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by Juniper
Product Line: Juniper EX4650 Series
Product Type: Ethernet Switch
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Product Description

The EX4650-48Y-AFI Juniper switch features 48 25GbE/10GbE/GbE SFP28/SFP+/SFP ports and 8 100GbE/40GbE QSFP28/QSFP+ ports, supporting a high-density networking environment. It offers a switching capacity of 2 Tbps (unidirectional)/4 Tbps (bidirectional) and a maximum throughput of 2976 Mpps with 64-byte packets, ensuring efficient data transfer. This device is equipped with dual redundant, hot-pluggable 650 W AC/DC power supplies, operates within a temperature range of 32°F to 104°F, and supports both cut-through and store-and-forward switching modes, making it adaptable for various deployment scenarios.

FAQs for the EX4650-48Y-AFI

  • What ports are available on this switch for connectivity?
    The switch includes 48 25GbE/10GbE/GbE SFP28/SFP+/SFP ports and 8 100GbE/40GbE QSFP28/QSFP+ ports.
  • How does the switch ensure high availability?
    It features redundant fans, dual (1+1) hot-pluggable 650 W AC/DC power supplies, and comes with 2 power cords to ensure continuous operation.
  • What are the physical dimensions and weight of the switch?
    The switch measures 1.72 x 17.36 x 20.48 inches (HxWxD) and weighs 23.7 lb (10.75 kg).
  • Can you describe the switching capacity and throughput of this device?
    The switching capacity is 2 Tbps (unidirectional)/4 Tbps (bidirectional), with a maximum throughput (with 64 byte packets) of 2976 Mpps (wire speed).
  • What are the power specifications of the switch?
    Power consumption ranges from 160 W at idle load to 450 W at max load, supported by 110-240 V single phase AC or -44 to -72 V DC power supply.
  • What are the environmental operating conditions for the switch?
    Operating temperature ranges from 32°F to 104°F, with a storage temperature of -40° to 158°F. It operates at altitudes up to 2,000 meters and relative humidity from 5% to 90% (noncondensing) during operation and 0% to 95% (noncondensing) during storage.
  • How does the switch support different deployment environments?
    It supports both front-to-back (airflow out) and back-to-front (airflow in) configurations to align with hot aisle and cold aisle deployments.
  • What is the maximum size for a jumbo frame on this switch?
    The switch supports jumbo frames up to 9216 bytes.
  • How many MAC addresses can the system support?
    The system can support up to 288,000 MAC addresses.
  • What switching modes are supported by this device?
    The switch supports both cut-through and store-and-forward switching modes.

Product Review

The Juniper EX4650-48Y-AFI offers a high switching capacity of 2 Tbps, supporting both cut-through and store-and-forward switching modes, catering to various network demands. Its flexibility is further enhanced by offering 48 25GbE/10GbE/GbE and 8 100GbE/40GbE ports, along with dual power supplies and varied airflow configurations for different deployment needs. However, its power consumption at maximum load (450W) might be a consideration for energy-conscious deployments, despite its efficient performance metrics.


The Juniper EX4650-48Y-AFI is a high-performance switch tailored for data center and high-end campus networks. This switch offers a comprehensive set of features to support a wide range of Ethernet speeds and connectivity options. It includes 48 ports that support 25GbE/10GbE/GbE speeds using SFP28/SFP+/SFP modules, and 8 ports that support 100GbE/40GbE speeds with QSFP28/QSFP+ modules. This flexibility allows for a broad compatibility range with various network designs and infrastructure upgrades, ensuring a future-proof investment. Equipped with redundant fans and two AC power supplies, the EX4650-48Y-AFI is designed for high availability and resilience. The package also includes two power cords, a 4-post rack mount kit, and options for back-to-front airflow, optimizing it for both hot aisle and cold aisle deployments in data centers. Its power consumption is efficiently managed, with a maximum load of 450 W, a typical load of 260 W, and an idle load of 160 W. Dual redundant and hot-pluggable 650 W AC/DC power supplies ensure uninterrupted operation, with support for both AC and DC power inputs. - Switching capacity is rated at 2 Tbps unidirectional and 4 Tbps bidirectional, with a maximum throughput of 2976 Mpps with 64-byte packets. This wire-speed performance ensures that the switch can handle large volumes of data with minimal latency. - The device supports both cut-through and store-and-forward switching modes, allowing for adaptable deployment based on specific network requirements. - The switch is designed to operate within a wide range of environmental conditions, including operating temperatures between 32°F and 104°F, and storage temperatures from -40° to 158°F. The physical dimensions of the EX4650-48Y-AFI make it suitable for standard rack installations, measuring 1.72 inches in height, 17.36 inches in width, and 20.48 inches in depth, with a weight of 23.7 lbs. This compact form factor, combined with its powerful features, makes it an ideal choice for space-constrained environments that require high-density, high-performance networking solutions. Furthermore, the switch supports up to 288,000 MAC addresses and jumbo frames up to 9216 bytes, enhancing its capability to efficiently process large volumes of data. The operating altitude of up to 2,000 meters and relative humidity ranges from 5% to 90% (non-condensing) for operating conditions, and 0% to 95% (non-condensing) for non-operating conditions, ensuring reliable performance across various environmental settings. In summary, the Juniper EX4650-48Y-AFI stands out as a versatile and efficient networking solution, engineered to meet the demanding requirements of modern data centers and high-end campus networks. Its comprehensive connectivity options, high switching capacity, and environmental resilience make it a valuable asset for any organization looking to optimize their network infrastructure.


Part Number Juniper EX4650-48Y-AFI
Ports Configuration 48 ports supporting 25GbE/10GbE/GbE with SFP28/SFP+/SFP interfaces, 8 ports for 100GbE/40GbE with QSFP28/QSFP+ interfaces
Cooling System Equipped with redundant fans
Power Supply Included are 2 AC power supplies, ensuring redundancy
Additional Components Package includes 2 power cords and a 4-post rack mount kit
Airflow Direction Configurable for either front-to-back or back-to-front airflow
Switching Capacity Capable of 2 Tbps (unidirectional)/4 Tbps (bidirectional) switching
Throughput Maximum throughput hits 2976 Mpps at wire speed
Weight 23.7 lb (10.75 kg)
Dimensions 1.72 x 17.36 x 20.48 inches (4.37 x 44.09 x 52.02 cm)
Switching Modes Supports both cut-through and store-and-forward
Power Usage 450 W at max load, 260 W typical, 160 W idle
Power Supplies Specification Two 650 W AC/DC hot-swappable and redundant supplies
AC Power Range 110-240 V single phase
DC Power Supply -44 to -72 V DC input
Minimum Operating Temperature 32°F
Maximum Operating Temperature 104°F
Storage Temperature Range -40° to 158°F (-40° to 70°C)
Maximum Operating Altitude Up to 2,000 meters
Non-Operating Humidity Range 0% to 95%, non-condensing
Operating Humidity Range 5% to 90%, non-condensing
MAC Address Capacity Supports up to 288,000 MAC addresses
Maximum Frame Size Support for frames up to 9216 bytes (Jumbo Frames)

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