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by Juniper
Product Line: Juniper EX4500 Series
Product Type: Ethernet Switch
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Product Description

The EX4500-40F-BF-C Juniper switch features 40x 10 Gigabit Ethernet SFP+ network ports and supports both GbE and 10GbE SFP/SFP+ with back-to-front airflow, designed for high-density networking environments. It boasts a switching capacity of 480 Gbps and a forwarding rate of 714 Mpps, along with hardware support for Data Center Bridging and support for eight PFC (802.1Qbb) queues. Additional specifications include a 128 Gbps Virtual Chassis module with two 64 Gbps ports, a MAC address table size of 32,000, and support for jumbo frames up to 9,216 bytes, ensuring efficient data center operations.

FAQs for the EX4500-40F-BF-C

  • What is the switching capacity of the 40-port GbE/10GbE SFP/SFP+ switch?
    The switching capacity is 480 Gbps.
  • How many network ports does this device include for connectivity?
    The device includes 40x 10 Gigabit Ethernet SFP+ network ports.
  • Does the switch support Data Center Bridging (DCB)?
    Yes, it supports Data Center Bridging with hardware support.
  • What are the dimensions of the switch?
    Height: 3.5 in (8.9 cm); Width: 17.25 in (43.8 cm); Depth: 21.1 in (53.6 cm).
  • What type of airflow configuration does it have?
    It has a back-to-front airflow configuration.
  • Can it be mounted in both two-post and four-post racks?
    Yes, it offers versatile mounting options for both two- and four-post 19-inch server racks.
  • What is the MAC address table size?
    The MAC address table size is 32,000.
  • What is the maximum operating temperature?
    The maximum operating temperature is 113° F.
  • Does it support jumbo frames?
    Yes, it supports jumbo frames up to 9,216 bytes.
  • What are the management port options available on this switch?
    Management ports include 1x RJ-45 Serial Console, 1x Gigabit Management RJ-45, and 1x USB port.

Product Review

The Juniper EX4500-40F-BF-C switch offers high performance with a 480 Gbps switching capacity and a 714 Mpps forwarding rate, suitable for demanding data center environments. However, its 40-port limitation might be restrictive for larger networks looking to scale. Additionally, while it supports Data Center Bridging and eight PFC queues for improved network efficiency and QoS, the physical dimensions and weight may pose challenges for deployment in space-constrained racks.


The Juniper EX4500-40F-BF-C is a high-performance Ethernet switch designed for data center and high-end campus networks. It features 40 ports that support both Gigabit Ethernet and 10 Gigabit Ethernet SFP/SFP+, providing flexibility for uplink or downlink connections. This switch is engineered with back-to-front airflow, making it suitable for various installation environments by ensuring optimal cooling efficiency. Key hardware capabilities include support for Data Center Bridging (DCB), a critical feature for modern data centers that require lossless Ethernet frameworks for handling storage and server traffic. The DCB support includes hardware readiness for eight Priority-based Flow Control (PFC) queues as per the 802.1Qbb standard, which is essential for managing congestion and ensuring that critical data traffic is prioritized appropriately. The Juniper EX4500-40F-BF-C is equipped with a range of ports for management and connectivity: - Network Ports: 40x 10 Gigabit Ethernet SFP+ for high-speed data transfer. - Management Ports: Includes a RJ-45 Serial Console, a Gigabit Management RJ-45, and a USB port for versatile management options. In terms of performance, the switch boasts a switching capacity of 480 Gbps and a high forwarding rate of 714 million packets per second (Mpps), ensuring rapid data transmission across the network. The inclusion of a 128 Gbps Virtual Chassis module with 2 x 64 Gbps ports allows for easy and scalable network expansion. Physical specifications are as follows: - Dimensions: Height of 3.5 inches (8.9 cm) or 2U, a width of 17.25 inches (43.8 cm), and a depth of 21.1 inches (53.6 cm). - Weight: The unit weighs 37 lb (17 kg) when equipped with one AC and DC power supply. - The switch offers versatile mounting options, compatible with both two- and four-post 19-inch server racks. Key technical specifications include: - A MAC Address Table Size of 32,000. - Support for jumbo frames up to 9,216 bytes. - Operating temperature ranges from 32° F to 113° F, with storage temperatures spanning from -40° F to 158° F. - The operating altitude reaches up to 10,000 ft (3,049 m), and non-operating altitude up to 16,000 ft (4,877 m). - Relative humidity levels during operation and non-operation vary from 10% to 85% and 0% to 95% (non-condensing), respectively.
  • Supports high-density, multi-rate 10GbE environments.
  • Equipped with advanced features for network optimization and security.
  • Designed for reliability and easy management in dynamic network environments.
The Juniper EX4500-40F-BF-C is tailored for organizations seeking a scalable, high-performance switching solution that can accommodate the growing demands of modern data centers and complex campus networks. Its comprehensive set of features and specifications make it a compelling choice for network administrators looking to optimize their infrastructure for both current and future networking needs.


Item Number Juniper EX4500-40F-BF-C
Manufacturer Juniper
Network Interface 40x 10GbE SFP/SFP+ with airflow from back to front
DCB Capability Compatible with Data Center Bridging
PFC Queues Support Supports eight Priority Flow Control (802.1Qbb) queues
Ports for Administration 1x Serial Console RJ-45, 1x RJ-45 Gigabit Management, 1x USB port
Switching Throughput 480 Gbps
Virtual Chassis Bandwidth 128 Gbps, inclusive of 2 ports at 64 Gbps each
Dimensions (H x W x D) 3.5 in (8.9 cm) x 17.25 in (43.8 cm) x 21.1 in (53.6 cm); 2U rack unit
Mass 37 lb (17 kg) with one power supply unit, AC or DC
Mounting Flexibility Compatible with both two-post and four-post 19-inch server racks
Packets Forwarding Rate 714 Million packets per second (Mpps)
MAC Address Capacity 32,000 entries
Maximum Frame Size 9,216 bytes
Min Operating Temperature 32° F (0° C)
Max Operating Temperature 113° F (45° C)
Min Storage Temperature -40° F (-40° C)
Max Storage Temperature 158° F (70° C)
Maximum Operating Altitude 10,000 ft (3,049 m)
Maximum Non-operating Altitude 16,000 ft (4,877 m)
Humidity (Non-operating) 0% to 95%, non-condensing
Humidity (Operating) 10% to 85%, non-condensing

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