Arista 7280R3A Series Universal Leaf Switch

The Arista 7280R3A Series is a universal leaf switch engineered for high-density, low-latency interconnect in modern data center and service provider networks. Featuring 72 ports of 100G capability with support for 400G breakout, the switch delivers deep packet buffering optimized for bursty traffic patterns common in telecom and financial trading environments. The R3A architecture combines fixed port density with flexible line-rate switching across 100G and 400G interfaces, enabling seamless multi-generational deployment strategies.

Built on Arista's merchant silicon approach, the 7280R3A integrates comprehensive in-band and out-of-band telemetry, enabling real-time network observability without performance compromise. The switch supports VXLAN, EVPN, and traditional routing protocols, making it suitable for both overlay and underlay network roles in complex hybrid topologies.

Widely deployed in tier-1 telecom networks and financial services infrastructure since Q1 2024, the 7280R3A addresses the convergence of high-speed interconnect requirements with operational demands for visibility and programmability in mission-critical environments.

Ideal for

• Leaf-spine fabric construction in hyperscale and service provider data centers requiring 100G/400G density
• Financial trading networks requiring deep buffers for market data distribution and order processing
• Telecom peering and aggregation layers with requirement for extensive buffer memory and line-rate throughput
• EVPN/VXLAN overlay networks supporting multi-tenant workload isolation and east-west traffic engineering
• High-frequency trading co-location environments with sub-microsecond latency requirements
• Content delivery and edge compute networks requiring stateless forwarding at line rate across multiple 400G uplinks

Technical specifications

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