• Stack of four silver arista dcs-7280sr3ak-48yc8-f 48-port 50g network switches with ventilation grilles and multiple ports
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Arista

Arista DCS-7280SR3AK-48YC8-F | 7280R3A 48-Port 50G Switch, 6x 200G QSFP, TunnelSec

DCS-7280SR3AK-48YC8-F

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Description

The Arista DCS-7280SR3AK-48YC8-F is a high-performance 1RU data center switch router delivering 3.6 Tbps throughput with 48x 50GbE SFP ports and 6x 200G QSFP ports. Part of the 7280R3A Series, it features large routing table support for internet-scale deployments, line-rate TunnelSec encryption for secure layer 2/3 connectivity, and 4GB packet buffer memory with VOQ architecture for lossless forwarding. Ideal for high-density leaf-spine architectures, DCI, and secure multi-tenant data center environments requiring advanced routing scale and encryption.

Features

Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking with deep 4GB packet buffering
- FlexRoute engine with internet-scale routing tables supporting up to 1.45M IPv4 routes and flexible forwarding profiles
- Line-rate TunnelSec encryption supporting MACsec, IPsec, and VXLANsec for secure layer 2/3 and overlay networks
- 48x 50GbE SFP ports with flexible 50G/25G/10G/1G speed support and 6x QSFP ports (4x 200G + 4x 100G)
- Accelerated sFlow with 1:500 sampling rates for full wire-speed network telemetry and visibility
- Algorithmic ACLs enabling scalable access control with up to 100K entries and pattern matching
- IEEE 1588v2 Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) with OCXO for telecom-grade timing
- Comprehensive layer 2/3 protocols including BGP, OSPF, IS-IS, MPLS, Segment Routing, VXLAN, and EVPN
- Advanced monitoring with LANZ (Latency Analyzer), DANZ, and Inband Network Telemetry (INT)
- CloudVision integration for network-wide automation, streaming telemetry, and analytics
- Hot-swappable redundant power supplies (1+1) and N+1 redundant fan modules
- Stateful switchover and hitless software upgrades for continuous operations
- 400G-ZR DWDM support for long-reach DCI applications with integrated amplification
- Zero-Touch Provisioning (ZTP) and programmable automation via Python, eAPI, and OpenConfig
- NEBS Level 3 compliance for carrier-grade reliability in service provider environments

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

Port Configuration: 48x 50GbE SFP ports (supports 50G/25G/10G), 4x 200G QSFP ports, 4x 100G QSFP ports
- Switching Capacity: 3.6 Tbps full-duplex (7.2 Tbps bidirectional)
- Forwarding Rate: 1.35 billion packets per second (Bpps)
- Latency: From 3.8 microseconds
- Packet Buffer: 4GB high-bandwidth memory
- CPU: Eight-core x86 processor
- System Memory: 64GB RAM
- Routing Scale: Enhanced routing table support for large-scale deployments (up to 1450K IPv4 routes)
- Encryption: Line-rate TunnelSec with MACsec, IPsec, and VXLANsec support (AES-256-GCM)
- Timing: IEEE 1588 PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management: CLI, Web GUI, SNMP, REST API, CloudVision integration
- Power Supply: Dual hot-swappable 1000W AC/DC (1+1 redundancy)
- Airflow: Front-to-rear (port side to fan side)
- Form Factor: 1RU rackmount
- Dimensions: 1.75 inches (H) x 17.4 inches (W) x 20.7 inches (D)
- Operating Temperature: 0°C to 40°C
- Certifications: IEEE, RoHS, NEBS compliant

FAQs

Q: What is the difference between the SR3A and SR3AK models?
A: The SR3AK variant includes enhanced routing table resources supporting up to 1.45 million IPv4 routes for large-scale internet peering and DCI deployments, plus TunnelSec encryption capability. The standard SR3A model offers baseline routing tables without encryption.

Q: Can the 200G QSFP ports support 100G optics?
A: Yes, the 6x QSFP ports are configured as 4x 200G and 4x 100G, providing flexibility for mixed-speed uplinks. The ports support QSFP28 and QSFP56 optics with backward compatibility to 40G and breakout modes for 4x10G or 4x25G connectivity.

Q: What encryption capabilities does TunnelSec provide?
A: TunnelSec delivers line-rate encryption using AES-256-GCM cipher for IEEE 802.1AE MACsec at layer 2, IPsec at layer 3, and VXLANsec for overlay networks. This enables secure DCI links and encrypted tunnels across third-party infrastructure without performance impact.

Q: Is the DCS-7280SR3AK-48YC8-F suitable for leaf-spine architectures?
A: Absolutely. This switch is purpose-built for high-performance leaf deployments in modern data centers, offering 50G server connectivity with 200G/100G spine uplinks, deep buffers for burst absorption, and VXLAN/EVPN support for scalable overlay fabrics.

Q: What operating system does this switch run?
A: The switch runs Arista EOS (Extensible Operating System), providing advanced automation, telemetry, CloudVision integration, Zero-Touch Provisioning, and consistent feature parity across the Arista portfolio with in-service software upgrades and stateful switchover capability.

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