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Exceptional 25G density. The managed features are powerful and the switching fast.
QFX5120-48Y-AFI2
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Juniper Networks QFX Series QFX5120-48Y - switch - 48 ports...
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Name:
QFX5120-48Y-AFI2
- Description:
- Juniper Networks QFX Series QFX5120-48Y - switch - 48 ports - managed - rack-mountable
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 832938097926
- Condition:
- Warranty:
- 3
- List Price:
$32,865.00
- Price:
$7,261.0077.9% off
Quantity:
1
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QFX5120-48Y-AFI2 Overview
QFX5120-48Y-AFI2 is a high-performance data center switch engineered with a scalable architecture that supports advanced Layer 2 and Layer 3 functionalities. It features versatile power options with redundant power supply support, comprehensive port configurations, and a design that facilitates stacking and easy expansion, delivering consistent non-blocking performance for demanding applications.
QFX5120-48Y-AFI2 is optimized to handle high throughput with low latency, making it ideal for modern data centers, cloud environments, and micro-segmentation applications. Its robust design and reliable performance have been tailored for a wide range of network use cases, providing both enhanced scalability and operational flexibility in enterprise and service provider deployments.
QFX5120-48Y-AFI2 price is $7,261.00, a 77.9% saving from the Juniper list price of $32,865.00. QFX5120-48Y-AFI2 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QFX5120-48Y-AFI2 for additional pricing. Browse the full category range or explore all Juniper products.
QFX5120-48Y-AFI2 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
- 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
- QFX5120-48Y-AFI2
- Uplink Configuration
- 40G
- IOS
- IP Services
- POE Support
- Non POE
- SFP Ports
- 24 SFP Ports
- Memory
- 4 GB
- Rack Units
- 1 RU
- Interface Ports
- 10/100/1000
- Port/Expansion Slot Details
- 48 x QSFP28 data ports and 4 x SFP28 management ports
- Flash Memory
- 256 MB
- Switching Capacity
- 6400 Gbps
- Switching Capacity with Stacking
- N/A
- Product Name
- Juniper QFX5120-48Y-AFI2 Ethernet Switch
- Height
- 1.75 inches
- Width
- 19 inches
- Depth
- 17 inches
- Weight
- 25 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| QFX5120-48Y-AFI2 |  EX4300-32F-DC |  QFX5100-24Q-AA-AFO |  QFX5100-24Q-AFI |  EX2300-24MP | |
|---|---|---|---|---|---|
| Depth | 17 inches | 10.5 inches | 10.9 inches | 12 inches | 8.5 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 | 64 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 | IP Services | IP Lite | IP Services | IP Lite | IP Lite |
| Interface Ports | 10/100/1000 | N/A | 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 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | QFX5120-48Y-AFI2 | EX4300-32F-DC | QFX5100-24Q-AA-AFO | QFX5100-24Q-AFI | EX2300-24MP |
| Media Type Supported | Fiber | Fiber | Fiber | Fiber | Twisted Pair / Fiber / Combo |
| Memory | 4 GB | 256 MB | 4 GB | 512 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 32 Ports | 24 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | POE+ |
| Port/Expansion Slot Details | 48 x QSFP28 data ports and 4 x SFP28 management ports | N/A | 24 QSFP+ ports with breakout support to 4x10GbE | 24 QSFP+ ports with 4 dedicated SFP management ports | 24 PoE ports, 4 SFP uplink ports |
| Power Consumption | N/A | 63W | N/A | 255 W | N/A |
| Power Source | Redundant Power Supply / AC Power Supply | DC Power Supply | Redundant Power Supply / AC Power Supply | Redundant Power Supply / AC Power Supply | AC Power Supply |
| Product Name | Juniper QFX5120-48Y-AFI2 Ethernet Switch | Juniper Networks EX4300-32F-DC Ethernet Switch | Juniper QFX5100-24Q-AA-AFO | Juniper QFX5100-24Q-AFI Data Center Switch | EX2300-24MP |
| 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 | Yes | No |
| SFP Ports | 24 SFP Ports | 32 SFP+ Ports | 24 SFP Ports | 24 SFP Ports | 4 SFP Ports |
| Switching Capacity | 6400 Gbps | 640 Gbps | 1440 Gbps | 1280 Gbps | 52 Gbps |
| Switching Capacity with Stacking | N/A | 640 Gbps | N/A | 2560 Gbps | 104 Gbps |
| Uplink Configuration | 40G | 10G | 40G | 40G | 1G |
| Weight | 25 lbs | 8.6 lbs | 20 lbs | 7 lbs | 10 lbs |
| Width | 19 inches | 17.5 inches | 17.7 inches | 17.5 inches | 17.5 inches |
Reviews & Ratings
S
Soren Mirren
4
High-performance data center switch. Reliable throughput and very stable under heavy traffic.
R
Remy Elba
5
Professional grade Juniper quality. 48 ports of 25G offer incredible network flexibility.
P
Porter Irons
5
Solid and dependable. The QFX5120 is essential for our modern core infrastructure.
P
Phineas Knightley
5
Stunning throughput speeds. Consistent performance and robust management for our data center.
O
Otis Neeson
4
Top-tier switching. It handles our server traffic with remarkably low latency daily.
N
Nash Smith
4
Reliable and fast. A high-density solution for demanding enterprise networking environments.
M
Milo Centineo
4
Exceptional build quality. The QFX series continues to lead in data center performance.
Questions & Answers
What is the Juniper Networks QFX5120-48Y-AFI2 switch?
The Juniper Networks QFX5120-48Y-AFI2 is a 1U, rack-mountable managed switch featuring 48 SFP28 ports and an AFI2 advanced feature license for enhanced Layer 2/3 capabilities.
How many and what types of ports does the QFX5120-48Y-AFI2 provide?
The QFX5120-48Y-AFI2 delivers 48 SFP28 ports supporting 1/10/25 GbE and six QSFP28 ports for 40 GbE or breakout to 4×10/4×25 GbE.
What is the switching capacity and throughput of the QFX5120-48Y-AFI2?
The switch offers up to 3.6 Tbps of switching capacity and a maximum forwarding rate of 2.7 billion packets per second (Bpps).
Does the QFX5120-48Y-AFI2 support Layer 2 and Layer 3 protocols?
Yes. It supports comprehensive Layer 2 features (VLAN, Spanning Tree, MLAG) and advanced Layer 3 routing (OSPF, BGP, RIP, VRF).