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by Arista
Product Line: Arista 7280QR Series
Product Type: Data Center Switch
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Product Description

The DCS-7280QR-C36-R Arista switch features 24x40GbE QSFP+ and 12x100GbE QSFP ports, supporting a maximum of 36 40GbE, 48 25GbE, and 144 10GbE ports, designed for high-density networking environments. It delivers a throughput of 4.32 Tbps and a packet processing rate of 1.44 Bpps, with a latency starting from 3.8 us, powered by a Quad-Core x86 CPU with 8 GB of system memory, expandable to 32 GB. The unit is equipped with hot-swappable power supplies and fans, ensuring uninterrupted operation, and has a power consumption range between 324W and 499W, fitting in a 19 x 1.75 x 20.6” space, and weighing 21lbs (9.7kg).

FAQs for the DCS-7280QR-C36-R

  • What is the maximum number of 40GbE ports supported by the switch?
    The switch supports up to 36 40GbE ports.
  • Can the 12x100GbE QSFP switch accommodate 25GbE connections?
    Yes, the switch can accommodate up to 48 25GbE connections.
  • What is the throughput and packets per second rate of this device?
    The device offers a throughput of 4.32 Tbps and can handle 1.44 billion packets per second.
  • Does the switch feature hot-swappable components?
    Yes, it includes 2 hot-swap power supplies (1+1 redundant) and 4 hot-swappable fans (N+1 redundant).
  • What are the power requirements for the 24x40GbE QSFP+ configuration?
    It requires 2x AC power supplies and 2xC13-C14 cords, with a typical/max power draw of 324W / 499W.
  • What type of CPU and how much system memory does the switch have?
    The switch is equipped with a Quad-Core x86 CPU and 8 GB of system memory, which is expandable to 32 GB.
  • How does the switch's air flow direction impact installation?
    The switch uses a rear to front air flow direction, affecting its placement and cooling strategy in data centers.
  • What are the size and weight specifications for the switch?
    The switch measures 19 x 1.75 x 20.6 inches (48.3 x 4.4 x 52.3cm) and weighs 21lbs (9.7kg).
  • Can the switch be managed remotely?
    Yes, it includes 1x 100/1000 management port and 1x RS-232 serial port (RJ-45) for remote management.
  • What is the latency range of the 12x100GbE QSFP switch?
    Latency ranges from 3.8 microseconds, depending on the network configuration and conditions.

Product Review

The Arista DCS-7280QR-C36-R offers high-density connectivity with its 24x40GbE QSFP+ and 12x100GbE QSFP ports, accommodating a wide range of configurations for both small and large network environments, and supports a maximum throughput of 4.32 Tbps with low latency starting from 3.8 microseconds, ensuring efficient data processing and transmission. However, its initial system memory of 8 GB, while upgradeable to 32 GB, might be limiting for memory-intensive applications without an upgrade. Additionally, the switch's design for rear to front air flow and inclusion of redundant power supplies and hot-swappable fans enhance its reliability and ease of maintenance in data center environments.


The Arista DCS-7280QR-C36-R is a high-performance switch designed to meet the demands of modern data centers, offering a blend of speed, scalability, and efficiency. It features 24x40GbE QSFP+ and 12x100GbE QSFP ports, providing a versatile platform that supports a wide range of high-speed connections. This switch is engineered to facilitate high-density networking environments with its capacity for up to 36 40GbE ports, 48 25GbE ports, or 144 10GbE ports, making it a suitable choice for data centers requiring high throughput and flexibility in their network architecture. With a throughput of 4.32 terabits per second (Tbps) and the capability to process up to 1.44 billion packets per second (Bpps), the Arista DCS-7280QR-C36-R ensures efficient data handling, minimizing bottlenecks in high-traffic scenarios. Its low latency, starting from 3.8 microseconds, enhances the performance of time-sensitive applications, providing a reliable solution for enterprises and service providers alike. The switch is powered by a quad-core x86 CPU, with a standard system memory of 8 GB, upgradeable to 32 GB, to handle the demands of processing and routing. Storage needs are met with a 4 GB flash memory. Connectivity and management are straightforward, thanks to the inclusion of a 100/1000 management port and a RS-232 serial port (RJ-45), along with a single USB port for additional interface options. Designed for reliability, the Arista DCS-7280QR-C36-R features hot-swappable power supplies and fans, ensuring uninterrupted operation and easy maintenance. The system is equipped with two AC power supplies and includes two C13-C14 cords, providing redundancy and operational continuity. The hot-swap components are designed for 1+1 redundancy in power supplies and N+1 redundancy in fans, enhancing the system's resilience against hardware failures. Measuring 19 x 1.75 x 20.6 inches and weighing 21lbs, the switch is compact enough for efficient use of rack space in dense network environments. Its design supports rear to front air flow, optimizing cooling for the high-performance components housed within. The typical power draw is 324W, with a maximum of 499W under full load, indicating efficient power usage relative to its performance capabilities. Key specifications include: -
  • Throughput (fd) of 4.32 Tbps
  • Packets/Second of 1.44 Bpps
  • Latency from 3.8 microseconds
The power supply options are versatile, with 745W AC and 1900W DC available, catering to various deployment environments and ensuring the switch can be powered effectively in different geographical regions. In summary, the Arista DCS-7280QR-C36-R is a feature-rich, high-capacity switch that caters to the needs of demanding data center environments. Its broad compatibility with various Ethernet speeds, combined with high throughput and low-latency performance, makes it an ideal solution for organizations looking to optimize their network infrastructure for speed, reliability, and efficiency.


Item Number and Manufacturer Arista DCS-7280QR-C36-R
Port Configuration 24 ports of 40GbE QSFP+, 12 ports of 100GbE QSFP
Airflow Direction Back to front
Power Supply Units 2 AC units
Power Cables 2 C13-C14 cables
Maximum Ports for 40GbE 36
Maximum Ports for 25GbE 48
Maximum Ports for 10GbE 144
Forwarding Rate 4.32 Terabits per second
Processing Capacity 1.44 Billion packets per second
Network Latency Minimum of 3.8 microseconds
Processor Type Quad-Core x86 CPU
Main Memory 8 GB, upgradeable to 32 GB
USB Interface Single port
Internal Storage 4 GB Flash
Management Interface One 100/1000 Base-T port
Serial Interface One RS-232 port (RJ-45)
Replaceable Power Units Yes, 2 with 1+1 redundancy
Modular Fans 4, with N+1 redundancy
Dimensions 19 x 1.75 x 20.6 inches (48.3 x 4.4 x 52.3 cm)
Power Consumption Typical: 324W, Maximum: 499W
Device Weight 21 pounds (9.7 kg)
Available Power Supply Ratings 745W for AC, 1900W for DC

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