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QFX5120-48Y-AFI2
Juniper Networks QFX Series QFX5120-48Y - switch - 48 ports...
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Pay by PayPal or Revolut with full chargeback rights. Order on PO terms, Net-30 for government.
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Since 2016, Enterprise-Trusted
Ten years serving buyers who audit their vendors. From federal agencies to 20,000+ enterprise clients worldwide.
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 for new stock is $15,083.15, a 54.1% saving from the Juniper list price of $32,865.00. QFX5120-48Y-AFI2 refurb price is $9,450.00. 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 Juniper Ex2300 Series Ethernet Switches series or explore all Juniper products.
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| 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 |
| 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+ |
| 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 |
| 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 |
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviewed on the 25 February 2018
Exceptional 25G density. The managed features are powerful and the switching fast.
Reviewed on the 18 August 2023
High-performance data center switch. Reliable throughput and very stable under heavy traffic.
Reviewed on the 4 November 2017
Professional grade Juniper quality. 48 ports of 25G offer incredible network flexibility.
Reviewed on the 11 February 2023
Solid and dependable. The QFX5120 is essential for our modern core infrastructure.
Reviewed on the 24 July 2023
Stunning throughput speeds. Consistent performance and robust management for our data center.
Reviewed on the 8 July 2023
Top-tier switching. It handles our server traffic with remarkably low latency daily.
Reviewed on the 5 April 2023
Reliable and fast. A high-density solution for demanding enterprise networking environments.
Reviewed on the 11 August 2021
Exceptional build quality. The QFX series continues to lead in data center performance.
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.
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.
The switch offers up to 3.6 Tbps of switching capacity and a maximum forwarding rate of 2.7 billion packets per second (Bpps).
Yes. It supports comprehensive Layer 2 features (VLAN, Spanning Tree, MLAG) and advanced Layer 3 routing (OSPF, BGP, RIP, VRF).
Management is via Junos OS CLI, Juniper’s REST API, Junos Space, SNMP, RMON, and sFlow for real-time telemetry and automation.
The AFI2 license activates EVPN-VXLAN, MPLS, advanced security (MACsec), segment routing, and comprehensive traffic analytics.
Yes. It’s a 1U, 19-inch rack-mount device measuring 44.25×1.68×20.87 cm (W×H×D) with included mounting brackets.
The switch supports dual hot-swappable 750 W AC power supplies for N+1 redundancy and continuous uptime.
Typical power consumption is approximately 205 W, with a maximum draw of around 350 W under full load.
It uses front-to-back airflow with redundant, hot-swappable fans to maintain optimal operating temperatures in data center environments.
Yes. It supports Virtual Chassis configurations up to 10 units, enabling single-system management and high-availability clustering.
Ideal for data center leaf-spine topologies, campus aggregation, and high-performance edge deployments requiring 10/25 GbE connectivity.
It supports Junos automation tools (PyEZ), Ansible modules, Terraform providers, and native Python or REST-based scripting.
Security features include MACsec encryption, dynamic MAC filtering, ACLs, DHCP snooping, ARP inspection, and DDoS mitigation.
The QFX5120-48Y-AFI2 comes with a one-year limited hardware warranty and optional Juniper J-Care support for extended coverage.
The AFI2 model includes an advanced feature license that unlocks EVPN-VXLAN, MPLS, MACsec, and enhanced telemetry not available in the base model.
United States
