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

The QFX5100-48S-AFO is a Juniper switch featuring 48 SFP+/SFP ports and 6 QSFP ports, designed for high-density, high-speed networking with a switching capacity of 1.44 Tbps/1.08 Bpps. It is equipped with redundant AC power supplies, redundant (N+1) hot-pluggable fan modules, and supports both AC and DC power inputs (110-240 V single phase AC, -36 to -72 V DC), ensuring continuous operation. Additional technical specifications include 1x RJ-45 Serial Console, 1x RJ-45 Gigabit Management, 1x Gigabit SFP Management ports, and 2x Expansion Module Slots, accommodating various network management and expansion requirements.

FAQs for the QFX5100-48S-AFO

  • What are the port configurations available on the QFX5100?
    The QFX5100 offers 48 SFP+/SFP ports and 6 QSFP ports, along with redundant fans and AC power supplies. It also provides various management ports including 1x RJ-45 Serial Console, 1x RJ-45 Gigabit Management, 1x Gigabit SFP Management, and 1x USB.
  • How much power does the device consume?
    The device has a power consumption of 150W.
  • Can you detail the switching capacity and forwarding rate of this model?
    The switching capacity of the model is 1.44 Tbps, with a forwarding rate of 1.08 Bpps.
  • What are the physical dimensions and weight of the switch?
    The switch measures 1.72 x 17.36 x 20.48 inches (H x W x D) and weighs 21.8 lb (9.9 kg).
  • Does the QFX5100 support both AC and DC power supplies?
    Yes, it supports 110-240 V single-phase AC power and -36 to -72 V DC power, with dual redundant (1+1) and hot-pluggable power supplies.
  • What options are available for cooling?
    The switch supports both front-to-back and back-to-front cooling, featuring redundant (N+1) and hot-pluggable fan modules.
  • What are the Ethernet and management port options?
    It includes 1GbE SFP (24 copper 1GbE), 10GbE SFP+ (48/72 with breakout cable), 40GbE QSFP+ (6), and management ports comprising 1x RJ-45 Serial Console, 1x RJ-45 Gigabit Management, 1x Gigabit SFP Management, and 1x USB.
  • What environmental conditions is the QFX5100 designed to operate in?
    It operates within a temperature range of 32° to 104° F (0° to 40° C), at an altitude of up to 2,000 meters. Its operating relative humidity range is 5% to 90% (noncondensing), and non-operating relative humidity is 0% to 95% (noncondensing).
  • What are the module slots and options available?
    The switch has 2x Expansion Module Slots for additional customization and expansion capabilities.
  • What is the maximum jumbo frame size supported?
    The maximum supported jumbo frame size is 9,216 bytes.

Product Review

The Juniper QFX5100-48S-AFO switch provides a high switching capacity of 1.44 Tbps/1.08 Bpps, accommodating dense network environments with its 48 SFP+/SFP ports and 6 QSFP ports. However, its maximum operating temperature of 40°C may limit deployment in hotter climates without adequate cooling solutions. Additionally, the switch's dual redundant power supplies and hot-pluggable fan modules enhance system reliability, although its power consumption at 150W could be a consideration for energy-sensitive installations.


The Juniper QFX5100-48S-AFO is a high-performance, high-density switch designed for top-of-rack, end-of-row, and data center deployment. This switch is part of the QFX5100 line and offers advanced features tailored for the most demanding data center networks. It supports a broad set of switching and security features, providing flexibility and scalability for cloud and virtualized data center environments. At the core of its design, the QFX5100-48S-AFO features 48 SFP+/SFP ports and 6 QSFP ports, providing ample connectivity for a wide range of network topologies and bandwidth requirements. This configuration supports up to 48 10GbE connections or 72 10GbE connections with the use of breakout cables, along with six 40GbE connections for uplink or stacking purposes. The switch has a total switching capacity of 1.44 Tbps and a forwarding rate of 1.08 Bpps, ensuring high performance and efficiency in handling large volumes of data traffic. Key hardware specifications include: - Dual redundant, hot-pluggable AC power supplies and fan modules, ensuring uninterrupted operation and reliability. The system supports a power supply range of 110-240 V AC single phase, as well as -36 to -72 V DC power, catering to various data center power configurations. - Management connectivity is provided through multiple ports: one RJ-45 Serial Console, one RJ-45 Gigabit Management, one Gigabit SFP Management, and one USB port. These options facilitate easy and versatile management setups. - The switch's design includes two expansion module slots, offering additional flexibility for network customization and expansion. Other notable features of the QFX5100-48S-AFO include: - A power consumption of 150W, optimizing energy use while maintaining high-level performance. - A compact form factor with dimensions of 1.72 x 17.36 x 20.48 inches and a weight of 21.8 lb, making it suitable for space-constrained environments. - Support for jumbo frames up to 9,216 bytes, enhancing the efficiency of large data transfers. - Operational temperature range from 32° to 104° F and storage temperature range from -40° to 158° F, ensuring reliable operation in a wide range of environmental conditions. - Relative humidity tolerance from 5% to 90% during operation and 0% to 95% during non-operation, accommodating various humidity levels without condensation. The Juniper QFX5100-48S-AFO is designed with redundancy and reliability in mind, featuring: - Redundant (N+1) and hot-pluggable fan modules with front-to-back airflow, ensuring optimal cooling and system longevity. - Dual redundant (1+1) power supplies, guaranteeing continuous operation even in the event of a power supply failure. This switch is an ideal solution for organizations seeking a high-performance, scalable, and reliable networking platform for their data center environments. With its comprehensive feature set and robust hardware specifications, the Juniper QFX5100-48S-AFO meets the needs of the most demanding network applications, providing a solid foundation for future growth and technological evolution.


Item NumberJuniper QFX5100-48S-AFO
Ports48 SFP+/SFP, 6 QSFP+
Cooling SystemFront-to-back airflow, N+1 hot-swappable fan units
Power SupplyDual, hot-swappable, AC, 1+1 redundancy
Management Interfaces1 RJ-45 Serial Console, 1 RJ-45 Gigabit Management, 1 Gigabit SFP Management, 1 USB port
Expansion Options2 Expansion Module Slots
Switching Performance1.44 Terabits per second / 1.08 Billion packets per second
Energy Use150 Watts
Mass21.8 pounds (9.9 kilograms)
Dimensions1.72 x 17.36 x 20.48 inches (4.37 x 44.09 x 52.02 centimeters)
Airflow DirectionBack-to-front
Electrical Input110-240 V AC single phase, -36 to -72 V DC
Rack Compatibility19-inch server rack mountable
1GbE SFP Capacity48 (Includes 24 1GbE copper ports)
10GbE SFP+ Capacity48/72 (via breakout cable)
40GbE QSFP+ Capacity6
Operational Temperature Range32° to 104° Fahrenheit (0° to 40° Celsius)
Storage Temperature Range-40° to 158° Fahrenheit (-40° to 70° Celsius)
Maximum Operating AltitudeUp to 2,000 feet (610 meters)
Operational Humidity5% to 90% non-condensing
Non-operational Humidity0% to 95% non-condensing
Maximum Frame Size9,216 bytes

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