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by Juniper
Product Line: Juniper QFX Series Switches
Product Type: Switch
Sold out
Original price $0.00 - Original price $1,068.00
Original price
$0.00 - $1,068.00
Current price $0.00
Title: Surplus

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Product Description

The QFX3500-48S4Q features a switching capacity of 1.28 Tbps and 960 Mpps, supporting both cut-through and store-and-forward switching modes. It is equipped with 48 SFP+/SFP ports and 4 QSFP+ ports, with QSFP+ ports configurable as either 4 x 10GbE interfaces or a single 40 Gbps port. This 1U device measures 1.75 in (4.45 cm) in height, 17.25 in (43.82 cm) in width, and 28 in (71.12 cm) in depth, supports dual redundant hot-pluggable power supplies, and operates within a temperature range of 32° to 104° F (0° to 40° C).

Key Feature for the QFX3500-48S4Q

  • What is the switching capacity of the QFX3500?
    The QFX3500 offers a switching capacity of 1.28 Tbps and 960 Mpps.
  • How many SFP+/SFP and QSFP ports does the switch have?
    It has 48 SFP+/SFP and 4 QSFP ports.
  • Can the QSFP+ ports on the QFX3500 be configured for different speeds?
    Yes, each QSFP+ port can be configured as a 4 x 10GbE interface or a single 40 Gbps port.
  • What are the weight and dimensions of the switch?
    The switch weighs 30.75 lb (13.95 kg) and measures 1.75 in (4.45 cm) in height, 17.25 in (43.82 cm) in width, and 28 in (71.12 cm) in depth.
  • Does the QFX3500 support different airflow directions?
    Yes, it supports both front-to-back and back-to-front airflow configurations.
  • What power options are available for this device?
    It supports 110-240 V single phase AC power and -36 V to -72 V DC power, with dual redundant (1+1) and hot-pluggable power supplies.
  • What are the environmental operating conditions for the QFX3500?
    Operating temperature ranges from 32° to 104° F (0° to 40° C), with a relative humidity of 5% to 90% (noncondensing).
  • How many dual-mode 10GbE or GbE ports does it include?
    The switch includes 36 dual-mode 10GbE or GbE ports.
  • What is the storage temperature range for the QFX3500?
    The storage temperature range is -40° to 158° F (-40° to 70° C).
  • Are there any specific mounting options for the QFX3500?
    Yes, it includes mounting options for a 19-inch server rack.

Product Review

The Juniper QFX3500-48S4Q offers a high switching capacity of 1.28 Tbps and 960 Mpps, supporting both cut-through and store-and-forward switching modes, catering to diverse network demands. With 48 SFP+ and 4 QSFP+ ports, it provides flexibility for 10GbE or 40 Gbps configurations, though its rear port connections may challenge some installations. Despite its versatility and dual redundant power supplies, the unit's 30.75 lb weight and specific 1U rack height requirement could pose limitations for certain deployment environments.


The Juniper QFX3500-48S4Q is a versatile and high-performance switch designed to meet the demands of modern data centers and high-density computing environments. It combines advanced networking features with high-speed connectivity, making it suitable for a wide range of applications including cloud deployments, virtualized server environments, and high-performance computing. At the heart of the Juniper QFX3500-48S4Q is its impressive switching capacity of 1.28 Tbps and 960 Mpps, which enables it to handle large volumes of data with ease. This capacity is supported by a mix of port types and speeds, offering flexibility in connectivity options. The switch has 48 SFP+ ports, which include 36 dual-mode 10GbE or GbE ports and 12 dual-mode 10GbE or 2/4/8 Gbps FC ports, providing a wide range of connectivity options for different network requirements. Additionally, it includes four QSFP+ ports, each capable of being configured as a 4 x 10GbE interface or as a single 40 Gbps port, further enhancing its versatility.
  • Switching modes include both cut-through and store-and-forward, allowing for optimized data processing based on specific network needs.
  • Dual management ports are available in both copper and fiber versions, facilitating flexible and efficient network management.
  • Dual redundant (1+1) and hot-pluggable power supplies ensure uninterrupted operation, with support for both AC and DC power options.
Weighing 30.75 lb (13.95 kg) with dual power supplies and fan modules, the QFX3500-48S4Q is designed for easy installation and maintenance. It supports front-to-back or back-to-front airflow, accommodating different cooling strategies in data center racks. Its compact dimensions, with a height of 1.75 in (4.45 cm), a width of 17.25 in (43.82 cm), and a depth of 28 in (71.12 cm), make it suitable for mounting in standard 19-inch server racks, providing efficient use of space. The switch operates reliably in a wide range of environmental conditions. It can function in temperatures from 32° to 104° F (0° to 40° C) and can be stored in temperatures ranging from -40° to 158° F (-40° to 70° C). Its operational altitude reaches up to 2,000 meters, and it can handle relative humidity from 5% to 90% (non-condensing) during operation and 0% to 95% (non-condensing) when not in operation. The Juniper QFX3500-48S4Q switch is designed for organizations that require high-speed networking capabilities with a focus on efficiency, reliability, and flexibility. Its combination of high-performance hardware, versatile connectivity options, and robust environmental tolerances make it an excellent choice for supporting a wide range of data center networking needs.


Model NumberJuniper QFX3500-48S4Q
Ports Configuration48 SFP+/SFP, 4 QSFP+
Throughput1.28 Terabits per second, 960 Million packets per second
Switching TechniquesCut-through, Store-and-forward
Mass30.75 pounds (13.95 kilograms) with both power units and cooling fans
Airflow DirectionConfigurable: Front-to-Back, Back-to-Front
Connection LocationRear
SFP+ Port Count48
10GbE/GbE Dual-Mode Ports36
10GbE/2/4/8Gbps FC Dual-Mode Ports12
QSFP+ Port Count4
10GbE Interface per QSFP+ PortConfigurable: 4x10GbE
40Gbps Configuration per QSFP+ PortAvailable
Management PortsDual (Copper and Fiber)
Dimensions (HxWxD)1.75 in (4.45 cm) x 17.25 in (43.82 cm) x 28 in (71.12 cm)
Form Factor1U, fits 19-inch server rack
Power SuppliesDual, Redundant, Hot-Pluggable
Power InputAC: 110-240 V, Single Phase; DC: -36 V to -72 V
Operational Temperature Range32° to 104° F (0° to 40° C)
Storage Temperature Range-40° to 158° F (-40° to 70° C)
Maximum Operating AltitudeUp to 2,000 meters
Humidity During Operation5% to 90%, non-condensing
Humidity When Stored0% to 95%, non-condensing

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