• Gray metal Arista DCS-7280CR3AK-24D12-F network switch with multiple 100G and 400G ports and ventilation slots shown from back side
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Arista

Arista DCS-7280CR3AK-24D12-F | 7280R3A 24-Port 100G + 12-Port 400G Switch, 9.6 Tbps

DCS-7280CR3AK-24D12-F

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Description

The Arista DCS-7280CR3AK-24D12-F is a high-performance data center switch router featuring 24x100GbE QSFP and 12x400GbE QSFP-DD ports with 9.6 Tbps switching capacity. Designed for large-scale cloud, service provider, and enterprise data centers, it delivers advanced Layer 2 and Layer 3 capabilities with large routing tables supporting over 5 million routes, 8GB packet buffers, and line-rate TunnelSec encryption. The switch includes front-to-rear airflow and dual AC power supplies for optimal thermal management and reliability in demanding environments.

Features

Wire-speed Layer 2 and Layer 3 switching with non-blocking architecture
- Advanced routing protocols: BGP, OSPF, IS-IS, MPLS, Segment Routing, EVPN-VXLAN
- FlexRoute engine with algorithmic forwarding for internet-scale routing (5M+ routes)
- Arista TunnelSec for line-rate strong encryption at Layer 2, Layer 3, and overlay
- Algorithmic ACLs for flexible, high-scale access control and policy-based forwarding
- Accelerated sFlow and IPFIX for comprehensive network telemetry at line rate
- Inband Network Telemetry (INT) for real-time traffic visibility and path monitoring
- Deep packet buffers (8GB) with intelligent buffer management for lossless forwarding
- MLAG and ECMP support for active-active network topologies
- VXLAN with hardware VTEP for network virtualization and overlay networks
- Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) support
- Advanced QoS with flexible queuing, scheduling, and traffic shaping
- Hot-swappable, redundant power supplies and fan modules for high availability
- Arista EOS with in-service software upgrades and self-healing capabilities
- Comprehensive automation support via REST API, NetConf, gNMI, and OpenConfig

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

36 Total Ports: 24x 100GbE QSFP + 12x 400GbE QSFP-DD
- Switching Capacity: 9.6 Tbps wire-speed performance
- Forwarding Rate: 3.6 billion packets per second
- Packet Buffer: 8GB deep buffer for burst absorption
- Routing Scale: Large route tables supporting over 5 million IPv4/IPv6 routes with FlexRoute
- Memory: CPU with sufficient control plane capacity, 480GB SSD storage
- Encryption: Line-rate AES-256-GCM TunnelSec with MACsec, IPsec, and VXLANsec support
- Layer 2 Features: VXLAN, MLAG, EVPN, 802.1Q VLAN, Spanning Tree protocols
- Layer 3 Features: BGP, OSPF, MPLS, Segment Routing, multicast routing
- Management: Arista EOS, CLI, SNMP, NetConf, REST API, sFlow, IPFIX
- Dimensions: 48.3 x 4.4 x 59.2 cm (19 x 1.75 x 23.3 inches), 1RU
- Weight: 14.8 kg (32.6 lbs)
- Power: Dual redundant AC power supplies, 346W typical operational consumption
- Airflow: Front-to-rear (port-side intake, fan-side exhaust)
- Operating Temperature: 0°C to 40°C (32°F to 104°F)

FAQs

Q: What is the primary use case for the DCS-7280CR3AK-24D12-F?
A: This switch is designed for data center spine and leaf architectures, internet peering, high-performance storage networks, and service provider edge routing. The large route table capacity makes it ideal for internet exchange points and MPLS networks requiring extensive routing scale.

Q: What encryption capabilities does this switch support?
A: The switch features line-rate TunnelSec encryption supporting AES-256-GCM cipher with IEEE 802.1AE MACsec for layer 2 point-to-point encryption, IPsec for layer 3 tunnels, and VXLANsec for overlay network encryption, all at wire speed without performance impact.

Q: Can this switch support internet-scale routing tables?
A: Yes, the R3AK variant includes FlexRoute engine supporting over 5 million IPv4/IPv6 routes, making it suitable for internet peering, BGP full table deployments, and large-scale MPLS environments with flexible forwarding profiles for different use cases.

Q: What is the significance of the 8GB packet buffer?
A: The 8GB deep buffer provides superior burst absorption and prevents packet loss during traffic microbursts, making it ideal for high-performance computing, storage networks, and data analytics workloads where lossless forwarding is critical.

Q: Is this switch compatible with existing 100G and 400G infrastructure?
A: Yes, it supports industry-standard QSFP and QSFP-DD optics and cables, enabling flexible connectivity with 100G QSFP28 and 400G QSFP-DD transceivers. The 24x100G ports can connect to existing infrastructure while the 12x400G ports provide high-speed uplinks or future expansion.

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