• Gray metal arista dcs-7280cr3ak-32s-f network switch with 32 ports and ventilation slots shown from the back side
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Arista

Arista DCS-7280CR3AK-32S-F | 7280R3A 32-Port Switch, 28x 100G, 2x 400G, TunnelSec

DCS-7280CR3AK-32S-F

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Description

The Arista DCS-7280CR3AK-32S-F is a high-performance 1RU data center switch router designed for demanding enterprise and service provider environments. Featuring 28 ports of 100GbE QSFP and 2 ports of 400GbE QSFP-DD, this system delivers 4.8 Tbps of non-blocking throughput with deep packet buffers and advanced Layer 2/3 routing capabilities. With integrated TunnelSec encryption supporting MACsec, IPsec, and VXLANsec at line rate, large routing table support for internet peering, and front-to-rear airflow with dual AC power supplies, it is ideal for universal leaf-spine architectures, DCI connectivity, high-performance storage networks, and encrypted WAN deployments.

Features

4.8 Tbps non-blocking switching capacity with 8GB deep packet buffers for burst absorption
- 28x 100GbE QSFP ports supporting 1G/10G/25G/40G/50G/100G speeds
- 2x 400GbE QSFP-DD ports supporting 50G/100G/200G/400G speeds
- Line-rate AES-256-GCM TunnelSec encryption (MACsec, IPsec, VXLANsec) up to 4.8 Tbps
- FlexRoute engine supporting over 5 million IPv4/IPv6 routes for internet peering
- Algorithmic ACLs for flexible high-scale access control and policy-based forwarding
- Comprehensive EVPN support: EVPN-VXLAN, EVPN-MPLS, EVPN-VPWS, EVPN-DCI gateway
- Advanced routing protocols: BGP, OSPF, IS-IS, multicast, mLDP, Segment Routing
- Accelerated sFlow with 1:500 sampling rates at full wire speed
- Inband Network Telemetry (INT) for real-time per-flow latency and congestion monitoring
- Virtual Output Queue (VoQ) architecture eliminating head-of-line blocking
- MLAG for active-active Layer 2 topologies and ECMP for Layer 3 scaling
- Precision Time Protocol (PTP) and Synchronous Ethernet (SyncE) for timing accuracy
- Modular Database (MDB) for flexible forwarding table allocation (MAC, routing, host, ARP)
- Hot-swappable redundant power supplies and fan modules
- Arista EOS with stateful switchover, zero-touch provisioning, and in-service software upgrades
- CloudVision integration for network-wide automation and workflow orchestration
- Standards-based management: NETCONF, RESTCONF, gNMI, OpenConfig, SNMP

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

32 Total Ports: 28x 100GbE QSFP, 2x 400GbE QSFP-DD
- Switching Capacity: 4.8 Tbps non-blocking
- Forwarding Rate: Up to 2 Bpps
- Deep Packet Buffers: 8GB on-chip buffer memory
- Large Routing Table: Supports over 5 million IPv4/IPv6 routes with FlexRoute engine (R3AK variant)
- Layer 2/3 Features: VXLAN, EVPN, BGP, OSPF, IS-IS, MPLS, Segment Routing
- Encryption: Line-rate AES-256-GCM TunnelSec (MACsec, IPsec, VXLANsec)
- Management: Arista EOS, CLI, Web UI, CloudVision, SNMP, REST API, gRPC
- Advanced Telemetry: Accelerated sFlow, IPFIX, DANZ, Inband Network Telemetry (INT)
- Form Factor: 1RU rackmount
- Airflow: Front-to-rear (port side to fan side)
- Power Supplies: 2x AC power supplies (1500W each), redundant
- NEBS Compliance: Suitable for service provider environments

FAQs

Q: What is the difference between the R3A, R3AM, and R3AK variants?
A: The R3A provides standard Layer 2/3 functionality, the R3AM adds TunnelSec encryption (MACsec, IPsec, VXLANsec) capabilities, and the R3AK includes both TunnelSec encryption and large-scale routing tables supporting over 5 million routes with FlexRoute for internet peering applications. The DCS-7280CR3AK-32S-F is an R3AK model with both encryption and enhanced routing capabilities.

Q: Can this switch support both 100G and 400G optics simultaneously?
A: Yes, the DCS-7280CR3AK-32S-F supports mixed interface speeds with 28 QSFP ports for 100GbE (also supporting 40G, 50G modes) and 2 QSFP-DD ports for 400GbE (also supporting 200G, 100G modes with appropriate optics), enabling flexible leaf-spine designs and migration paths.

Q: What deployment scenarios is this switch best suited for?
A: This switch excels as a universal leaf or spine in large data centers, internet peering routers requiring extensive routing tables, DCI gateways with encrypted WAN connectivity, high-performance storage networks, and EVPN-VXLAN overlay architectures. The TunnelSec feature makes it ideal for secure multi-tenant and WAN encryption use cases.

Q: Does this model require any software licenses?
A: Arista switches run on Arista EOS operating system. The TunnelSec encryption and large routing table features are hardware-enabled on the R3AK platform. CloudVision management platform subscriptions are available separately for centralized network orchestration and analytics.

Q: What is the difference between -F and -R suffix models?
A: The -F suffix indicates front-to-rear airflow (air enters from the port side and exhausts at the fan side), while -R indicates rear-to-front airflow. The # suffix indicates configurable fans and PSU for flexible deployment. Consistent airflow direction across all equipment in a rack is essential for proper cooling.

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