities that extend its switching capacity and support for Layer 2 and Layer 3 operations, QFX5100-48S-3AFO is ideal for deployments in data centers, cloud infrastructures, enterprise campus networks, and virtualization environments.
QFX5100-48S-3AFO price is is available on request. Get immediate quote.
Request bulk order quote for QFX5100-48S-3AFO for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
QFX5100-48S-3AFO Specifications
- Product Type
- Switch
- Brand
- Juniper
- Power Source
- Redundant Power Supply / AC Power Supply
- Layer Supported
- Layer 2 / Layer 3
- Form Factor
- Rack-mount
- Power Consumption
- 350 W
- 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-3AFO
- Uplink Configuration
- 40G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- 48 SFP Ports
- Memory
- 512 MB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Flash Memory
- 256 MB
- Switching Capacity
- 1280 Gbps
- Switching Capacity with Stacking
- 2560 Gbps
- Product Name
- Juniper QFX5100-48S-3AFO Switch
- Height
- 1.75 inches
- Width
- 19 inches
- Depth
- 18 inches
- Weight
- 14 lbs
Quality Certifications
Product Comparison Table 
| QFX5100-48S-3AFO |  QFX5100-96S-AFO |  QFX5100-48S-3AFI |  QFX5100-48S-DC-AFI |  QFX5100-48T-AFO | |
|---|---|---|---|---|---|
| Depth | 18 inches | 18.5 inches | 18 inches | 10.7 inches | 17.5 inches |
| Ethernet Technology | 10/100/1000 | 10GbE | 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 | 1.73 inches | 1.7 inches | 1.72 inches | 1.75 inches |
| IOS | IP Services | Junos OS | IP Services | IP Services | IP Services |
| Interface Ports | 10/100/1000 | 10GbE | 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-3AFO | QFX5100-96S-AFO | QFX5100-48S-3AFI | QFX5100-48S-DC-AFI | QFX5100-48T-AFO |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Twisted Pair |
| Memory | 512 MB | 4 GB | 4 GB | 512 MB | 4 GB |
| Number of Ethernet Ports | 24–48 Ports | Over 48 Ports | 24–48 Ports | 24–48 Ports | 24–48 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 | DC Power Supply | AC Power Supply |
| Product Name | Juniper QFX5100-48S-3AFO Switch | Juniper Networks QFX5100-96S-AFO | Juniper QFX5100-48S-3AFI | Juniper Networks QFX5100-48S-DC-AFI Datacenter Switch | Juniper QFX5100-48T-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 | No | No |
| SFP Ports | 48 SFP Ports | 96 x 10GbE SFP+ ports | 48 SFP Ports | 48 SFP Ports | 2 SFP+ Ports |
| Switching Capacity | 1280 Gbps | 1920 Gbps | 1280 Gbps | 1280 Gbps | 720 Gbps |
| Uplink Configuration | 40G | 40G | 40G | 40G | 10G |
| Weight | 14 lbs | 15 lbs | 15 lbs | 21 lbs | 12 lbs |
| Width | 19 inches | 17.5 inches | 17.5 inches | 17.17 inches | 17.5 inches |
Reviews & Ratings
P
Patrick Elms
5
Good performance for leaf switches.
V
Vaughn Mercer
4
Stable operation since install.
R
Ronald Whitby
5
Easy to manage and configure.
S
Stewart Haines
4
Meets expectations.
Questions & Answers
What is the Juniper QFX5100-48S-3AFO switch?
The QFX5100-48S-3AFO is a high-performance data center switch featuring 48 SFP+/SFP ports, 6 QSFP+ ports, front-to-back airflow, redundant fans, and dual AC power supplies.
How many SFP+ and QSFP+ ports does the QFX5100-48S-3AFO offer?
It offers 48 SFP+/SFP ports for 1/10GbE connectivity and 6 QSFP+ ports for 40GbE uplinks, supporting flexible breakout configurations.
What airflow configuration does the QFX5100-48S-3AFO use?
It employs front-to-back airflow optimized for hot-aisle/cold-aisle containment in modern data center deployments.
Does the QFX5100-48S-3AFO include redundant fans?
Yes, it features hot-swappable, redundant fans to ensure continuous cooling and high availability.
Are there redundant power supplies in the QFX5100-48S-3AFO?
Yes, it ships with two hot-swappable AC power supplies configured for N+1 redundancy.
Which operating system powers the QFX5100-48S-3AFO?
The switch runs Juniper’s Junos OS, delivering advanced L2/L3 features, security, and automation.
What is the total switching capacity of the QFX5100-48S-3AFO?
The QFX5100-48S-3AFO provides up to 1.44 Tbps of switching capacity and 1.44 Bpps line-rate forwarding performance.
What latency performance does the QFX5100-48S-3AFO deliver?
It delivers microsecond-class latency (<3 µs) at full load for all packet sizes.
Does the QFX5100-48S-3AFO support virtualization and EVPN-VXLAN?
Yes, it supports EVPN-VXLAN, VRF, and logical systems for multi-tenant network virtualization.
What network automation features does the QFX5100-48S-3AFO support?
It supports Junos Automation Scripts, Junos PyEZ, Ansible, Puppet, SaltStack, and Junos Telemetry Interface for CI/CD workflows.
What management and telemetry options are available?
It provides an out-of-band management port, USB console, SNMP, REST APIs, and streaming telemetry via JTI.
What are the typical use cases for the QFX5100-48S-3AFO?
Ideal for leaf-spine architectures, server access, high-density aggregation, and cloud data center deployments.
How energy efficient is the QFX5100-48S-3AFO?
It consumes around 400 W under full load and supports IEEE 802.3az Energy Efficient Ethernet to lower OPEX.
What warranty and support options are available for the QFX5100-48S-3AFO?
Juniper offers a limited lifetime hardware warranty and optional Juniper Care service for 24×7 technical support and advance replacement.
How can I integrate the QFX5100-48S-3AFO into my data center network?
It seamlessly integrates into EVPN-VXLAN and MLAG topologies over Junos OS, enabling scalable, resilient leaf-spine designs.
Where can I purchase the QFX5100-48S-3AFO?
The QFX5100-48S-3AFO is available through authorized Juniper distributors, resellers, and Juniper’s online store.