What are the key specifications of the DCS-7280SR3K-48YC8-R?

The DCS-7280SR3K-48YC8-R is a 1RU switch built for enterprise and data center environments. It runs Arista EOS, providing a modern, programmable network operating system with robust automation capabilities.

What is the switching performance of the DCS-7280SR3K-48YC8-R?

The DCS-7280SR3K-48YC8-R delivers a switching capacity of 6.4 Tbps, with latency as low as Sub-microsecond latency, depending on configuration and packet size. This makes it well-suited for latency-sensitive workloads including high-frequency trading, real-time analytics, and high-performance computing environments.

What power options are available for the DCS-7280SR3K-48YC8-R?

The DCS-7280SR3K-48YC8-R supports Dual redundant hot-swappable AC or DC power supplies. Typical power consumption is Platform-dependent, varies by optics and configuration. Contact BrightStar Systems for specific power supply options and availability.

Does the DCS-7280SR3K-48YC8-R support VXLAN and network virtualization?

Yes, the DCS-7280SR3K-48YC8-R runs Arista EOS which provides full support for VXLAN, EVPN, MACsec, and other advanced features. VXLAN enables network virtualization and overlay networking, making this switch ideal for multi-tenant cloud and data center environments. EOS also supports automation through eAPI, CloudVision, and Zero Touch Provisioning (ZTP).

Is the DCS-7280SR3K-48YC8-R available refurbished or pre-owned from BrightStar Systems?

Yes, BrightStar Systems carries the DCS-7280SR3K-48YC8-R in tested, verified condition with a warranty. All units undergo thorough testing before shipment to ensure full functionality. Buying pre-owned networking equipment from BrightStar Systems typically saves 40-70% compared to purchasing new, while still receiving enterprise-grade hardware backed by our support team.

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Tested & Validated

See our 9 step refurbishment process

1 Year In-House
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Arista DCS-7280SR3K-48YC8-R Switch Front

Arista DCS-7280SR3K-48YC8-R | 48x25G + 8x100G Switch Router

Name: DCS-7280SR3K-48YC8-R Arista 25G Universal Leaf
Brand: Arista
SKU: DCS-7280SR3K-48YC8-R

DCS-7280SR3K-48YC8-R

Condition: Seller Refurbished

Seller Warranty

90 Day Resell / 1 Year User

Express Delivery

Worldwide Shipping

Sales & Support

Mon-Fri / 8am – 5 pm PST

What happens next?

A knowledgeable, US-based, Network Hardware Specialist, with 15+ years experience, will review your request.
Based on the exact SKU, we will verify airflow and other details to calculate a quote.
A BrightStar Systems' specialist will personally reach out within 24 hours.

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DESCRIPTION

SPECIFICATIONS

INCLUDED

WARRANTY

SHIPPING

FAQS

DESCRIPTION

Overview

The Arista DCS-7280SR3K-48YC8 platform is available in multiple airflow and power configurations. The DCS-7280SR3K-48YC8-R is the rear-to-front airflow variant, commonly deployed as a high-performance leaf switch in modern 25/100GbE data center fabrics.

Key Hardware Characteristics

Port configuration: High-density 25/100GbE switching, typically deployed with 25GbE SFP28 downlinks and 100GbE QSFP28 uplinks (exact supported optics and speeds depend on EOS and transceiver/cable selection).
Switching capacity: Up to 6.4 Tbps (platform class).
Network OS: Arista EOS for automation, telemetry, and consistent operations across Arista switching platforms.
Latency profile: Designed for low-latency, high-performance leaf/spine fabrics where predictable forwarding behavior is required.

Operational Use Cases

Leaf role in 25/100GbE spine-leaf architectures for enterprise and service provider data centers
Server-facing 25GbE connectivity with 100GbE uplinks for aggregation and fabric interconnect
VXLAN/EVPN-based routed fabrics and large east-west traffic environments (feature availability depends on EOS version and licensing)

Related Variant

Front-to-rear airflow variant: DCS-7280SR3K-48YC8-F

Additional Technical Resources

Best Arista 7280R / 7280R2 / 7280R3 Switches (2025): Model Comparison, Architecture & Deployment Guide

Lifecycle Status: DCS-7280SR3K-48YC8 (Arista End of Sale Notice 23789)

Milestone	Date
End of Sale announcement	April 10, 2026
Last day to order from Arista	October 10, 2026 (subject to availability)
Last day to add a service contract / request hardware failure analysis	October 10, 2027
Last day for software bug fixes and support	October 10, 2029
Last day to renew an existing service contract	October 10, 2030
End of life (last day for TAC support and hardware RMA)	October 10, 2031

Arista’s named replacement for the DCS-7280SR3K-48YC8 is the DCS-7280SR3K-48YC8A.

BrightStar Systems continues to supply the DCS-7280SR3K-48YC8-R refurbished after Arista’s last order date, tested and covered by our 1-year in-house warranty, and stocks the DCS-7280SR3K-48YC8A for customers migrating. Lifecycle dates checked against Arista’s End of Sale notice 23789 on September 25, 2026; see our Arista end-of-life list for every affected model.