• Gray metal arista dcs-7280cr3ak-48d6-flx-f 48-port 100g switch with ventilation slots shown from the back side
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Arista

Arista DCS-7280CR3AK-48D6-FLX-F | 7280R3A 48-Port 100G Switch, 6x 400G, 9.6Tbps

DCS-7280CR3AK-48D6-FLX-F

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Description

The Arista DCS-7280CR3AK-48D6-FLX-F is a high-performance data center switch delivering 48x 100GbE QSFP and 6x 400GbE QSFP-DD ports in a compact 1RU form factor. Designed for demanding cloud, service provider, and enterprise environments, it provides 9.6Tbps switching capacity with deep 8GB packet buffers and wire-speed Layer 2/3 forwarding. The R3AK variant includes enhanced MACsec encryption, TunnelSec, large-scale routing up to 2 million routes, and advanced algorithmic ACLs for flexible policy enforcement.

Features

Wire-speed Layer 2 and Layer 3 forwarding with non-blocking architecture
- Deep 8 GB packet buffer with Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- FlexRoute engine with support for up to 2 million IPv4/IPv6 routes (with FLX license)
- Line-rate AES-256-GCM encryption: MACsec, IPsec, and VXLANsec (TunnelSec)
- Algorithmic ACLs for flexible, high-scale access control and policy-based forwarding
- Advanced Layer 3 routing: OSPF, ISIS, BGP, PIM, MPLS, Segment Routing
- Network virtualization: VXLAN, EVPN, EVPN-MPLS, EVPN-VPWS
- Multi-Chassis Link Aggregation (MLAG) for active/active topologies
- Accelerated sFlow and IPFIX for wire-speed network telemetry
- Inband Network Telemetry (INT) for per-flow monitoring of latency, drops, and congestion
- Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE)
- Hot-swappable redundant power supplies and fan modules
- Zero Touch Provisioning (ZTP) for automated deployment
- CloudVision integration for network-wide automation and analytics
- Arista EOS with state-sharing architecture for hitless upgrades and self-healing resiliency

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

48x 100GbE QSFP ports, 6x 400GbE QSFP-DD ports
- Switching capacity: 9.6 Tbps
- Forwarding rate: Up to 3.6 billion packets per second
- Packet buffer: 8 GB deep buffer with VOQ architecture
- CPU: Multi-core processor with 64 GB system memory
- Storage: 120 GB SSD
- FlexRoute engine: Supports up to 2 million IPv4/IPv6 routes with FLX license
- Management: CLI, REST API, SNMP, Zero Touch Provisioning (ZTP)
- Airflow: Front-to-rear (port side to fan side)
- Power: Dual redundant 1500W AC power supplies
- Form factor: 1RU, 19-inch rack-mountable
- Dimensions: 48.3 x 4.4 x 59.2 cm (19 x 1.75 x 23.3 in)
- Weight: Approximately 14.8 kg (32.6 lbs)
- Operating system: Arista EOS (Extensible Operating System)

FAQs

Q: What license is included with the FLX variant?
A: The DCS-7280CR3AK-48D6-FLX-F includes the FLX license for advanced routing features including OSPF, ISIS, BGP, PIM, up to 2 million routes, EVPN, VXLAN, segment routing, and advanced MPLS LER/LSR functionality with over 24K ACL entries.

Q: What is TunnelSec and what encryption does this switch support?
A: TunnelSec is Arista's line-rate strong encryption technology using AES-256-GCM. This switch supports IEEE 802.1AE MACsec for Layer 2 encryption, IPsec for Layer 3, and VXLANsec for overlay networks, enabling encrypted tunnels across third-party infrastructure for WAN and DCI deployments.

Q: What deployment scenarios is this switch designed for?
A: The 7280R3A series is ideal for data center spine/leaf architectures, internet peering, high-performance storage networks, content delivery networks (CDNs), and data center interconnect (DCI). The deep buffers make it particularly suited for lossless forwarding in IP storage and data analytics environments.

Q: Can this switch support 400G-ZR optics for DWDM?
A: Yes, the 7280R3A series supports 400G-ZR coherent optics in the QSFP-DD ports, enabling dense DWDM connectivity and eliminating the need for external transponders in data center interconnect applications.

Q: What is the difference between R3A, R3AM, and R3AK variants?
A: R3A provides standard Layer 2/3 features. R3AM adds enhanced MACsec encryption and TunnelSec. R3AK (this model) includes all R3AM features plus large-scale routing tables up to 2 million routes and algorithmic ACLs for advanced access control and policy-based forwarding.

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