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QFX5120-48Y-AFO2
QFX5120-48Y AIRFLOW OUT RED AC PSUS FANS SHIPS W/ BASE S/W
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QFX5120-48Y-AFO2 is a high-performance, rack‐mount data center switch built on a robust architecture designed to deliver low latency, high throughput, and exceptional reliability in demanding network environments. It offers redundant power options, multiple port configurations for superior fiber connectivity, and stacking technology to ensure seamless scalability in enterprise and cloud deployments.
QFX5120-48Y-AFO2 provides exceptional switching performance with advanced hardware acceleration and versatile scalability, making it ideal for data center spine, aggregation, and high-performance computing applications. Its modular design and optimized power consumption reinforce its role in critical network infrastructures where maximum uptime and efficiency are paramount.
QFX5120-48Y-AFO2 price is $4,973.00, a 84.9% saving from the Juniper list price of $32,865.00. QFX5120-48Y-AFO2 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for QFX5120-48Y-AFO2 for additional pricing. Browse the full Juniper Ex2300 Series Ethernet Switches series or explore all Juniper products.
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 QFX5120-48Y-AFO2 |  EX2300-24T-TAA |  EX4650-48Y-AFI |  EX4400-24T |  EX2300-24T | |
|---|---|---|---|---|---|
| Depth | 18 inches | 10 inches | 12 inches | 11 inches | 9.5 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 256 MB | 32 MB | 64 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 1 RU | 1.75 inches | 1.75 inches | 1.75 inches |
| IOS | IP Services | Junos OS (IP Lite) | LAN Base | IP Lite | LAN Lite |
| 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 2 / Layer 3 | Layer 2 / Layer 3 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | QFX5120-48Y-AFO2 | EX2300-24T-TAA | EX4650-48Y-AFI | EX4400-24T | EX2300-24T |
| Media Type Supported | Fiber | Twisted Pair | Combo | Twisted Pair / Fiber | Twisted Pair / Fiber |
| Memory | 4 GB | 256 MB | 256 MB | 256 MB | 256 MB |
| Number of Downlink Ports | 48 Ports | 24 Ports | 48 Ports | 24 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports | 12–24 Ports | 12–24 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | N/A | 24x 10/100/1000 ports, 4x SFP ports | 48 x 10/100/1000 Ethernet ports with 4 x 10G SFP uplink ports | 24x 10/100/1000 ports, 4x 1Gb SFP uplink ports | 24 x 10/100/1000 copper ports, 4 x 1G SFP ports |
| Power Consumption | 265 W | 64W | 250W | 72 W | 25 W |
| Power Source | Redundant Power Supply / AC Power Supply | AC Power Supply | Redundant Power Supply | AC Power Supply | AC Power Supply |
| Product Name | Juniper QFX5120-48Y-AFO2 Ethernet Switch | Juniper EX2300-24T-TAA | EX4650-48Y-AFI 48-Port Managed Rack-Mount Switch with Advanced Features | Juniper EX4400-24T Ethernet Switch | EX2300-24T Ethernet Switch |
| 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 | No | No |
| SFP Ports | 24 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 1280 Gbps | 128 Gbps | 1120 Gbps | 320 Gbps | 128 Gbps |
| Switching Capacity with Stacking | 2560 Gbps | 256 Gbps | 2240 Gbps | 640 Gbps | 128 Gbps |
| Uplink Configuration | 40G | 1G | 10G | 1G | 1G |
| Weight | 18 lbs | 13.2 lbs | 20 lbs | 11 lbs | 11 lbs |
| Width | 17.5 inches | 16.9 inches | 17 inches | 17.5 inches | 17.5 inches |
Top-tier data center switch. Airflow-out design and redundant AC power are excellent.
High-density 25G. Reliable performance with base software and efficient cooling. Very professional.
Stable and fast. The QFX5120 is essential for our high-speed network core.
Excellent 25G performance. Airflow management is perfect for our server rack environment.
Professional and robust. Redundant power supplies provide the uptime our business requires.
Consistent data center switching. The 48 ports of 25G are remarkably stable.
Reliable high-speed hardware. Throughput is incredible and the airflow is very efficient.
Exceptional switching quality. A dependable Juniper platform for modern high-bandwidth data centers.
The QFX5120-48Y-AFO2 is a fixed-configuration, top-of-rack Ethernet switch featuring 48 10GbE RJ45 ports, six 40GbE QSFP+ uplinks, airflow-out cooling, redundant AC PSUs, integrated fans, and base Junos OS software.
It delivers 48 10GbE RJ45 downlinks and six 40GbE QSFP+ uplinks, enabling flexible server and aggregation connectivity in campus or data-center environments.
The QFX5120-48Y-AFO2 offers 1.44 Tbps of switching capacity and up to 1.07 Mpps packet forwarding, ensuring wire-speed performance for latency-sensitive workloads.
Yes, this SKU uses rear-to-front (airflow-out) design optimized for hot-aisle data-center configurations, with integrated fans to maintain optimal operating temperatures.