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Juniper QFX5120-48YM-AFO 48-Port 25GbE Switch with 8 x 100GbE Uplinks - Layer 3 - 1U Rack-Mountable
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Product Features
Technical Overview
This switch operates at Layer 3, enabling advanced routing, VLAN segmentation, and policy-based traffic management for optimized network performance. It supports 25GBase-X and 100GBase-X network technologies, ensuring compatibility with high-speed optical fiber infrastructure and efficient data transmission.
The power system includes a built-in power supply with support for redundant power supplies, delivering stable voltage distribution and enhanced uptime. With a power consumption of 650 W and 80 Plus Silver energy efficiency certification, it balances performance with operational efficiency.
Relevant factors for this section include Uplink Port, Modular, Port/Expansion Slot Details, Media Type Supported. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The QFX5120-48YM-AFO combines high port density with uplink flexibility, making it ideal for aggregating traffic in data centers or as a core switch in large enterprise networks. Its Layer 3 functionality supports complex routing protocols and quality of service (QoS) features, enhancing network control and scalability.
High-Speed Connectivity
Delivers 48 ports of 25GbE and 8 ports of 100GbE, enabling seamless integration with servers, storage, and uplink networks for reduced bottlenecks.
- Supports optical fiber for long-distance runs
- Uses SFP28 and QSFP28 transceivers
Reliable Power Design
Features redundant power supply support and an 80 Plus Silver certification, ensuring energy-efficient operation and minimized downtime in critical environments.
Compact Rack Profile
Occupies only 1U of rack space with dimensions of 1.72" H x 17.36" W x 20.48" D, optimizing data center real estate while maintaining full feature sets.
Deployment / Use Cases
This switch is well-suited for data center spine-leaf architectures, where high bandwidth and low latency are essential for connecting servers, storage arrays, and hyper-converged infrastructure. Its 100GbE uplinks provide ample headroom for aggregation and backbone connectivity.
In enterprise campus networks, it can serve as a core or distribution layer switch, handling inter-VLAN routing, policy enforcement, and high-volume traffic from access switches. The modular ports allow tailored configurations for mixed 25GbE and 100GbE environments.
Relevant factors for this section include Uplink Port, Modular, Port/Expansion Slot Details, Media Type Supported. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Data Center Core
Ideal for spine roles in modern data centers, offering high-density 25GbE server connectivity and 100GbE uplinks for scalable fabric designs.
Enterprise Aggregation
Supports large office or campus networks by aggregating traffic from access switches, with Layer 3 features for segmentation and security.
Physical Profile
The switch features a robust rack-mountable chassis with a height of 1.72" (43.69 mm), width of 17.36" (440.94 mm), and depth of 20.48" (520.19 mm), designed for standard 19-inch racks. Its weight of approximately 24.80 lb ensures stable mounting, while the 1U form factor maximizes rack density without sacrificing cooling or accessibility.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 1.72" (43.69 mm), 17.36" (440.94 mm), 20.48" (520.19 mm), 24.80 lb (11249.090776 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 17.36" (440.94 mm)
- Depth
- 20.48" (520.19 mm)
- Height
- 1.72" (43.69 mm)
- Weight
- 24.80 lb (11249.090776 g)
Highlights
- 48 x 25 Gigabit Ethernet ports for high-density server connectivity
- 8 x 100 Gigabit Ethernet uplink slots for backbone aggregation
- Layer 3 switching support for advanced routing and VLAN management
- Modular design with SFP28 and QSFP28 expansion slots
- Optical fiber media compatibility for long-distance, high-speed links
- Redundant power supply support with 650 W power consumption
- 1U rack-mountable form factor for space-efficient deployment
- 80 Plus Silver energy efficiency certification
- Manageable via standard networking protocols for full control
- Complies with RoHS, WEEE, REACH, and China RoHS environmental standards
Specifications
| Specifications | |
|---|---|
| Manufacturer | Juniper Networks, Inc |
| Manufacturer Part Number | QFX5120-48YM-AFO |
| Brand Name | Juniper |
| Product Series | QFX |
| Product Model | QFX5120-48YM |
| Product Name | QFX5120-48YM Ethernet Switch |
| Product Type | Ethernet Switch |
| Interfaces/Ports | |
| Uplink Port | Yes |
| Modular | Yes |
| Port/Expansion Slot Details | 48 x 25 Gigabit Ethernet Expansion Slot,8 x 100 Gigabit Ethernet Expansion Slot |
| Media & Performance | |
| Media Type Supported | Optical Fiber |
| Ethernet Technology | 25 Gigabit Ethernet,100 Gigabit Ethernet |
| Network Technology | 25GBase-X,100GBase-X |
| I/O Expansions | |
| Total Number of Expansion Slots | 56.0 |
| Expansion Slot Type | SFP28,QSFP28 |
| Network & Communication | |
| Layer Supported | 3 |
| Management & Protocols | |
| Manageable | Yes |
| Power Description | |
| Power Source | Power Supply |
| Redundant Power Supply Supported | Yes |
| Number of Power Supplies Supported | 2 |
| Power Consumption | 650 W |
| Physical Characteristics | |
| Compatible Rack Unit | 1U |
| Form Factor | Rack-mountable |
| Height | 1.72" (43.69 mm) |
| Width | 17.36" (440.94 mm) |
| Depth | 20.48" (520.19 mm) |
| Weight (Approximate) | 24.80 lb (11249.090776 g) |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Energy Efficiency Certification | 80 Plus Silver |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),China Restriction of Hazardous Substances (China RoHS),Waste Electrical and Electronic Equipment Directive (WEEE),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) |
| Country of Origin | China |
FAQ
How many ports does this Juniper switch have, and what are their speeds?
The Juniper QFX5120-48YM-AFO includes 48 x 25 Gigabit Ethernet ports and 8 x 100 Gigabit Ethernet uplink slots, providing a total of 56 expansion slots. This configuration supports high-speed connectivity for servers and network aggregation, with the 100GbE ports ideal for backbone or spine links in data center environments.
Does this switch support Layer 3 functionality?
Yes, this switch supports Layer 3 switching, enabling advanced features such as inter-VLAN routing, dynamic routing protocols, and policy-based traffic management. This makes it suitable for core or distribution roles in networks requiring segmentation, scalability, and enhanced performance beyond basic Layer 2 switching.
What type of transceivers or media does this switch use?
It supports optical fiber media and uses SFP28 transceivers for the 25 Gigabit Ethernet ports and QSFP28 transceivers for the 100 Gigabit Ethernet uplinks. This allows compatibility with high-speed fiber optic cables, enabling long-distance connections and high data transmission rates in data center or enterprise settings.
Is this switch rack-mountable, and what are its dimensions?
Yes, it is rack-mountable with a 1U form factor. The dimensions are 1.72" (43.69 mm) in height, 17.36" (440.94 mm) in width, and 20.48" (520.19 mm) in depth, designed for standard 19-inch racks. This compact profile optimizes rack space while providing full switching capabilities.
What power features does this switch include?
The switch includes a built-in power supply with support for redundant power supplies (up to 2), enhancing reliability in critical deployments. It has a power consumption of 650 W and carries an 80 Plus Silver energy efficiency certification, ensuring efficient operation and stable voltage delivery for all components.
Is this switch manageable, and what are its environmental certifications?
Yes, it is fully manageable via standard networking protocols for configuration, monitoring, and troubleshooting. Environmentally, it complies with Restriction of Hazardous Substances (RoHS), China RoHS, Waste Electrical and Electronic Equipment Directive (WEEE), and Registration, Evaluation, Authorization and Restriction of Chemicals (REACH), supporting eco-friendly deployment practices.
| Qty | Price | Available |
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