Arista 7280R3 Series

Brand: Arista | Category: Network Switches

SKU: DCS-7280CR3-32P4 | Part #: DCS-7280CR3-32P4 | MPN: DCS-7280CR3-32P4

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The Arista DCS-7280CR3-32P4 operates as a high-density spine or aggregation switch built around a control-plane model that supports full Layer 2 and Layer 3 forwarding with BGP-EVPN overlay capability. This positioning makes the platform suitable for environments ranging from traditional three-tier fabrics to modern IP-Clos architectures and software-defined data-centre overlays. Network engineers designing hybrid cloud interconnect, multi-tenant virtualization, or segment-routed traffic engineering will find this Arista platform capable of supporting VXLAN encapsulation and decapsulation in hardware, eliminating the CPU overhead typical of software tunnel termination. The ability to run BGP-EVPN as the overlay control plane means the switch can operate as a border leaf, core spine, or fabric anchor—the specific role determined by your routing design rather than by hardware limitation.

Built in a compact 2RU form factor, the DCS-7280CR3-32P4 provides 32 ports of 100GbE (QSFP100) alongside four 400GbE (QSFP-DD) ports, giving operators flexibility in port speed across a single chassis. The switch uses a merchant-silicon, single-chip forwarding architecture that delivers wire-rate hardware forwarding for both Layer 2 and Layer 3 traffic. This means no packet buffering delays, no CPU processing bottlenecks, and predictable latency characteristics—essential when your data centre fabric carries both latency-sensitive trading workloads and bulk AI training jobs. Arista's implementation of IEEE 1588-2008 PTP as a Boundary Clock and Transparent Clock option ensures that if your environment demands sub-microsecond timing synchronization (common in high-frequency finance or distributed ML training), the switch can participate in your timing infrastructure without requiring external timing appliances.

The DCS-7280CR3-32P4 runs Arista EOS, an operating system designed from the ground up for programmatic control and observability. Network automation teams will value the native support for OpenConfig, NETCONF/YANG, gNMI, gRPC, REST, and eAPI—allowing you to avoid proprietary CLI scraping and instead consume standardized data models. Telemetry is built in through Arista DANZ (Detect and Alert Network Zones), sFlow, and ERSPAN, meaning you can stream performance metrics, packet samples, and mirrored traffic directly to your analytics platform without dedicated span ports. The switch supports In-Service Software Upgrade (ISSU) with hitless failover, allowing you to patch security vulnerabilities or deploy new features during business hours without draining traffic or reconfiguring edge devices. For organizations using CloudVision as their fabric-wide management and analytics plane, the 7280R3 integrates natively—no additional agents, licensing, or configuration overhead.

Routing protocol support on this platform spans the full spectrum: BGP (clearly essential), OSPF, IS-IS, EIGRP, RIP, PIM for multicast, IGMP, MPLS, and modern segment-routing variants including SR-MPLS and SRv6. This breadth means the switch can serve as a bridge between legacy IGP-based fabrics and next-generation intent-based networking architectures without requiring separate appliances. The redundant, hot-swappable power supplies and hot-swappable fan modules with directional airflow options address the thermal and availability requirements of modern data centres. A network architecture team or infrastructure engineer planning capacity for a growing multi-region fabric will recognize that hardware refresh becomes a matter of module replacement rather than full chassis decommissioning.

Omnixon Global supplies the Arista 7280R3 series across the GCC, South Asia, and EMEA regions, serving data-centre operators, hyperscaler build-outs, enterprise network teams, and AI infrastructure projects. Our inventory and logistics partnerships in Dubai and Abu Dhabi ensure rapid deployment support for brownfield upgrades and greenfield fabric builds. For detailed configuration guidance, pricing, lead times, and technical validation on your topology, please submit an RFQ through our platform or contact our enterprise accounts team.

Interface & Forwarding Capabilities

• 32 × 100GbE QSFP100 ports and 4 × 400GbE QSFP-DD ports in a 2RU chassis
• Single-chip merchant-silicon architecture with wire-rate Layer 2 and Layer 3 forwarding
• Hardware-accelerated VXLAN encapsulation/decapsulation for overlay networks
• BGP-EVPN control plane with support for SR-MPLS and SRv6 routing
• IEEE 1588-2008 PTP Boundary and Transparent Clock for sub-microsecond timing synchronization
• Full routing protocol suite: BGP, OSPF, IS-IS, EIGRP, MPLS, PIM, IGMP
• Programmable APIs (OpenConfig, NETCONF/YANG, gNMI, gRPC, REST, eAPI) and native CloudVision integration
• ISSU and hitless failover with redundant hot-swappable power and fan modules