Arista Networks Switch Quick Look Datasheet
Quick Look

Arista 7280R3 Series Network Switch

Arista 400g Data Center Switch
Arista 7280R3 Series

High Performance

  • Up to 96 100G and 24 400G wire-speed ports
  • Up to 9.6Tbps capacity
  • Up to 4 billion packets per second
  • Wire speed unicast & multicast
  • Under 4us latency (64 byte)
  • VOQs to eliminate head of line blocking
  • Dynamic deep packet buffer up to 16GB

Feature Rich

  • High Availability
  • Rich L2 and L3 features
  • 512-Way ECMP and 256-Way MLAG
  • Hitless MLAG ISSU
  • Zero touch provisioning
  • IEEE 1588 and SyncE precision timing
  • Flexible 10/25/40G/50G/100G/400G
  • Designed for NEBS

High Scalability

  • 96 x 100G in 2RU
  • 24 x 400G in 1RU
  • 32 x 100G plus 4 x 400G in 1RU
  • 36 x 100G with flexible 200/400G in 1RU
  • 48 x 25G and 8 x 100G in 1RU
  • FlexRoute™ engine
  • Over 5M IPv4 Routes with K series

Virtualization & Provisioning

  • CloudVision
  • VXLAN for next generation DC
  • VM Tracer integration
  • LANZ for microburst detection
  • DANZ advanced mirroring
  • AEM proactive management
  • IEEE 1588 precision timing
  • sFlow for network visibility
  • Inband Network Telemetry

Arista 7280R3 Series Introduction

The Arista 7280R3 Series are a key component of the Arista 7000 Series portfolio and consist of 7280R3 and 7280R3K products. The Arista 7280R3 Series is a set of purpose built 25G/100G/400G fixed configuration systems designed for the highest performance environments, where wire speed L2 and L3 forwarding are combined with advanced features for network virtualization, open monitoring and network analysis, resiliency and architectural flexibility. The 7280R3 Series capabilities address the requirements for modern networking and rich multimedia where content delivery require a lossless forwarding solution.

The Arista 7280R3 Series FlexRoute engine provides the flexible scalability to support deployment as a routing platform with Internet scale routing. All Arista 7280R3 Series support FlexRoute™ engines providing the scalability to support deployment as a routing platform with Internet scale. The 7280R3 Series Accelerated sFlow feature samples and processes flow samples at linerate. The 7280R3K Series support a series of flexible profiles that leverage common resources for different network roles including up to 5M IP routes. Algorithmic ACLs enable more flexible and scalable solutions for access control, policy based forwarding and network telemetry, available on the Arista 7280R3 and 7280R3K series.

7280R3 Advantages

  • Standards-based high density 100G and 400G switch ideal for future proof designs and high bandwidth needs such as in Internet Exchanges, High Performance Storage or Content Delivery Networks (CDNs).
  • Intelligent deep buffers in a fixed form factor makes an ideal spine switch where lossless performance and in-cast problems are expected such as in data analytics and IP storage.
  • Directly connected 25G, 40G and 50G attached storage systems, requiring high performance and predictable latency.
  • Streaming network state for advanced analytics with CloudVision.
  • Network–wide virtualization platform for next generation cloud bursting with wire-speed VXLAN routing
  • Hardware assisted IEEE 1588 and SyncE enables accurate timing solutions across Ethernet based networks without costly investment in separate timing networks
  • Unique monitoring and provisioning features – LANZ, DANZ, AEM, ZTP, VM Tracer, VXLAN, and eAPI
  • Comprehensive L2 and L3 feature set for open multi-vendor networks with no proprietary lock-in.
  • Accelerated sFlow and IPFIX for network forensics.
  • Scalable forwarding table resources allow deployment flexibility in both large L2 and L3 environments for emerging network workloads.
  • Programmable packet processor for advanced features and flexible profiles enabling different use cases including peering and DCI.
  • NEBS compliance and DC power supplies designed for service provider environments.
  • Flexible support for 100G, 200G and 400G with wide selection of optics and cables including OSFP and QSFP-DD form factors.
  • Comprehensive interface combinations with 50G and 200G modes on both 400G and 100G ports using optics and cables.
  • Segment Routing and EVPN with flexible options for underlay and overlay topologies.

Arista EOS

Arista EOS is a modular switch operating system with a unique state sharing architecture that cleanly separates switch state from protocol processing and application logic. Built on top of a standard Linux kernel, all EOS processes run in their own protected memory space and exchange state through an in-memory database. This multi-process state sharing architecture provides the foundation for in-service-software updates and self-healing resiliency.




Network-wide workflow automation and workload orchestration as a turnkey solution for Cloud Networking

DANZ Tap Aggregation

10/40/100/400G Tap Aggregation with best-in-class performance and high density up to 24 400G Tap/Tool ports

Wirespeed VXLAN Routing

Seamless integration between VXLAN and L2/L3 environments, physical and virtualized networks


Build and scale accurate timing solutions with sub-microsecond accuracy


Flexible scalability to support deployment as a routing platform with Internet scale routing

sFlow Acceleration

High sampling rate for advanced network telemetry, capacity planning, traffic engineering and monitoring

Inband Network Telemetry *

Measure latency per device and across the network, trace packets and reconstruct topology

Dynamic Deep Buffers

Up to 16GB of packet memory per switch virtually eliminating packet drops in congestion scenarios

512-way ECMP and 256-way MLAG

Improve network scalability and balance traffic across large-scale leaf-spine designs or server load balancers

Network Wide Virtualization

Multi-vendor API Support with eAPI, VXLAN and NSX, and other encapsulation techniques

* = Not currently supported in EOS

7280R3 Deployment Scenarios

  • Universal Spine

    : Unparalleled performance with high density and network virtualization in a proven architecture.
  • Internet Peering

    : Scaling to over 5M routes with FlexRoute the 7280R3 can be leveraged for peering and MPLS.
  • Telco and Cloud data centers

    : Non-blocking performance and deep buffers coupled with a rich L2/L3 feature set with advanced routing, flexible and open provisioning and telemetry including accelerated sFlow and IPFIX.
  • IP Storage

    : Deep buffers and predictable low latency in non-blocking systems with Inband Network Telemetry.
  • High Performance Compute (HPC) and Research

    : Low and predictable latency, non-blocking with high density 400G and 100G, precision timing, precision monitoring, and support for flexible 10G, 25G, 40G, 50G, 100G and 400G.
  • Cloud and AI

    : High performance leaf and spine for for AI and ML solutions, east-west traffic patterns using advanced monitoring and traffic control features for deterministic performance.
  • Content Delivery Networks

    : Ultra deep buffers create a lossless network for streaming 4K video over content delivery networks that ensures reliable performance under peak load.
  • Data Center Interconnect (DCI)

    : High performance, cost effective and secure.








7280PR3 / PR3K-24
7280DR3 / DR3K-24
96 192 24 192 96 24
7280CR3 / CR3K-32P4 (A)
7280CR3 / CR3K-32D4 (A)
96 96 36 96 48 4
7280CR3 / CR3K-36S 120 120 36 80 40 2
7280CR3 / CR3K-96 192 192 96 192 96
7280SR3 / SR3K-48YC8 (A) 80 80 8 16 8
7280SR3 / SR3E-40YC6 80 80 8 16 8 SR3E
Arista 7280R3 Series systems
Flexible options for 10/25/40/50/100/400G

Arista 400g Data Center Switch Line Cards
Arista 7280R3 Series Switches
Download PDF

Arista 7280R3: Optimized for Next Generation Routing with Advanced Features

Copyright © 2019 Arista Networks, Inc. All rights reserved. CloudVision, and EOS are registered trademarks and Arista Networks is a trademark of Arista Networks, Inc. All other company names are trademarks of their respective holders. Information in this document is subject to change without notice. Certain features may not yet be available. Arista Networks, Inc. assumes no responsibility for any errors that may appear in this document. February 28th, 2022 11-0025-10