• Silver-colored Arista DCS-7280R4K-64QC-10PE-R rack-mountable network switch with 64 100G ports and ventilation slots
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Arista

Arista DCS-7280R4K-64QC-10PE-R | 7280R4 64-Port 100G + 10-Port 800G Switch, 25.6Tbps

DCS-7280R4K-64QC-10PE-R

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Description

The Arista DCS-7280R4K-64QC-10PE-R is a high-performance data center switch router designed for AI, cloud, and service provider networks. This 1RU fixed switch delivers 25.6 Tbps of non-blocking throughput with 64 QSFP 100GbE ports and 10 OSFP 800GbE ports, supporting deep packet buffers and large-scale routing. The 7280R4K model features enhanced encryption with line-rate TunnelSec support for MACsec, IPsec, and VXLANsec, plus scalability to over 5 million routes. Ideal for AI/ML leaf deployments, spine networks, data center interconnect, and internet peering.

Features

FlexRoute engine with scalability to 5 million IPv4/IPv6 routes in hardware
- Virtual Output Queueing (VOQ) architecture eliminates head-of-line blocking
- 16GB deep packet buffers for lossless performance in congestion scenarios
- Line-rate TunnelSec encryption: MACsec, IPsec, VXLANsec (AES-256-GCM)
- Algorithmic ACLs scaling to hundreds of thousands of policy entries
- EVPN-VXLAN overlay networking for L2/L3 stretch and DCI
- MPLS and Segment Routing support for carrier-grade deployments
- 512-way ECMP for balanced traffic distribution in leaf-spine designs
- Multi-Chassis Link Aggregation (MLAG) for active-active topologies
- Inband Network Telemetry (INT) for per-flow latency and congestion monitoring
- Accelerated sFlow sampling on all interfaces at full forwarding capacity
- Arista CloudVision integration for network-wide automation and telemetry
- Zero Touch Provisioning (ZTP) for automated deployment
- Hot-swappable redundant power supplies and fan modules
- Precision Time Protocol (PTP) support
- Support for 400G/800G ZR/ZR+ coherent DWDM optics
- Arista EOS with comprehensive APIs for programmability and automation
- 1x QSFP-LS port for ZR Line System connectivity

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

64x 100GbE QSFP ports (supports 100G, 40G, 4x25G, 4x10G breakout)
- 10x 800GbE OSFP ports (supports 800G, 400G, 200G, 100G, 50G)
- Throughput: 14.4 Tbps (28.8 Tbps full-duplex)
- Packet forwarding rate: 5.4 billion packets per second
- Latency: From 3.8 microseconds
- CPU: Eight-core x86 processor
- System memory: 64GB DDR4
- Packet buffer memory: 16GB deep buffer with VOQ architecture
- Routing scale: Up to 5 million routes (IPv4/IPv6) with FlexRoute engine
- SSD storage: 480GB NVMe
- Line-rate encryption: TunnelSec with MACsec, IPsec, VXLANsec (AES-256-GCM) on all ports
- Management: 1x 100/1000 RJ45, 1x USB, 1x RS232 console
- Airflow: Rear to front (-R)
- Power supplies: 2x hot-swappable AC PSU (redundant)
- Form factor: 1RU fixed configuration
- Operating system: Arista EOS

FAQs

Q: What is the difference between the 7280R4 and 7280R4K models?
A: The 7280R4K variant adds large routing table support scaling to over 5 million routes, line-rate encryption with TunnelSec on all ports, and enhanced policy capabilities with Algorithmic ACLs. The standard 7280R4 does not include these advanced encryption and routing features.

Q: What deployment scenarios is the DCS-7280R4K-64QC-10PE-R best suited for?
A: This model is optimized for AI/ML leaf deployments requiring high-density 100G server connectivity with 800G uplinks, data center spine networks, internet peering, service provider backbones, data center interconnect, and content delivery networks. The deep buffers and VOQ architecture make it ideal for lossless AI training and congestion-sensitive workloads.

Q: Does this switch support breakout configurations?
A: Yes, the 100GbE QSFP ports support breakout to 4x25GbE or 4x10GbE. The 800GbE OSFP ports can operate at 800G, 400G, 200G, 100G, or 50G speeds. This flexibility allows deployment with a wide range of interface speeds from 10G to 800G.

Q: What encryption capabilities are included?
A: The 7280R4K model includes Arista TunnelSec technology providing line-rate AES-256-GCM encryption on all QSFP and OSFP ports simultaneously. Supported protocols include MACsec for layer 2 link encryption, IPsec for layer 3 tunnels, and VXLANsec for overlay encryption. Encryption services require an EOS license file to enable.

Q: Is this switch compatible with 400G/800G ZR coherent optics?
A: Yes, the 7280R4 platform is optimized for high-power 400G and 800G ZR/ZR+ OSFP and QSFP-DD coherent optical modules. It supports DWDM deployments with reaches up to 120km and is compatible with Arista's ZR Line System for multiplexing multiple 800ZR channels over single fiber pairs.

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