• Gray metal arista dcs-7280cr3k-36a-flx-f network switch with 36 100g ports and ventilation slots visible on the back side
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Arista

Arista DCS-7280CR3K-36A-FLX-F | 7280R3 36-Port 100G Switch, 2x 400G, 7.2Tbps, FLX

DCS-7280CR3K-36A-FLX-F

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Description

The Arista DCS-7280CR3K-36A-FLX-F is a high-performance 1RU data center switch router designed for demanding cloud, content delivery, and service provider networks. With 36x 100GbE QSFP28 ports, 2x 400GbE uplinks, 7.2 Tbps switching capacity, and support for over 256,000 routes with FLX license, it delivers exceptional scalability and advanced Layer 3 routing. Ideal for spine, border leaf, and high-frequency trading environments requiring deep buffering and lossless forwarding.

Features

FlexRoute engine for internet-scale routing up to 2M routes with flexible forwarding profiles
- Dynamic deep buffer architecture for lossless forwarding in high fan-in and bursty traffic scenarios
- Algorithmic ACLs with over 24,000 ACL entries for advanced access control and policy enforcement
- Layer 2 features: VLANs, STP/RSTP/MSTP, LACP, VxLAN, EVPN
- Layer 3 routing: BGP, OSPF, IS-IS, PIM, static routing, IPv4/IPv6
- MPLS and Segment Routing for carrier-grade service provider networks
- IEEE 1588v2 PTP and SyncE for precision timing in 5G and financial applications
- MACsec encryption support for securing data in transit
- Hot-swappable redundant power supplies and fan trays for high availability
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- Accelerated sFlow for hardware-based flow sampling and telemetry
- CloudVision integration for centralized network management and analytics
- Zero-Touch Provisioning (ZTP) for rapid deployment
- Open standards-based with OpenConfig and gNMI support

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

Ports: 36x 100GbE QSFP28 ports (supports 1/10/25/40/50/100G), 2x 400GbE QSFP-DD uplinks
- Switching Capacity: 7.2 Tbps full-duplex, non-blocking throughput
- Forwarding Rate: 2 Bpps (billions of packets per second)
- Routing: Large route tables supporting over 256,000 IPv4/IPv6 routes with FLX license, up to 2M routes with advanced profiles, MPLS, Segment Routing, EVPN, VXLAN
- Buffer: Deep packet buffer architecture with dynamic allocation for lossless forwarding
- Memory: 64 GB DRAM, 120 GB SSD storage
- MAC Address Table: Up to 768,000 entries
- Latency: Ultra-low latency from 3.8 microseconds
- Management: Arista EOS, CLI, web GUI, SNMP, REST API, gNMI streaming telemetry, CloudVision integration
- Power: Dual redundant 1000W AC power supplies (PWR-1011-AC), front-to-rear airflow
- Typical Power Consumption: Approximately 900W (configuration dependent)
- Form Factor: 1RU rack-mountable
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- Certifications: UL, CSA, CE, IEC, FCC, RoHS compliant

FAQs

Q: What is the FLX license included with this switch?
A: The FLX license provides advanced routing capabilities including support for over 256,000 IPv4/IPv6 routes, EVPN, VXLAN, Segment Routing, and advanced MPLS LER/LSR functionality, making it ideal for service provider and large-scale data center deployments.

Q: Can the 100GbE ports support lower speed transceivers?
A: Yes, the QSFP28 ports are flexible and support 1G, 10G, 25G, 40G, 50G, and 100G transceivers, allowing mixed-speed deployments and smooth migration paths.

Q: What deployment scenarios is this switch best suited for?
A: The DCS-7280CR3K-36A-FLX-F excels as a spine switch, border leaf, or peering router in cloud data centers, content delivery networks, high-frequency trading environments, and service provider networks requiring large routing tables and deep buffers.

Q: Does this switch support network automation and telemetry?
A: Yes, it runs Arista EOS which provides comprehensive automation through Zero-Touch Provisioning, Python scripting, CloudVision integration, streaming telemetry via gNMI and eAPI, accelerated sFlow, and DANZ for advanced monitoring.

Q: What is the airflow direction and why does it matter?
A: This model features front-to-rear airflow, which is designed for data centers with hot aisle/cold aisle configurations where cool air enters from the front and hot air exhausts toward the rear.

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