Arista 7280R3 24-Port 400G Router-Switch

The Arista 7280R3 Series, represented by the DCS-7280DR3-24-F, is a deep-buffer, fixed-form-factor platform engineered for high-density 400 Gigabit Ethernet connectivity within modern data center and interconnect environments. Built on Arista's proven EOS (Extensible Operating System) software stack, the platform delivers line-rate Layer 2 and Layer 3 forwarding across all 24 QSFP-DD ports, supporting 400GbE natively while maintaining backward compatibility with 100GbE and 40GbE optics through breakout configurations. The deep packet buffer architecture is a defining characteristic of the R3 series, providing substantial on-chip buffering that absorbs traffic bursts inherent to large-scale data center fabrics and long-haul interconnect links without packet loss.

The DCS-7280DR3-24-F is purpose-designed for data center interconnect (DCI), IP/MPLS edge routing, and spine-layer switching roles where both forwarding scale and traffic engineering precision are critical. The platform supports a rich set of routing protocols including BGP, OSPF, IS-IS, and full MPLS label switching with segment routing (SR-MPLS and SRv6 capabilities surfaced through EOS), enabling seamless integration into service provider-grade and large enterprise backbone topologies. VXLAN bridging and routing, along with EVPN control plane support, allow the switch to participate natively in modern overlay fabric architectures.

Powered by Arista EOS, the DCS-7280DR3-24-F benefits from a single binary image, stateful fault containment, and a fully programmable Linux-based environment that supports streaming telemetry via gNMI/gRPC, CloudVision integration for network-wide automation and topology visibility, and zero-touch provisioning for rapid, consistent deployment at scale. The front-to-rear (-F suffix) airflow design accommodates hot-aisle/cold-aisle data center cabinet layouts, and the platform supports redundant, hot-swappable power supplies to meet enterprise availability requirements.

Ideal for

• Data Center Interconnect (DCI): Terminating 400GbE wavelengths between geographically distributed data centers with deep buffering to handle variable-latency WAN links without dropping bursty traffic.
• IP/MPLS Edge and Core Routing: Deploying as a high-throughput MPLS label edge router (LER) or label switch router (LSR) within enterprise WAN or co-location backbone fabrics leveraging segment routing.
• High-Density Spine Layer Switching: Serving as the spine tier in a leaf-spine Clos fabric where 400GbE uplinks from multiple leaf switches converge, requiring consistent low-latency forwarding and large routing table scale.
• EVPN/VXLAN Fabric Gateway: Acting as a border gateway between VXLAN overlay fabrics and external Layer 3 networks, providing EVPN route reflection and inter-VRF routing at scale.
• Financial and HPC Burst Absorption: Supporting latency-sensitive or compute-intensive workloads where deep on-chip buffers prevent microbursts from causing retransmissions across storage, HPC, or trading infrastructure interconnects.
• Network Telemetry Collection Point: Utilizing gNMI/gRPC streaming telemetry and CloudVision integration to provide per-interface, per-flow visibility across a large-scale campus or data center fabric for capacity planning and anomaly detection.

Technical specifications

Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.