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by Arista
Product Line: Arista 7280RA Series
Product Type: Data Center Switches
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Product Description

The DCS-7280QRA-C36SM-FLX-R Arista switch router features 36x40GbE QSFP+ ports, expandable to 18x40GbE & 12x100GbE, or up to 60 wire-speed 100GbE ports, supporting high-density networking environments. It achieves up to 12 terabits per second throughput and 5.76 billion packets per second, ensuring efficient data processing and wire speed L2 and L3 forwarding. The device includes ultra-deep packet buffers up to 32GB, virtual output queues per port to prevent congestion, and offers front-to-rear or rear-to-front cooling, with redundant & hot-swap power and fans, optimized for high-performance and reliability in data centers.

FAQs for the DCS-7280QRA-C36SM-FLX-R

  • What is the port configuration of the 36x40GbE QSFP+ / 18x40GbE & 12x100GbE switch router?
    The switch router supports 36x40GbE QSFP+ ports, which can be divided into 18x40GbE and 12x100GbE ports.
  • Does the 7280TR switch support AlgoMatch technology?
    No, AlgoMatch technology is not supported on the 7280TR switch model.
  • What memory type is used in these networking devices?
    The devices utilize epxn memory for efficient data processing.
  • How does the 7280SR ensure efficient cooling?
    The 7280SR employs front-to-rear air cooling to maintain optimal operating temperatures.
  • What are the key features of the QSFP100 modules?
    QSFP100 modules offer flexibility with Quad 10GbE or 25GbE mode for enhanced network performance.
  • What maximum throughput can be achieved with these switches?
    These switches can achieve up to 12 terabits per second, supporting wire-speed L2 and L3 forwarding.
  • How does the virtual output queue feature benefit network performance?
    Virtual Output Queues per port help eliminate head-of-line blocking, improving network efficiency.
  • Are the power supplies in these devices efficient?
    Yes, the power supplies are over 94% efficient, ensuring energy savings and reduced operational costs.
  • What are the physical characteristics of these networking devices?
    These devices weigh 47.3lbs (21.5kg) and support NEBS compliance for reliable operation in various environments.
  • What EOS version is required for these networking devices?
    A minimum of EOS version 4.18.1 is required for operating these networking devices.

Product Review

The Arista DCS-7280QRA-C36SM-FLX-R offers high flexibility with its mix of 40GbE and 100GbE ports, supporting up to 60 wire-speed 100GbE ports, making it suitable for high-density networking environments. However, it lacks features like AlgoMatch and accelerated sFlow, which may limit its utility in scenarios requiring advanced packet matching and enhanced network monitoring. Its design includes redundant, hot-swappable power supplies and fans, along with energy-efficient power supplies over 94% efficiency, ensuring reliability and reduced operational costs.


The Arista DCS-7280QRA-C36SM-FLX-R is a high-capacity, flexible switch router designed to meet the demands of data-intensive environments. This device offers a versatile combination of 36x40GbE QSFP+ ports, which can be configured as either 18x40GbE or 12x100GbE ports, providing scalability and flexibility for various network architectures. Additionally, the product line includes the 7280TR and 7280SR models, each offering 48x1/10GbE and 6x100GbE ports, catering to diverse networking requirements. At the heart of the DCS-7280QRA-C36SM-FLX-R's performance is its capability to support up to 60 wire-speed 100GbE ports, coupled with an impressive switching capacity of up to 12 terabits per second. This ensures high-speed data transfer and efficient handling of network traffic, even in the most demanding scenarios. The device's processing power is equally notable, with the ability to process up to 5.76 billion packets per second, facilitating wire-speed Layer 2 and Layer 3 forwarding without compromise. The QSFP100 ports on the DCS-7280QRA-C36SM-FLX-R are designed for flexibility, offering Quad 10GbE or 25GbE modes to accommodate various connectivity needs. Moreover, the switch router features an ultra-deep packet buffer of up to 32GB, which, combined with Virtual Output Queues per port, effectively eliminates head-of-line blocking, ensuring smooth traffic flow even during peak loads. Key hardware specifications include: -
  • Front-to-rear or rear-to-front cooling options, accommodating different rack setups and ensuring optimal thermal management.
  • Redundant and hot-swappable power supplies and fans, enhancing system reliability and minimizing downtime during maintenance.
  • Over 94% efficient power supplies, reducing operational costs and supporting energy-efficient network operations.
Weighing 47.3lbs (21.5kg), the DCS-7280QRA-C36SM-FLX-R is built to comply with NEBS standards, ensuring robust performance in various environmental conditions. The device supports fan tray FAN-7002H-F/R for enhanced cooling and is compatible with both 1900W AC and DC power supplies, providing flexibility in power sourcing. From a software perspective, the switch router is designed to work with the EOS feature licenses Group 3, requiring a minimum of EOS version 4.18.1. This ensures access to a wide range of advanced features and functionalities, tailored to meet the needs of modern network environments. Despite its advanced capabilities, the DCS-7280QRA-C36SM-FLX-R does not support AlgoMatch or accelerated sFlow, focusing instead on delivering high-speed, reliable connectivity and efficient packet processing capabilities. This makes it an ideal solution for enterprises, data centers, and service providers seeking a high-performance networking platform that combines flexibility, scalability, and efficiency.


Item CodeDCS-7280QRA-C36SM-FLX-R
Connectivity36x40GbE QSFP+ ports or 18x40GbE & 12x100GbE configuration
TechnologyAlgoMatch for advanced packet matching
MemoryExpanded packet memory
Cooling DirectionAirflow from front to rear
Model 7280TR48 x 1/10GbE with 6x 100GbE interfaces
Model 7280SR48 x 1/10GbE with 6x 100GbE interfaces
Max 100GbE Ports60 at full line-rate
Switching Capacity12 Tbps
Forwarding Rate5.76 Bpps
Forwarding CapabilityFull L2 and L3 operations at line rate
QSFP100 ModesSupports Quad 10GbE or 25GbE
Packet Buffer SizeMaximum 32GB
VOQs per PortPrevents head-of-line blocking with dedicated queues
Power EfficiencyOver 94% power conversion efficiency
System RedundancyRedundant, hot-swappable power supplies and fans
Cooling OptionsConfigurable for front-to-rear or rear-to-front airflow
Unit Weight47.3lbs (21.5kg)
NEBS ComplianceYes
Fan ModuleFAN-7002H-F/R
Power Options1900W AC and DC power supplies
AlgoMatch SupportNo
sFlow AccelerationNo
License LevelEOS Feature License Group 3
Minimum EOS Version4.18.1

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