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by Juniper
Product Line: Juniper QFX5100 Series
Product Type: Switch
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Product Description

The QFX5100-48S-D-3AFO features 48 SFP+/SFP ports and 6 QSFP+ ports, along with dual management ports supporting both SFP and RJ-45 connections, catering to diverse networking requirements. It offers a switching capacity of 1.44 Tbps/1.08 Bpps, ensuring efficient data handling, and is equipped with dual redundant (1+1) and hot-pluggable power supplies, alongside redundant (N+1) fan modules, to maintain operational stability. Designed for rack integration, this model measures 1.72 x 17.36 x 20.48 inches and supports an operating temperature range of 32° to 104° F, with a power consumption of 150W, making it suitable for high-density, high-performance data center environments.

FAQs for the QFX5100-48S-D-3AFO

  • What is the switching capacity of the QFX5100 switch?
    The switching capacity is 1.44 Tbps/1.08 Bpps.
  • How many 10GbE SFP+ ports does it support?
    It supports 48 SFP+/SFP ports, and with a breakout cable, it can support up to 72 10GbE SFP+ connections.
  • What are the power supply specifications for this device?
    The device features dual redundant (1+1) and hot-pluggable power supplies, supporting both AC power (110-240 V single phase) and DC power (-36 to -72 V).
  • Can you detail the management ports available on the QFX5100?
    Management ports include 1x RJ-45 Serial Console, 1x RJ-45 Gigabit Management, 1x Gigabit SFP Management, and 1x USB.
  • What are the cooling mechanisms employed by the device?
    The device utilizes redundant (N+1) and hot-pluggable fan modules with front-to-back airflow.
  • Describe the module slots and options available.
    There are 2x Expansion Module Slots available for additional connectivity and features.
  • How does the device support 40GbE QSFP+ connections?
    It has 6 QSFP+ ports that provide 40GbE connectivity.
  • What are the physical dimensions and weight of the QFX5100?
    Dimensions are 1.72 x 17.36 x 20.48 inches (H x W x D), and it weighs 21.8 lb (9.9 kg).
  • What environmental conditions are recommended for operating the QFX5100?
    Operating temperature ranges from 32° to 104° F (0° to 40° C), with a relative humidity operating range of 5% to 90% (noncondensing).
  • What is the maximum jumbo frame size supported?
    The maximum jumbo frame size supported is 9,216 bytes.

Product Review

The Juniper QFX5100-48S-D-3AFO switch offers high switching capacity at 1.44 Tbps/1.08 Bpps, accommodating demanding network environments with its 48 SFP+/SFP ports and 6 QSFP+ ports. However, its power consumption at 150W might be a concern for energy-conscious deployments. Additionally, the switch ensures operational continuity through redundant fans and power supplies, alongside flexible management port options, enhancing its reliability for critical network infrastructures.


The Juniper QFX5100-48S-D-3AFO is a high-performance switch designed to meet the demands of data center and campus networks. It comes equipped with 48 SFP+/SFP ports and 6 QSFP+ ports, providing flexibility in connectivity and high-density options for a variety of network requirements. This switch also features dual SFP/RJ-45 management ports, enhancing its management capabilities. One of the key attributes of the QFX5100-48S-D-3AFO is its redundancy features, including redundant fans and DC power supplies, ensuring continuous operation and minimizing downtime. The switch supports both front-to-back and back-to-front airflow configurations, accommodating different rack setups and ensuring optimal cooling. In terms of management ports, the device includes a comprehensive set of options: one RJ-45 Serial Console, one RJ-45 Gigabit Management, one Gigabit SFP Management, and one USB port. These options provide versatile management connectivity, facilitating easy setup and ongoing maintenance. The hardware also features two expansion module slots, allowing for future upgrades and increased functionality. This flexibility ensures that the switch can adapt to changing network requirements. The QFX5100-48S-D-3AFO boasts a switching capacity of 1.44 Tbps and a forwarding rate of 1.08 Bpps, demonstrating its ability to handle large volumes of data efficiently. Despite its power, it maintains a relatively low power consumption of 150W, making it an energy-efficient choice for any network. Weighing 21.8 lb (9.9 kg) and with dimensions of 1.72 x 17.36 x 20.48 inches, the switch is designed for easy installation in a 19-inch server rack. Its compact size and weight make it manageable for network administrators. For power supply, the QFX5100-48S-D-3AFO supports both AC and DC power inputs, ranging from 110-240 V single phase AC to -36 to -72 V DC, accompanied by dual redundant (1+1) and hot-pluggable power supplies. This ensures the switch can operate in a wide range of environments and power systems. The device operates within a temperature range of 32° to 104° F and can be stored in temperatures ranging from -40° to 158° F. It can function at altitudes up to 2,000 meters and withstand relative humidity from 5% to 90% during operation. Key hardware specifications include: -
  • 1GbE SFP: 48 (24 copper 1GbE)
  • 10GbE SFP+: 48/72 (with breakout cable)
  • 40GbE QSFP+: 6
Finally, the Juniper QFX5100-48S-D-3AFO supports jumbo frames up to 9,216 bytes, allowing for efficient processing of large data packets, which is particularly beneficial in environments where data transfer efficiency is critical. In summary, the Juniper QFX5100-48S-D-3AFO is a versatile, high-capacity switch that offers a blend of performance, reliability, and scalability, making it suitable for a wide range of network environments.


Part Number Juniper QFX5100-48S-D-3AFO
Manufacturer Juniper
Ports 48 SFP+/SFP, 6 QSFP+, 2 dual-use SFP/RJ-45 management ports
Cooling System Dual, hot-swappable fan units, airflow from front to back
Power Supplies Two redundant DC units, hot-swappable
Management Interfaces 1x RJ-45 Serial Console, 1x RJ-45 Gigabit Ethernet Management, 1x Gigabit SFP Management, 1x USB port
Expansion Options Two slots for expansion modules
Performance Switching capacity of 1.44 Terabits per second / Packet forwarding rate of 1.08 Billion packets per second
Power Usage 150 watts
Weight 21.8 pounds (9.9 kilograms)
Dimensions Height: 1.72 inches, Width: 17.36 inches, Depth: 20.48 inches (4.37 x 44.09 x 52.02 cm)
Airflow Direction Front to back
Power Supply Features 1+1 redundancy, hot-pluggable, AC: 110-240V single phase, DC: -36V to -72V
Fan Modules N+1 redundancy, hot-swappable
Rack Compatibility 19-inch server rack standard
1GbE SFP Ports 48 total, 24 of which are copper 1GbE
10GbE SFP+ Ports 48 native, expandable to 72 with breakout cables
40GbE QSFP+ Ports 6 ports
Operational Temperature Range 32° to 104° F (0° to 40° C)
Storage Temperature Range -40° to 158° F (-40° to 70° C)
Maximum Operating Altitude Up to 2,000 feet (610 meters)
Operating Humidity 5% to 90%, non-condensing
Non-Operating Humidity 0% to 95%, non-condensing
Maximum Frame Size 9,216 bytes (Jumbo frames)

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