Arista 7280R3A Series Universal Spine Router
Brand: Arista | Category: Network Switches
SKU: DCS-7280R3A-48YC12 | Part #: DCS-7280R3A-48YC12 | MPN: DCS-7280R3A-48YC12
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About the Arista 7280R3A Series Universal Spine Router
The Arista 7280R3A Series Universal Spine Router delivers a switching capacity of 7.2 Tbps with a forwarding rate of up to 4.8 Bpps, providing line-rate performance for demanding enterprise and cloud-scale networks. This 2RU form factor device, identified by manufacturer part number DCS-7280R3A-48YC12, combines exceptional throughput with flexible port density to serve as a high-performance spine or core switch in modern data center architectures.
The 7280R3A architecture offers 48 × 25GbE SFP28 ports, 8 × 100GbE QSFP100 ports, and 4 × 400GbE QSFP-DD ports, accommodating mixed-speed connectivity across leaf-and-spine topologies. Arista EOS powers advanced routing capabilities including BGP, OSPF, IS-IS, RIP, PIM, and SR-MPLS, while overlay protocols such as VXLAN and EVPN enable flexible virtualization. The device supports up to 512-way ECMP, a MAC table of 288,000 entries, and IPv4 routing for up to 4 million entries with algorithmic TCAM, making it suitable for large-scale multi-tenant and hybrid cloud environments. Dual redundant hot-swappable AC or DC power supplies and hot-swappable fan modules with configurable airflow ensure operational resilience. Arista CloudVision integration, OpenConfig, NETCONF/YANG, gRPC, and REST API management, combined with streaming telemetry, sFlow, IPFIX, and hardware timestamping, deliver comprehensive observability and automation.
Network engineers and infrastructure teams responsible for spine-layer architecture, particularly those operating high-density interconnect fabrics or scaling multi-cloud deployments, will recognize the 7280R3A's role in eliminating bottlenecks at the core. For organizations evaluating enterprise-grade spine switching with investment in proven Arista technology, the DCS-7280R3A-48YC12 offers proven reliability and feature depth. Contact Omnixon Global to request a detailed quotation and technical consultation for your spine switching requirements.
Technical Specifications
| Brand | Arista |
| Category | Network Switches |
| SKU | DCS-7280R3A-48YC12 |
| Part Number | DCS-7280R3A-48YC12 |
| Condition | New |
| Manufacturer Part Number | DCS-7280R3A-48YC12 |
| Series | 7280R3A |
| Form Factor | 2RU |
| Total Switching Capacity | 7.2 Tbps |
| Forwarding Rate | Up to 4.8 Bpps |
| 25GbE SFP28 Ports | 48 |
| 100GbE QSFP100 Ports | 8 |
| 400GbE QSFP-DD Ports | 4 |
| Management Ports | 1 x 10/100/1000BASE-T out-of-band management, 1 x RJ-45 console |
| Operating System | Arista EOS |
| Layer 3 Routing Protocols | BGP, OSPF, IS-IS, RIP, PIM, SR-MPLS |
| Overlay Protocols | VXLAN, EVPN |
| ECMP Support | Up to 512-way ECMP |
| Power Supply | Dual redundant hot-swappable AC or DC power supplies |
| Fan Modules | Hot-swappable fan modules with front-to-rear or rear-to-front airflow options |
| Telemetry | Streaming telemetry, sFlow, IPFIX, hardware timestamping |
| Management Integration | Arista CloudVision, OpenConfig, NETCONF/YANG, gRPC, REST API |
| MAC Table Size | 288,000 entries |
| IPv4 Route Table | Up to 4 million entries (with algorithmic TCAM) |
| IPv6 Route Table | Up to 2 million entries (with algorithmic TCAM) |
| Operating Temperature | 0°C to 45°C |
Frequently Asked Questions about Arista 7280R3A Series Universal Spine Router
Does the Arista 7280R3A Series Universal Spine Router support our SFP transceivers?
Most enterprise switches ship without transceivers; we quote vendor-matched optics alongside the switch (Cisco-genuine for Catalyst/Nexus, HPE/Aruba-genuine for CX, Juniper-genuine for QFX/EX). Third-party MSA-compatible options are also available at lower cost — specify preference in the RFQ.
Do you provide stacking / VPC / MLAG configuration help?
Yes — our network engineers can pre-stage stacking, VPC pairs, MLAG, EVPN-VXLAN, or fabric extender configurations in advance, or provide remote commissioning. Add commissioning to your RFQ.
What software licensing is included?
Switch software licensing varies by vendor. Cisco DNA / Cisco DCNM, Aruba CX licensing tiers, Juniper Premium, NVIDIA Cumulus — we quote the licensing tier matched to your features (BGP-EVPN, telemetry, automation). No surprises later.
Is the support global?
Yes — manufacturer hardware support is global (return-to-vendor or advance replacement depending on tier). For 24x7 same-day on-site replacement, attach a SmartNet / Foundation Care / J-Care contract during quoting.