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Marshall Sykes
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10G Base-T ports provided flexibility for servers.
QFX5100-48T-AFO
QFX5100, 48 100M/1G/10G Base-T, 6 QSFP ports, redundant fans...
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Name:
QFX5100-48T-AFO
- Description:
- QFX5100, 48 100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant power supplies, Built in Port to PSU air flow.
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 461474376716
- Condition:
- Warranty:
- 3
- List Price:
$34,500.00
- Price:
$15,029.0056.4% off
Quantity:
1
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QFX5100-48T-AFO Overview
QFX5100-48T-AFO is a high-performance, rack‐mount switch built on a modern architecture that supports both Layer 2 and Layer 3 operations. It features 48 fixed 10/100/1000BASE-T copper ports for dense access connectivity and incorporates two 10GbE SFP+ uplink ports to facilitate high-speed data transport, making it ideal for data center access and aggregation.
Engineered for scalability and reliability, the QFX5100-48T-AFO offers robust switching capacity with Virtual Chassis support, ensuring seamless stacking and high throughput even in demanding environments. Its flexible power options combined with a compact, 1 RU form factor suit a variety of use cases including enterprise campus networks, cloud environments, and high-performance computing, all managed under Juniper’s proven network operating system.
QFX5100-48T-AFO price is $15,029.00, a 56.4% saving from the Juniper list price of $34,500.00. QFX5100-48T-AFO is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QFX5100-48T-AFO for additional pricing. Browse the full Juniper Qfx5100 Series Switches series or explore all Juniper products.
QFX5100-48T-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
- N/A
- Manageable
- Managed
- Ethernet Technology
- 10/100/1000
- Media Type Supported
- Twisted Pair
- Redundant Power Supply Supported
- No
- Manufacturer Part Number
- QFX5100-48T-AFO
- Uplink Configuration
- 10G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- 2 SFP+ Ports
- Memory
- 4 GB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 48x 10/100/1000BASE-T ports; 2x 10GbE SFP+ uplink ports
- Flash Memory
- 256 MB
- Switching Capacity
- 720 Gbps
- Switching Capacity with Stacking
- 1.44 Tbps
- Product Name
- Juniper QFX5100-48T-AFO
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 17.5 inches
- Weight
- 12 lbs
QFX5100-48T-AFO Use Case
High-Density Leaf-Spine Fabric for Enterprise Private Cloud
In a global enterprise data center, the QFX5100-48T-AFO-QFX5100 (48×100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant PSUs, built-in Port-to-PSU airflow) serves as leaf switches in a spine-leaf architecture. By delivering consistent sub-microsecond latency, deterministic east-west traffic, and seamless EVPN-VXLAN overlay, it accelerates VM migration, scales out containerized workloads, and ensures 99.999% uptime. Outcome: simplified network automation, reduced CAPEX/OPEX, and on-demand private cloud elasticity.
Ultra-Low-Latency Core for Financial Trading Platforms
In a high-frequency trading (HFT) firm’s datacenter, deploying the QFX5100-48T-AFO-QFX5100 (48×100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant PSUs, built-in Port-to-PSU airflow) at the core layer eliminates link jitter and packet loss. Hardware-based cut-through switching and Precision Time Protocol (PTP) deliver deterministically low latency under 500ns. Benefit: sub-millisecond market data propagation, accelerated order execution, and guaranteed trading uptime with redundant power and optimal thermal management.
High-Performance AI/ML Cluster Interconnect
For a research institution’s GPU-based AI/ML cluster, the QFX5100-48T-AFO-QFX5100 (48×100M/1G/10G Base-T, 6 QSFP ports, redundant fans, redundant PSUs, built-in Port-to-PSU airflow) provides converged storage and compute fabric. RDMA-over-Converged-Ethernet (RoCE) support and 40GbE/100GbE uplinks via QSFP enable multi-GPU synchronization with <1μs latency. Outcome: faster neural network training, linear scale-out performance, and uninterrupted research cycles through hot-swap power and fan modules.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 QFX5100-48T-AFO |  QFX5100-48S-3AFI |  QFX5100-24Q-3AFO |  QFX5100-96S-DC-AFI |  QFX5100-48S-D-3AFI | |
|---|---|---|---|---|---|
| Depth | 17.5 inches | 18 inches | 17 inches | 18 inches | 17.5 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 | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1.7 inches | 1.73 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | IP Services | IP Lite | 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 3 | Layer 2 / Layer 3 | Layer 2 / Layer 3 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | QFX5100-48T-AFO | QFX5100-48S-3AFI | QFX5100-24Q-3AFO | QFX5100-96S-DC-AFI | QFX5100-48S-D-3AFI |
| Media Type Supported | Twisted Pair | Fiber | Fiber | Fiber | Fiber |
| Memory | 4 GB | 4 GB | 4 GB | 512 MB | 4 GB |
| Number of Downlink Ports | N/A | 48 Ports | 24 Ports | N/A | 48 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | Over 48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 48x 10/100/1000BASE-T ports; 2x 10GbE SFP+ uplink ports | N/A | 24 QSFP+ ports | N/A | N/A |
| Power Consumption | N/A | 250 W | 370W | 450 W | 330W |
| Power Source | AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply | Redundant Power Supply / AC Power Supply |
| Product Name | Juniper QFX5100-48T-AFO | Juniper QFX5100-48S-3AFI | Juniper QFX5100-24Q-3AFO | Juniper QFX5100-96S-DC-AFI | Juniper Networks QFX5100-48S-D-3AFI |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | Yes | No | Yes | Yes |
| SFP Ports | 2 SFP+ Ports | 48 SFP Ports | N/A | 96 SFP Ports | 48 SFP Ports |
| Switching Capacity | 720 Gbps | 1280 Gbps | 1440 Gbps | 1440 Gbps | 1280 Gbps |
| Switching Capacity with Stacking | 1.44 Tbps | 1280 Gbps | N/A | 1440 Gbps | 2560 Gbps |
| Uplink Configuration | 10G | 40G | 40G | 10G | 10G |
| Weight | 12 lbs | 15 lbs | 8 lbs | 25 lbs | 18 lbs |
| Width | 17.5 inches | 17.5 inches | 17.5 inches | 17.5 inches | 19 inches |
Reviews & Ratings
E
Edric Vaughan
5
Front to back airflow fit rack layout.
T
Theo Linwood
5
Stable access switching.
P
Piers Donnelly
4
Reliable for mixed environments.
L
Lachlan Moore
4
No issues encountered.
Questions & Answers
What is the Juniper QFX5100-48T-AFO (SKU: QFX5100-48T-AFO)?
The QFX5100-48T-AFO is a 1 RU fixed Ethernet switch featuring 48 100 M/1 G/10 G Base-T ports, 6 QSFP 40 GbE ports, redundant fans and power supplies, and port-to-PSU airflow for data center leaf-spine deployments.
How many and what type of ports does the QFX5100-48T-AFO offer?
It provides 48 RJ-45 ports that auto-negotiate 100 M, 1 G or 10 G and six QSFP ports supporting 40 GbE or 4×10 GbE breakout for uplinks.
What throughput and performance can I expect from the QFX5100-48T-AFO?
The switch delivers up to 1.44 Tbps of throughput and 1.08 billion packets per second (bpps) of line-rate performance with zero packet loss.
Does the QFX5100-48T-AFO support redundant power supplies?
Yes, it includes dual hot-swappable power supply bays for 1+1 redundancy to ensure uninterrupted operation.
Does the QFX5100-48T-AFO include redundant fans?
Yes, it features a front-to-back hot-swappable fan tray with multiple fans for N+1 redundancy and optimal cooling.
How is airflow managed in the QFX5100-48T-AFO?
Airflow is port-to-PSU, drawing cool air from the front and exhausting it through the rear to match standard data center thermal designs.
What uplink options are available on the QFX5100-48T-AFO?
You can use six QSFP ports for native 40 GbE connections or as four 10 GbE channels each via breakout cables.
Which data center architectures best suit the QFX5100-48T-AFO?
It is ideal for leaf-spine, top-of-rack (ToR) and campus aggregation architectures requiring high port density and low latency.
Which operating system runs on the QFX5100-48T-AFO?
It runs Juniper’s modular Junos OS, offering a consistent CLI, scripting, automation and advanced protocol support.
What management and automation features does the QFX5100-48T-AFO support?
It supports Junos CLI, XML/NETCONF, gRPC, Ansible, Puppet, Chef, Zero-Touch Provisioning (ZTP) and integration with Junos Space or Cloud-based management.
Can I deploy the QFX5100-48T-AFO in a Virtual Chassis Fabric or MLAG?
Yes, it supports Virtual Chassis Fabric, MLAG and EVPN-VXLAN for scalable multi-chassis aggregation and leaf-spine underlay/overlay designs.
What are the power and environmental specifications of the QFX5100-48T-AFO?
Typical power usage is 255 W, maximum 408 W; operating temperature ranges from 0 °C to 40 °C and humidity from 5% to 90% non-condensing.
What security features does the QFX5100-48T-AFO provide?
It offers ACLs, storm control, DHCP snooping, port security, MAC limiting, DoS protection and GRE/IPsec tunnels via Junos OS.
Which network devices are compatible with the QFX5100-48T-AFO?
It interoperates with Juniper QFX and EX Series switches, QFabric, third-party leaf-spine fabrics and industry-standard routers and firewalls.
What warranty and support options are available for the QFX5100-48T-AFO?
It comes with a limited lifetime hardware warranty and offers Juniper Care Service for 24×7 support, advance hardware replacement and software updates.
How do I order the QFX5100-48T-AFO and what is the exact SKU?
Order by referencing SKU QFX5100-48T-AFO; consult your authorized Juniper reseller or the Juniper Networks online store for pricing and availability.