Arista 7280R3A Series 400G Edge Router

The Arista 7280R3A Series is a purpose-built 400G edge routing platform engineered for organizations demanding carrier-grade routing scale in a data center form factor. Built on Arista's proven R3A ASIC architecture, the platform delivers non-blocking 400G line-rate forwarding with hardware support for extremely large IPv4 and IPv6 routing tables, making it equally capable at internet peering edges, WAN handoff points, and high-scale leaf/spine positions within large-scale data center fabrics. The series supports a broad range of 400G, 100G, and 40G port configurations in a compact 2U chassis, enabling operators to consolidate traditionally separate routing and switching functions into a single, manageable appliance.

The 7280R3A's forwarding plane leverages Arista's merchant silicon strategy combined with deep Programmable Flow Table (PFT) technology, providing flexible allocation of TCAM and forwarding resources between routing table entries, ACLs, and policy maps. The platform natively supports advanced BGP features including BGP-LU (Labeled Unicast), BGP-EVPN for multi-site data center interconnect (DCI), SR-MPLS, and Segment Routing with Traffic Engineering (SR-TE), enabling seamless integration with both legacy MPLS core networks and modern SDN-driven fabrics. Hardware-based VXLAN and MPLS encapsulation/decapsulation at 400G line rate eliminates the performance penalties historically associated with overlay networking at the WAN edge.

Arista EOS (Extensible Operating System) underpins the entire 7280R3A portfolio, providing a single unified network operating system across campus, data center, and edge environments. EOS's multi-agent architecture ensures process isolation and hitless software upgrades, while CloudVision delivers centralized telemetry, intent-based provisioning, and real-time streaming analytics via gNMI/gRPC. The platform's deep integration with Arista's AVA (Autonomous Virtual Assist) AI-driven network operations framework and its support for YANG-modeled APIs makes it a natural fit for organizations transitioning to fully automated, programmatically managed network infrastructure launched in 2025-Q2.

Ideal for

• Internet peering and BGP full-table edge routing at hyperscale data center and colocation facilities requiring millions of routing table entries
• Data center interconnect (DCI) over DWDM or dark fiber using BGP-EVPN with VXLAN or MPLS encapsulation at 400G line rate
• WAN edge aggregation consolidating MPLS, SR-MPLS, and broadband handoffs into a single high-throughput platform
• High-scale leaf layer deployments in spine-leaf fabrics serving AI/ML compute clusters with ultra-low latency and lossless forwarding
• Multi-tenant cloud and service provider environments requiring per-VRF routing table isolation with hardware-enforced segmentation
• Network telemetry and observability hubs leveraging gNMI streaming and sFlow at full line rate for real-time traffic engineering and anomaly detection

Technical specifications

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