• Stack of five silver arista dcs-7280cr3-32p4 network switches with ethernet ports and blue accent lighting
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Arista

Arista DCS-7280CR3-32P4 | 7280R3 32-Port 100G Switch, 4x 400G OSFP

DCS-7280CR3-32P4

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Description

The Arista DCS-7280CR3-32P4 is a high-performance data center switch router designed for hyperscale, enterprise, and service provider environments. It delivers 32 ports of 100GbE QSFP with flexible breakout options and 4 ports of 400GbE OSFP for scalable bandwidth expansion. With 4.8 Tbps of non-blocking throughput, 2 Bpps forwarding rate, and ultra-low 3.8 µs latency, it supports advanced Layer 2/3 routing, VXLAN, EVPN, MPLS, and algorithmic ACLs for demanding cloud networking and high-density interconnects.

Features

4.8 Tbps non-blocking switching fabric with 2 Bpps line-rate forwarding across all ports
- 8 GB Virtual Output Queue (VOQ) deep packet buffer eliminates head-of-line blocking
- Ultra-low 3.8 µs store-and-forward latency for latency-sensitive applications
- Full Layer 3 routing: BGP, OSPF, IS-IS, MPLS (LDP, RSVP-TE, Segment Routing), EVPN, VXLAN
- 512-way Equal-Cost Multi-Path (ECMP) routing for highly resilient network topologies
- Algorithmic ACLs for scalable access control, policy-based forwarding, and telemetry
- FlexRoute technology (K-variants) supports 5M+ IPv4/IPv6 routes and 384K+ MAC addresses
- Advanced QoS with 8 queues per port: strict priority, WRR, WFQ, and dynamic buffer allocation
- Arista EOS single-image software with stateful fault repair, in-service upgrades, and rollback
- CloudVision network-wide automation, telemetry, and zero-touch provisioning (ZTP)
- Precision timing: IEEE 1588v2 PTP, SyncE for 5G fronthaul and financial trading applications
- Comprehensive telemetry: LANZ (Latency Analyzer), sFlow, Accelerated Event Management (AEM)
- Dual redundant hot-swappable power supplies with front-to-rear or rear-to-front airflow
- Energy-efficient design with flexible port breakout for optimized capacity and power draw

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

Port Configuration: 32 x 100GbE QSFP28 ports (support 10G/25G/40G/50G/100G), 4 x 400GbE OSFP ports
- Switching Capacity: 4.8 Tbps full-duplex, non-blocking
- Forwarding Rate: 2 Bpps wire-speed performance
- Latency: 3.8 µs (store-and-forward)
- Packet Buffer: 8 GB VOQ (Virtual Output Queue) deep packet buffer
- MAC Address Table: 768,000 entries
- Layer 3 Protocols: BGP, OSPF, IS-IS, MPLS (LDP, RSVP-TE, BGP LU), SR-TE, EVPN, VXLAN, 512-way ECMP
- Routing Scale: Up to 5M+ IPv4/IPv6 routes (K-variant FlexRoute), 384K+ MAC addresses
- Management: Arista EOS, CloudVision integration, CLI, SNMP, NetConf, RESTful API, ZTP
- CPU & Memory: Quad-core x86 processor, 64 GB DRAM, 120 GB SSD (K-variant)
- Power Supply: Dual redundant AC power supplies
- Form Factor: 1RU rack-mountable
- Airflow Options: Front-to-rear (-F) or rear-to-front (-R) airflow configurations

FAQs

Q: What port breakout options does the DCS-7280CR3-32P4 support?
A: The 32 x 100GbE QSFP28 ports support flexible breakout to 50GbE, 40GbE, 25GbE, and 10GbE on alternate ports, enabling up to 96 total interfaces. The 4 x 400GbE OSFP ports support 400G, 200G, and 100G line rates for scalable capacity expansion.

Q: What is the difference between the base CR3 and CR3K variants?
A: The CR3K variants include FlexRoute technology, providing significantly enhanced routing scale with over 5 million IPv4/IPv6 routes, 384K+ MAC addresses, and algorithmic ACLs supporting 100K+ rules. Base CR3 models have standard routing tables suitable for most enterprise and data center applications.

Q: Is this switch suitable for VXLAN and EVPN deployments?
A: Yes, the DCS-7280CR3-32P4 is designed for modern data center fabrics and supports full VXLAN encapsulation, EVPN control plane, MPLS segment routing, and 512-way ECMP for highly scalable and resilient overlay networks.

Q: What airflow configuration should I choose?
A: Select the -F suffix for front-to-rear airflow (cool air enters port side, exhausts fan side) or -R for rear-to-front airflow. Your choice should align with your data center hot-aisle/cold-aisle design. The base SKU with # allows configurable fans and PSU.

Q: Does this model support MACsec encryption?
A: The base DCS-7280CR3-32P4 does not include MACsec. For line-rate MACsec encryption (AES-256-GCM), order the MK-variant models such as DCS-7280CR3MK-32P4S, which include hardware-accelerated encryption and TunnelSec support.

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