• Gray metal arista dcs-7280sr2-48yc6-f network switch with 48 black 25g ports and blue indicator lights on front panel
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Arista

Arista DCS-7280SR2-48YC6-R | 7280R2 48-Port 25G SFP28 Switch, 6x 100G QSFP28

DCS-7280SR2-48YC6-R

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Description

The Arista DCS-7280SR2-48YC6-R is a high-performance 1RU data center switch engineered for modern cloud and enterprise environments. With 48 wire-speed 25GbE SFP28 ports and 6 100GbE QSFP28 uplinks, it delivers 3.6 Tbps of non-blocking switching capacity and 1.67 Bpps forwarding performance with ultra-low 3.8 microsecond latency. Powered by Arista EOS, this switch supports advanced Layer 2/3 features, VXLAN EVPN for network virtualization, comprehensive telemetry, and dynamic buffering ideal for leaf-spine architectures, storage fabrics, and content delivery networks. The -R suffix denotes rear-to-front airflow optimized for hot-aisle data center cooling.

Features

Arista EOS with modular architecture for network automation, telemetry, and programmability
- VXLAN bridging and routing with EVPN for scalable overlay networks and multi-tenancy
- 128-way MLAG and ECMP for high availability and load balancing in leaf-spine fabrics
- MACsec encryption on all ports for wire-speed Layer 2 security
- Streaming telemetry with gRPC, sFlow, and LANZ (Latency Analyzer) for real-time network monitoring and congestion detection
- Stateful Fault Repair (SFR) and Stateful Fault Containment (SFC) for self-healing and hitless software upgrades
- CloudVision integration for centralized network-wide visibility and management
- Zero Touch Provisioning (ZTP) and Python scripting for automation and DevOps workflows
- Precision Time Protocol (IEEE 1588 PTP) support for accurate network timing
- Dynamic deep buffering (8 GB) for handling bursty traffic and microburst management
- Support for FC (Fire Code) and RS (Reed-Solomon) FEC on 25G ports for error correction
- Hot-swappable redundant power supplies and fan modules for high availability
- Low power consumption with energy-efficient design
- Compatible with Arista-qualified optics and third-party transceivers

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

48 x 25GbE SFP28 ports (1/10/25G multi-rate with FC and RS FEC support)
- 6 x 100GbE QSFP28 ports (configurable as 6x100G, 24x25G, 6x40G, or 24x10G via breakout)
- Switching capacity: 3.6 Tbps full-duplex
- Forwarding rate: 1.67 billion packets per second (Bpps)
- Latency: Approximately 3.8 microseconds
- Packet buffer: 8 GB deep dynamic buffer
- MAC address table: 768,000 entries
- System memory: Quad-core x86 CPU with 8 GB RAM (upgradable to 32 GB)
- Flash storage: 4 GB
- Airflow: Rear-to-front (back-to-front), suitable for hot-aisle cooling
- Power supplies: 1+1 redundant, hot-swappable AC power supplies (2 x PWR-747AC-R)
- Fans: N+1 redundant hot-swappable fan modules (4 x FAN-7000H-R)
- Dimensions: 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches), 1RU
- Weight: 10.4 kg (22.9 lbs)
- Management: CLI, web GUI, SNMP, REST API, NETCONF/YANG, gRPC, gNMI, Zero Touch Provisioning (ZTP)
- Operating system: Arista EOS (Extensible Operating System)
- Certifications: NEBS Level 3, ETSI, RoHS compliant

FAQs

Q: What is the difference between the DCS-7280SR2-48YC6-R and -F models?
A: The -R suffix indicates rear-to-front airflow (port side to fan side), while the -F suffix indicates front-to-rear airflow. The -R model is designed for hot-aisle data center deployments where cooling air flows from the front cold aisle to the rear hot aisle.

Q: Can the 100GbE QSFP28 ports be used for lower-speed connections?
A: Yes, the 6 QSFP28 uplink ports support flexible breakout configurations, allowing you to use them as 6x100G, 24x25G, 6x40G, or 24x10G, providing deployment flexibility for diverse network topologies.

Q: What Layer 2 and Layer 3 protocols does this switch support?
A: The DCS-7280SR2-48YC6-R supports comprehensive Layer 2 features including MLAG, VXLAN/EVPN, LACP, and MSTP, as well as Layer 3 routing protocols such as BGP, OSPFv2/v3, IS-IS, ECMP, PIM-SM/SSM, HSRP, and VRRP.

Q: Is this switch suitable for leaf-spine data center architectures?
A: Absolutely. With its high-density 25G access ports, 100G uplinks, 3.6 Tbps capacity, ultra-low latency, and VXLAN EVPN support, the DCS-7280SR2-48YC6-R is purpose-built for modern leaf-spine fabrics and scale-out data center designs.

Q: Does the DCS-7280SR2-48YC6-R require licensing for Layer 3 features?
A: Arista EOS includes a rich set of Layer 2 and Layer 3 features out of the box. Advanced features such as enhanced Layer 3 routing, VXLAN, and monitoring/automation may require optional software licenses depending on your deployment requirements. Consult Arista or your reseller for specific licensing details.

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