• Gray metal arista dcs-7280cr3ak-24d12-s-r network switch with multiple 100g and 400g ports and ventilation slots
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Arista

Arista DCS-7280CR3AK-24D12-S-R | 7280R3A 24-Port 100G + 12-Port 400G Switch, 7.2Tbps

DCS-7280CR3AK-24D12-S-R

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Description

The Arista DCS-7280CR3AK-24D12-S-R is a high-performance data center switch router engineered for demanding cloud, service provider, and enterprise environments. Delivering 7.2 Tbps switching capacity and 8GB deep packet buffers, this 1RU platform combines 24x 100GbE QSFP28 ports with 12x 400GbE QSFP-DD ports for maximum flexibility. With large-scale routing support, wire-speed TunnelSec encryption, secure boot, and rear-to-front airflow, it excels in leaf-spine architectures, DCI, and high-bandwidth applications requiring advanced security and scalability.

Features

Arista EOS (Extensible Operating System) - Linux-based modular architecture
- Non-blocking architecture with wire-speed Layer 2 and Layer 3 forwarding
- Deep 8GB packet buffers for superior burst absorption and lossless operation
- FlexRoute engine supporting large routing tables (over 256K routes, scalable to 5M+ with profiles)
- Wire-speed TunnelSec AES-256-GCM encryption for Layer 2 and Layer 3 traffic
- IEEE 802.1AE MACsec for line-rate frame encryption and authentication
- EVPN-VXLAN for overlay networking and multi-tenancy
- BGP, OSPF, ISIS, MPLS, and Segment Routing support
- Multi-Chassis Link Aggregation (MLAG) for active-active topologies
- Algorithmic ACLs for scalable policy-based forwarding and access control
- Accelerated sFlow and IPFIX for wire-speed telemetry and monitoring
- Inband Network Telemetry (INT) for real-time per-flow visibility
- IEEE 1588v2 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE)
- Quality of Service (QoS) with priority queuing and traffic shaping
- Redundant hot-swappable power supplies and field-replaceable fans
- CloudVision integration for network-wide automation and zero-touch provisioning
- REST API and streaming telemetry for DevOps integration
- NEBS Level 3 compliant for carrier-grade reliability

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Total Ports: 24x 100GbE QSFP28 + 12x 400GbE QSFP-DD (36 total ports)
- Port Speeds: Multi-rate support for 10G/25G/40G/50G/100G/200G/400G via appropriate optics
- Switching Capacity: 7.2 Tbps
- Forwarding Rate: 2.7 billion packets per second (Bpps)
- Packet Buffer: 8GB deep buffer for burst absorption
- Routing Capacity: Large route table support (over 256K routes with FlexRoute engine)
- Memory: 64GB system memory, 480GB SSD
- Encryption: Wire-speed AES-256-GCM TunnelSec Layer 2/3 encryption, IEEE 802.1AE MACsec
- Layer 3 Features: IPv4/IPv6 routing, OSPF, BGP, EVPN-VXLAN, MPLS, Segment Routing
- Management: CLI, Web GUI, SNMP, REST API, Arista EOS, CloudVision integration
- Power Supply: Dual 1500W AC power supplies (redundant, included)
- Airflow: Rear-to-front (R-F) cooling
- Dimensions: 48.3 x 4.4 x 59.2 cm (19" x 1.75" x 23.3") - 1RU
- Weight: 14.8 kg (32.6 lbs)
- Power Consumption: Typical 346W operational
- Security Features: Secure boot enabled, Algorithmic ACLs, 802.1X authentication
- Timing: Synchronous Ethernet (SyncE), IEEE 1588v2 PTP
- Certifications: NEBS compliant, industry-standard environmental certifications

FAQs

Q: What is the difference between the R3A, R3AM, and R3AK variants?
A: The 7280R3A provides standard scale and features. The R3AM adds enhanced MACsec encryption. The R3AK variant (this model) includes both large-scale routing tables supporting over 256K routes with FlexRoute engine, plus TunnelSec Layer 2/3 encryption and Algorithmic ACLs for advanced security and policy-based forwarding.

Q: What does the -S-R suffix indicate in this model?
A: The -S indicates secure boot is enabled for enhanced security. The -R indicates rear-to-front airflow configuration. The switch comes with dual redundant 1500W AC power supplies pre-installed. Alternative airflow configurations include -F for front-to-rear.

Q: Can the QSFP28 ports support lower speed optics?
A: Yes, the 24x QSFP28 ports support multi-rate operation including 100G, 50G, 40G, 25G, and 10G using appropriate transceivers or breakout cables. The 12x QSFP-DD ports support 400G, 200G, and 100G, providing exceptional deployment flexibility.

Q: What are the typical use cases for this switch?
A: Ideal for high-performance leaf-spine data center fabrics, data center interconnect (DCI), cloud provider edge and aggregation layers, AI/ML workloads requiring low latency and deep buffers, content delivery networks (CDN), IP storage networks, and secure multi-tenant environments requiring hardware-based encryption.

Q: Does this switch require additional software licensing?
A: The switch runs Arista EOS operating system. While base functionality is included, some advanced features and CloudVision management may require additional software subscriptions. Contact Arista or an authorized partner for specific licensing requirements based on your deployment needs.

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