DCS-7800R3A-36D2-LC, Arista 7800R3 Switch, 36x400G QSFP-DD/2x400G QSFP-DD/Front-to-Back Airflow

  • Brand: Arista
  • Model: DCS-7800R3A-36D2-LC
  • 100% Genuine
    100% Genuine
    Original, factory-verified
    3-Year Warranty
    3-Year Warranty
    Extended, enterprise-grade
    Years Expertise
    24 Years Expertise
    Proven, deployment-focused
  • Condition
    • Original New
    expert
    Certified Expertise Builds Trust
    CCIE · JNCIE · NSE7 · ACDX · HPE Master ASE · Dell Server/AI Expert
    • Faster Delivery, Globally Ready

      Faster Delivery, Globally Ready

      20+ years of supply chain expertise for faster multi-stop delivery with smooth customs.

      48H Worldwide Shipping
      10+ Global Warehouses
    • Keep Projects On Time

      Keep Projects On Time

      Reliable availability and real-time shipment visibility to keep every critical IT project on schedule.

    • Leading Global Distributor Since 2002

      Leading Global Distributor
      Since 2002

      A global ICT bridge delivering authentic hardware and trusted service for over 20 years.

        21500+ Enterprise Clients Served200+ Countries & Regions Covered
    • Worry-Free Coverage with RSCare

      Worry-Free Coverage with RSCare

      3-Year warranty for enterprise hardware, including advanced RMA, diagnostics, spare parts support, and OEM service compatibility.

      Cisco SmartNet
      HPE Foundation Care
      Dell ProSupport
      Juniper Care
      Fortinet Support
    • Your Trusted Genuine Source

      Your Trusted Genuine Source

      Authorized partnerships with 30+ brands, including Cisco, HPE, Dell, Juniper, and Fortinet.

      100% Authentic Products
      100,000+ Multi-Brand SKUs Available
    Overview

    Arista DCS-7800R3A-36D2-LC Overview

    The Arista DCS-7800R3A-36D2-LC is a high-performance member of the Arista 7800R3 series. This product is designed to deliver robust and scalable solutions for enterprises seeking efficient data center and core networking solutions. With advanced features and superior flexibility, the Arista 7800R3 series is an ideal choice for diverse networking needs.

    Quick Spec

    Brand Arista
    Model DCS-7800R3A-36D2-LC
    Series 7800R3
    Ports 36
    Form Factor Modular

    Product Features

    • ● High-density 36-port configuration for extensive connectivity
    • ● Modular design allowing scalable and flexible network deployment
    • ● Advanced traffic management and QoS capabilities
    • ● Redundant power supplies for higher reliability
    • ● Comprehensive security features, including MACsec encryption

    Product Applications

    • ● Core data center networking, providing high-speed and reliable connections
    • ● Enterprise network backbones, ensuring efficient data handling and transport
    • ● Service provider infrastructure, supporting high-bandwidth traffic with superior performance

    Supported Options

    Accessory Model
    Power Supply Unit PWR-7800-AC
    Fan Module FAN-7800-R
    Transceiver Module QF-40G-SR4

    Compare to Similar Items

    Model Differences
    Arista DCS-7508R2 Lower port density, older architecture
    Cisco NCS 5500 Higher cost, different OS support
    Juniper MX480 Comparable features, slightly lower performance

    Get more information

    Check Arista DCS-7800R3A-36D2-LC price and DCS-7800R3A-36D2-LC datasheet, buy Arista DCS-7800R3A-36D2-LC 7800R3 with best price and fast shipping. Free Live Chat are supported. For further information, contact us via Live Chat or email at [email protected].

    Quality Certifications

    • ISO 14001
    • ISO 9001
    • RoHS
    • REACH
    • CE
    • FCC
    Specification

    Arista DCS-7800R3A-36D2-LC Specification

    DCS-7800R3A-36D2-LC Specifications

    Brand Arista
    Model DCS-7800R3A-36D2-LC
    Series Arista 7800R3
    Ports 36 x 400G QSFP-DD
    Backplane Capacity 57.6 Tbps
    Forwarding Rate 28.8 Bpps (billion packets per second)
    Chassis 7RU with 12 slots
    Power Supply Dual redundant, hot-swappable
    Fan Modules Hot-swappable, redundant
    Routing Protocols OSPF, BGP, ISIS
    Management Interfaces RJ45, 1 x 100/1000 Mbps and 1 x Console port
    Latency Sub-microsecond
    Operating Temperature 0°C to 40°C
    Storage Temperature -40°C to 70°C
    Operating Humidity 5% to 95% non-condensing
    MTBF Over 200,000 hours
    Software Arista EOS
    Security Features ACL, MACsec, Port Mirroring
    Dimensions 12.1 x 17.5 x 29.5 inches
    Compliance RoHS, CE, FCC

    Quality Certifications

    Need Help? Technical Experts Available Now.

    • +1-626-655-0998 (USA)
      UTC 15:00-00:00
    • +852-2592-5389 (HK)
      UTC 00:00-09:00
    • +852-2592-5411 (HK)
      UTC 06:00-15:00
    Need Help? Technical Experts Available Now.
    Q&A

    Questions & Answers

    What accessories are available for the Arista 7800R3?

    Accessories include SFP and QSFP modules, power supplies, and rack-mount kits.

    How does the Arista 7800R3 compare to other similar products?

    The Arista 7800R3 offers superior port density and advanced software features compared to many competitors.

    How to use the advanced EVPN feature in the Arista 7800R3?

    The EVPN feature can be configured through the switch's CLI, offering advanced Layer 2/3 networking capabilities.

    Is router-switch.com a reliable distributor?

    Absolutely. As a multi-brand authorized distributor, router-switch.com is directly certified by leading technology manufacturers. We guarantee 100% genuine products, competitive pricing, and full manufacturer warranties and support.

    Warranty
    • Your Trusted Global ICT Partner

      Delivering reliable, cross-border fulfillment with 20+ years of expertise, backed by rigorous QC, fast logistics, and worldwide warehousing.
      Global warehousing
      Global warehousing
      10+ hubs positioned for fast international dispatch and stable availability.
      Seamless cross-border
      Seamless cross-border
      QC-verified packing and predictable delivery via FedEx, DHL, UPS.
      Your Trusted Global ICT Partner
    • ICT Tools Hub for Confident Monitoring

      ICT Tools Hub for Confident Monitoring

      Stay informed on product lifecycle status and real-time inventory availability—supporting confident planning, sourcing, and operational execution.
      EOL/EOSL Checker
      Verify product lifecycle status to plan purchases and avoid EOL/EOSL risks.
      Request VIP Inventory Portal Access
      Connect via live chat for VIP access to real-time inventory on priority SKUs.
    • Certified Experts Across Leading Vendors

      Professional guidance for network, security & data center builds, delivered by certified experts with extensive, hands-on deployment experience.
      Multi-vendor engineering
      Multi-vendor engineering
      Certified expertise across Cisco, HPE, Aruba, Dell, Juniper, Huawei and Fortinet.
      Deployment-ready guidance
      Deployment-ready guidance
      Faster, safer rollouts with project-focused engineering guidance.
      Certified Experts Across Leading Vendors

    The Choice of 21,500 +Global Customers

    • Ford
    • Disney
    • Nestle
    • Toyota
    • Walmart
    • Philips
    • Ups
    • Huatt
    • Hsbc
    • Novartis
    • Siemens Healthineers
    • Bt
    • Reference Johnson
    • T
    • Att
    • Lgu
    • Sk Telecom
    • Veerizon
    Industry-Leading Warranty Coverage You Can Trust
    • 100% Low Price Guarantee
      100% Low Price Guarantee
      Router-switch.com offers genuine, high-quality ICT products at competitive wholesale prices—ensuring exceptional value without compromising quality.
    • 100% Quality Assurance
      100% Quality Assurance
      All items are brand new, original, and factory-sealed.
      Upon request, each unit can be fully tested and verified by a Arista-certified engineer to ensure perfect working condition before shipment.
    • 100% Money-Back Guarantee
      100% Money-Back Guarantee
      If you are not satisfied with your purchase, you may request an exchange or full refund. Our customer service team will guide you through the return process quickly and smoothly.
      Visit Return Policy page for more information.
    • Free Arista Technical Support
      Our Arista-certified experts provide free professional support via phone, email, online chat, or remote login—helping you deploy and troubleshoot with confidence.
    • Flexible & Secure Payment and Shipping
      Flexible & Secure Payment and Shipping
      We support multiple secure payment and logistics options, backed by industry-leading verification:
      • Pay by wire transfer.
      • Pay with your paypal.
      • Pay with your Visa credit card.
      • Pay with your Mastercard credit card.
      • Pay with your Discover Card.
      • Pay by American Express.
      More
      • mcafee-secure
      • verisign-secured
      • pci-dss
      • ssl-encryption
      Visit How to Pay page for more information
    Warranty Coverage & RMA Instructions
    • Extended, Worry-Free Warranty Coverage
      Extended, Worry-Free Warranty Coverage
      • Factory New Sealed Enterprise Hardware: 3 Years
      • Factory New Sealed Consumer Devices: 1 Year
      Visit Warranty Policy page for more information
    • How to Get Support
      How to Get Support
      If you encounter issues with products, please reach out to your dedicated sales representative. They will assist with diagnostics, remote troubleshooting, and RMA processing if necessary.
      Visit Contact Us page for more support options.

    Best-Fit Solutions for Your Network

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Deploy DeepSeek-V3/R1: Powerful AI, Low Cost

    Expert-configured AI solution: Same power, 90% savings—multi-scenario flexibility with Dell/Huawei/Lenovo options.

    AI
    Beyond Bandwidth: The 100G+ Data Center Architecture

    Beyond Bandwidth: The 100G+ Data Center Architecture

    The must-have 100G foundation - AI-ready growth, zero-latency performance

    Data Center
    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    400G/800G Ethernet Switch: Maxmize Margins via AI-Ready Solutions

    High-Profit data center switches from Cisco, Huawei, Mellanox & Juniper.

    Ethernet Switch