• Gray metal Arista DCS-7280CR3A-24D12-F network switch with 24 100G ports 12 400G ports and ventilation slots
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Arista

Arista DCS-7280CR3A-24D12-F | 7280R3A 24-Port 100G + 12-Port 400G Switch, 7.2 Tbps

DCS-7280CR3A-24D12-F

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Description

The Arista DCS-7280CR3A-24D12-F is a high-performance data center switch delivering 7.2 Tbps throughput with 24x 100GbE QSFP ports and 12x 400GbE QSFP-DD ports. Designed for spine-leaf architectures and high-density aggregation, this 1RU switch features deep packet buffers, advanced Layer 2/3 capabilities, and support for VXLAN overlay networking. Ideal for large-scale data centers, cloud environments, and service provider networks requiring non-blocking performance and low latency.

Features

7.2 Tbps non-blocking switching capacity with wire-speed performance
- 8 GB deep packet buffer with virtual output queue (VOQ) architecture eliminating head-of-line blocking
- FlexRoute engine supporting scalable routing deployment with flexible table allocation
- Support for Layer 2 MLAG, Layer 3 ECMP, and EVPN-VXLAN overlay networking
- Advanced traffic management with weighted fair queuing and priority scheduling
- Accelerated sFlow for wire-rate flow sampling and telemetry
- Quality of Service (QoS) with granular traffic prioritization
- Comprehensive routing protocol support (BGP, OSPF, VRRP)
- VLAN support with 802.1Q tagging and advanced VLAN features
- Access Control Lists (ACLs) for security policy enforcement
- RADIUS and TACACS+ authentication for secure access control
- Hot-swappable redundant power supplies and fan modules for high availability
- Arista EOS operating system with advanced automation and programmability
- Support for precision timing and synchronous Ethernet
- Built-in 480 GB SSD for system logs and network state storage

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Port Configuration: 24x 100GbE QSFP ports, 12x 400GbE QSFP-DD ports
- Switching Capacity: 7.2 Tbps wire-speed performance
- Packet Buffer: 8 GB deep buffer with virtual output queue (VOQ) architecture
- Form Factor: 1RU rack-mountable (19 x 1.75 x 23.3 inches), 14.8 kg
- Airflow: Front-to-rear airflow (DCS-7280CR3A-24D12-F)
- Power Supplies: 2x 1500W AC hot-swappable redundant power supplies
- Storage: 480 GB SSD
- Operating Temperature: 0°C to 40°C
- Management: CLI, SNMP, Telnet, web interface
- Standards Compliance: Layer 2/3 routing protocols (OSPF, BGP), VLAN, ACL, RADIUS, TACACS+

FAQs

Q: What deployment scenarios is the DCS-7280CR3A-24D12-F best suited for?
A: This switch is ideal for spine-leaf data center architectures, high-performance compute clusters, cloud service provider networks, and AI/ML workloads requiring high-density 100G and 400G connectivity with non-blocking performance and deep buffers for burst absorption.

Q: What is the difference between the standard R3A, R3AM, and R3AK models?
A: The R3A provides standard features, the R3AM adds MACsec encryption and TunnelSec capabilities for secure connectivity, and the R3AK includes both encryption features plus large-scale routing tables supporting over 5M IP routes for Internet-scale deployments.

Q: Does this switch support flexible port speeds beyond 100G and 400G?
A: Yes, the 7280CR3A-24D12 supports flexible port speeds including 10G, 25G, 40G, 50G, 100G, and 400G using appropriate optics, making it adaptable for mixed-speed environments and migration scenarios.

Q: What routing and overlay protocols are supported?
A: The switch supports comprehensive Layer 3 routing including OSPF, BGP, ECMP, and EVPN-VXLAN overlay networking for modern data center fabrics, along with MLAG for active-active Layer 2 topologies.

Q: Is the airflow direction field-configurable?
A: No, the airflow direction is fixed at manufacturing. The -F suffix indicates front-to-rear airflow. For rear-to-front airflow, the DCS-7280CR3A-24D12-R model is available, and a configurable model (# suffix) is also offered.

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