• Gray metal arista dcs-7280cr3ak-32s-flx-r network switch with 28 ports 100g, 2x 400g and ventilation slots shown from back side
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Arista

Arista DCS-7280CR3AK-32S-FLX-R | 7280R3A 28-Port 100G Switch, 2x 400G, 3.6Tbps, FLX

DCS-7280CR3AK-32S-FLX-R

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Description

The Arista DCS-7280CR3AK-32S-FLX-R is a high-performance 1RU data center switch router designed for demanding cloud, service provider, and large-scale enterprise environments. Featuring 28 ports of 100 Gigabit Ethernet and 2 ports of 400 Gigabit Ethernet, it delivers 3.6 Tbps throughput with advanced FlexRoute technology supporting over 256K routes, EVPN, VXLAN, MPLS, and enhanced MACsec encryption. The rear-to-front airflow design and dual AC power supplies ensure optimal thermal management for data center deployments.

Features

FlexRoute Engine with support for over 5 million routes using flexible forwarding profiles
- Wire-speed Layer 2 and Layer 3 forwarding with non-blocking architecture
- Algorithmic ACLs for scalable access control and policy-based forwarding
- Enhanced MACsec (AES-256-GCM) encryption on all 100G and 400G ports
- TunnelSec support for IPsec encryption
- VXLAN bridging and routing with EVPN control plane
- MPLS LER/LSR with Segment Routing (SR-MPLS) support
- Dynamic deep packet buffers for lossless forwarding and congestion management
- Accelerated sFlow and IPFIX for line-rate network telemetry and monitoring
- Inband Network Telemetry (INT) for real-time visibility and traffic analysis
- Multi-Chassis Link Aggregation (MLAG) for high availability
- Up to 512-way ECMP for efficient load balancing
- Zero Touch Provisioning (ZTP) and Zero Touch Replacement (ZTR)
- CloudVision integration for network-wide automation and visibility
- Precision Time Protocol (PTP) and Network Time Protocol (NTP) support
- Arista EOS with RESTful API (eAPI) for programmable automation
- Hot-swappable power supplies and fan modules for high availability
- NEBS Level 3 compliance for carrier-grade reliability
- Support for 100G, 200G, and 400G optics with flexible breakout configurations

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: 28x 100GbE QSFP28 ports, 2x 400GbE QSFP-DD ports
- Total Port Count: 32 ports
- Switching Capacity: 3.6 Tbps (7.2 Tbps full-duplex)
- Forwarding Rate: 1.35 billion packets per second
- Latency: As low as 3.8 microseconds
- Routing Table: Support for over 256K IP routes with FlexRoute engine, scalable to 2M+ routes
- MAC Address Table: 768,000 entries
- Buffer Memory: Deep packet buffers for lossless forwarding
- Security: AES-256-GCM encryption, TunnelSec, IPsec support, enhanced MACsec on all ports
- VLAN Support: Up to 4096 VLANs
- Power Supply: Dual AC power supplies (redundant), 1500W per PSU
- Airflow: Rear-to-front (blue/reverse airflow)
- Form Factor: 1RU rackmount
- Management: EOS (Extensible Operating System), CLI, SNMP, REST API, CloudVision integration
- Protocols: OSPF, ISIS, BGP, PIM, EVPN, VXLAN, MPLS LER/LSR, Segment Routing
- Standards Compliance: IEEE 802.3, IEEE 802.1Q, NEBS compliant

FAQs

Q: What is the difference between the DCS-7280CR3AK-32S-FLX-R and the base DCS-7280CR3A-32S-R model?
A: The FLX-R model includes the enhanced FlexRoute license supporting over 256K routes (scalable to 2M+), advanced MPLS LER/LSR capabilities, EVPN, VXLAN, Segment Routing, and enhanced MACsec encryption across all ports. It also features algorithmic ACLs for high-scale access control. The base model has more limited routing table size and lacks these advanced routing and security features.

Q: What types of transceivers and cables are compatible with this switch?
A: The 28x 100GbE QSFP28 ports support 100GBASE-SR4, LR4, ER4, and compatible transceivers, as well as breakout configurations to 4x 25G or 4x 10G. The 2x 400GbE QSFP-DD ports support 400G optics and can be configured for 2x 200G or 4x 100G breakout modes. Both copper DAC and active optical cables are supported. Refer to Arista's transceiver compatibility list for specific part numbers.

Q: Is this switch suitable for data center spine or leaf deployment?
A: Yes, the 7280CR3AK-32S is a Universal Spine/Leaf platform ideal for both roles. Its high-density 100G/400G interfaces, deep buffers, FlexRoute engine for internet-scale routing, and support for ECMP, MLAG, EVPN, and VXLAN make it well-suited for modern leaf-spine data center architectures, content delivery networks, and IP storage environments.

Q: Does this model require additional licensing for advanced features?
A: The FLX suffix indicates this model includes the FlexRoute FLX license, which provides full Layer 3 routing up to 2M routes, advanced MPLS, EVPN, VXLAN, Segment Routing, and over 24K ACL entries. Enhanced MACsec encryption and TunnelSec are also included. No additional feature licenses are required for these capabilities, though CloudVision management subscriptions are sold separately.

Q: What is the power consumption and cooling requirement for this switch?
A: The switch features dual hot-swappable AC power supplies rated at 1500W each for full redundancy. Actual power consumption varies with port utilization and optic types. The rear-to-front airflow design requires proper hot/cold aisle data center layout to ensure efficient cooling. High-speed fans are field-replaceable for maintenance.

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