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Juniper QFX5120-48T-AFO Ethernet Switch – 48 x 10GbE - 6 x 100GbE QSFP28 - Layer 3 - Managed - 1U Rack
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Product Features
Technical Overview
The QFX5120-48T-AFO offers a flexible port architecture with 48 10GBase-T copper ports and six QSFP28 slots supporting 100GBase-X optics. This mix allows for cost-effective 10GbE access with high-speed 100GbE uplinks, reducing bottleneck in core or distribution layers. The switch is fully managed, providing granular control over traffic engineering, security policies, and network monitoring.
With Layer 3 capabilities, the switch can perform IP routing, VLAN routing, and multicast forwarding, enabling it to function as a standalone router or as part of a larger routed fabric. It supports redundant power supplies (up to two) for high availability, and consumes 450 W under typical load. The 1U rack-mountable chassis fits easily into standard 19-inch racks.
This section brings together practical product details such as Total Number of Network Ports, Uplink Port, Modular, Media Type Supported, so buyers can judge configuration, deployment fit, and day-to-day suitability with less guesswork.
Key Product Advantages
The Juniper QFX5120-48T-AFO delivers a compelling mix of high-density 10GbE access and 100GbE uplink capacity in a compact 1U footprint. This design is ideal for organizations looking to future-proof their network with scalable, high-throughput switching without sacrificing rack space.
These strengths make the product easier to deploy and manage in real environments, especially where reliability, usability, and day-to-day operational continuity matter. Notable benefits include High-Density 10GbE Access, 100GbE Uplink Readiness, Layer 3 Intelligence.
High-Density 10GbE Access
48 10GBase-T ports provide cost-effective, copper-based 10 Gigabit connections for servers, storage, and high-performance workstations.
100GbE Uplink Readiness
Six QSFP28 slots support 100GBase-X modules, enabling high-bandwidth uplinks to core switches or routers for non-blocking aggregation.
Layer 3 Intelligence
Built-in Layer 3 switching allows for advanced routing protocols, VLAN segmentation, and policy-based traffic management.
Deployment / Use Cases
The QFX5120-48T-AFO is well-suited for data center top-of-rack (ToR) or middle-of-row deployments where high port density and low latency are critical. Its 10GbE copper ports connect to servers and storage, while the 100GbE uplinks aggregate traffic to the core. In campus networks, it can serve as a distribution switch for high-bandwidth edge switches.
For enterprise networks requiring robust security and segmentation, Layer 3 capabilities enable VLAN routing, ACL enforcement, and multicast optimization. The modular expansion slots also allow future upgrades to higher-speed optics as network demands grow.
Data Center ToR Aggregation
Connect up to 48 servers at 10GbE with 100GbE uplinks to core switches.
Campus Distribution
Aggregate edge switches with 10GbE downlinks and 100GbE fiber uplinks to the campus core.
Physical Profile
The switch is housed in a 1U rack-mountable chassis measuring 17.36 x 20.48 x 1.72 inches (440.94 x 520.19 x 43.69 mm) and weighing approximately 24.25 lb (11 kg). Its compact design allows for dense deployment in standard 19-inch racks. The front panel provides 48 RJ-45 10GBase-T ports and six QSFP28 cages, with LEDs for status indication. The rear panel offers power supply bays and management interfaces.
- Width
- 17.36" (440.94 mm)
- Depth
- 20.48" (520.19 mm)
- Height
- 1.72" (43.69 mm)
- Weight
- 24.25 lb (10999.61 g)
Highlights
- 48 x 10GBase-T ports for high-density copper 10 Gigabit Ethernet connectivity
- 6 x QSFP28 expansion slots support 100GBase-X for high-speed uplinks
- Layer 3 managed switch with advanced routing and traffic management
- Redundant power supply support (up to 2) for high availability
- 1U rack-mountable form factor for space-efficient deployment
- 450 W power consumption with 80 PLUS Silver efficiency
- Supports twisted-pair and optical fiber media types
- Environmentally friendly with RoHS, WEEE, REACH, and China RoHS compliance
Specifications
| Specifications | |
|---|---|
| Manufacturer | Juniper Networks, Inc |
| Manufacturer Part Number | QFX5120-48T-AFO |
| Brand Name | Juniper |
| Product Series | QFX |
| Product Model | QFX5120-48T |
| Product Name | QFX5120-48T Ethernet Switch |
| Product Type | Ethernet Switch |
| Interfaces/Ports | |
| Total Number of Network Ports | 48 |
| Uplink Port | Yes |
| Modular | Yes |
| Port/Expansion Slot Details | 48 x 10 Gigabit Ethernet Network,6 x 100 Gigabit Ethernet Expansion Slot |
| Media & Performance | |
| Media Type Supported | Twisted Pair,Optical Fiber |
| Ethernet Technology | 10 Gigabit Ethernet,100 Gigabit Ethernet |
| Network Technology | 10GBase-T,100GBase-X |
| I/O Expansions | |
| Total Number of Expansion Slots | 6.0 |
| Expansion Slot Type | 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 | 450 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) | 24.25 lb (10999.61 g) |
| Miscellaneous | |
| Environmentally Friendly | Yes |
| Energy Efficiency Certification | 80 Plus Silver |
| Environmental Compliance | Restriction of Hazardous Substances (RoHS),Waste Electrical and Electronic Equipment Directive (WEEE),Registration, Evaluation, Authorization and Restriction of Chemicals (REACH),China Restriction of Hazardous Substances (China RoHS) |
| Warranty | |
| Limited Warranty | 1 Year |
FAQ
What is the port configuration of the Juniper QFX5120-48T-AFO?
The switch provides 48 10GBase-T (RJ-45) ports for 10 Gigabit Ethernet connectivity and six QSFP28 expansion slots for 100 Gigabit Ethernet uplinks. This allows for dense 10GbE access with high-speed 100GbE fiber uplinks to core network equipment.
Does the QFX5120-48T-AFO support Layer 3 routing?
Yes, it supports Layer 3 switching, enabling IP routing between VLANs, static routes, dynamic routing protocols, and multicast forwarding. This makes it suitable for routed access or distribution layer deployments.
What uplink options are available on the QFX5120-48T-AFO?
The six QSFP28 expansion slots support 100GBase-X transceivers (optical or DAC cables) for 100 Gigabit Ethernet uplinks. They also support lower-speed QSFP+ modules for backward compatibility with 40GbE.
What is the power consumption and redundancy support?
The switch consumes up to 450 W and supports up to two redundant power supplies for fault tolerance. It is 80 PLUS Silver certified for energy efficiency.
What physical form factor does the QFX5120-48T-AFO use?
It is a 1U rack-mountable switch designed for standard 19-inch racks, with dimensions 17.36 x 20.48 x 1.72 inches (440.94 x 520.19 x 43.69 mm) and a weight of approximately 24.25 lb (11 kg).
What environmental and regulatory compliances does the switch meet?
It is compliant with RoHS, WEEE, REACH, and China RoHS, and carries 80 PLUS Silver energy efficiency certification. This ensures environmentally responsible manufacturing and operation.
What uplink, SFP, fiber, or media support detail is listed?
The warranty or support detail listed is Yes, giving buyers a clearer picture of expected coverage after purchase.
| Qty | Price | Available |
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