What speeds do the QSFP100 ports support?

QSFP100 ports support 100/50/40/25/10GbE speeds natively with breakout to 4x10/25GbE or 2x50GbE. Compatible with QSFP28 optics/cables using RS-FEC/FC-FEC, enabling flexible migration from legacy 10/25GbE to 100GbE spine deployments.

What is the buffer architecture?

12GB deep shared packet buffers with per-port Virtual Output Queues (VOQ) eliminate HOL blocking. Supports ECN, PFC, and LLDP for congestion management, ideal for microburst-heavy workloads like NVMe-oF and AI training clusters.

Does it support network virtualization?

Yes, full VXLAN/EVPN support with hardware offload for overlay routing. Scales to millions of tenants with 768K MAC and 2M+ IPv4 routes, integrated with Arista CloudVision for multi-tenant orchestration in cloud data centers.

What management options are available?

Arista EOS with eAPI, gNMI, OpenConfig YANG models. Supports ONIE for third-party NOS, ZTP, and CloudVision. Advanced monitoring via sFlow, streaming telemetry, and DANZ Monitor for tap aggregation.

Is it suitable for spine deployments?

Optimized for spine role with 6Tbps capacity, large route scale, and low latency. Supports BGP-EVPN full mesh with ECMP up to 64 paths, precision PTP timing, and front-to-back airflow for hot aisle containment.

DCS-7280CR2K-30-F - Arista DCS-7280CR2K-30-F 30x 100GbE QSFP28 1RU Switch

Name: Arista DCS-7280CR2K-30-F 30x 100GbE QSFP28 1RU Switch
Brand: Arista
SKU: DCS-7280CR2K-30-F
Price: 10368 USD
Availability: InStock

DCS-7280CR2K-30-F - Arista DCS-7280CR2K-30-F 30x 100GbE QSFP28 1RU Switch | US IT Hardware

Product overview

The Arista DCS-7280CR2K-30-F is a high-performance 1RU data center switch from the 7280R Series, featuring 30 x 100GbE QSFP28 ports supporting breakout to 4x10/25 or 2x50GbE. It provides 6Tbps switching capacity and 2.51 Bpps forwarding rate with deep 12GB packet buffers for lossless handling of congested traffic in large-scale environments. Latency as low as 3.8µs ensures deterministic performance for cloud, hyperscale, and service provider networks. Designed for front-to-back airflow, it includes dual hot-swappable 1600W AC PSUs (typical 563W draw), 5 hot-swap fans, and up to 32GB DRAM system memory. Advanced features include VXLAN routing, large L2/L3 tables (up to 2M IPv4 routes in K variant), precision timing, and EOS for network monitoring. Supports ONIE for third-party NOS and Arista's Extensible OS for ZTP and automation. Ideal for spine/leaf architectures, it scales to massive densities with VOQ architecture eliminating HOL blocking. Redundant components and >94% efficient PSUs reduce OpEx in 24/7 data centers. Dimensions 19x1.75x26.4in, 34.2lbs weight.

30x 100GbE QSFP28 ports.
6Tbps switching, 2.51Bpps.
12GB deep packet buffers.
3.8µs low latency L3.
Front-to-back 1RU airflow.
Dual 1600W hot-swap PSUs.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	DCS-7280CR2K-30-F
Brand	Arista
Condition	Refurbished
Latency	As low as 3.8 µs
Features	VXLAN, EVPN, sFlow, ZTP, ONIE, VOQ, Precision Timing
Device Type	L2/L3 Data Center Switch - 30x 100GbE QSFP28
MAC Addresses	768K MAC addresses
Routing Tables	Over 2M IPv4 routes (R2K variant)

Storage

Packet Buffer	12 GB deep buffer architecture

Compatible systems

Designed for Arista EOS and ONIE-compatible NOS. Compatible with standard QSFP28 optics/cables and 19in racks.

Arista 7000 Series
Model: 7280R2
Form factor: 1U Rack
Generation: R2K
Native EOS compatibility
Generic Data Center Racks
Model: 19in EIA
Form factor: 1U Rack
Generation: Standard
Standard rackmount rails

Best for

Hyperscale Data Centers
Spine/leaf deployments with EVPN/VXLAN overlays for massive east-west traffic using Arista EOS and CloudVision automation.
Cloud Service Providers
High-density 100GbE interconnects for VM/container orchestration in Kubernetes/OpenStack environments with deep buffer congestion management.
Service Provider Peering
100GbE border leaf switches handling BGP peering sessions with 2M route scale and sFlow telemetry for traffic analytics.
AI/ML Training Clusters
Low-latency 100GbE fabric for GPU clusters with RDMA over Converged Ethernet (RoCE) and precision PTP timing.

Details

Shipping, warranty & returns

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Forwarding Rate	2.51 Bpps
Switching Capacity	6 Tbps full duplex

Weight	15.5 kg (34.2 lbs)
Dimensions	48.3 x 4.4 x 67.1 cm (19 x 1.75 x 26.4 in)
Form Factor	1RU rack-mountable 19in

Fans	5 hot-swappable modules
Airflow	Front-to-back (Port side intake)
Operating Temperature	0° to 40°C (32° to 104°F)

Arista DCS-7280CR2K-30-F 30x 100GbE QSFP28 1RU Switch

Product overview

Featuring

Storage

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Network & Communication

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Warranty & Support

Frequently asked questions