• Gray metal arista dcs-7280cr3ak-72-r 72-port 100g network switch with ventilation slots and multiple ports
1 1

Arista

Arista DCS-7280CR3AK-72-R | 7280R3A 72-Port 100G Switch, 7.2Tbps, Layer 3

DCS-7280CR3AK-72-R

POA
POA
POA
Sale Sold out
Taxes included. Shipping calculated at checkout.

Description

The Arista DCS-7280CR3AK-72-R is a high-performance data center switch router with 72 100GbE QSFP ports delivering 7.2 Tbps throughput and 2.7 billion packets per second. Designed for demanding cloud, service provider, and enterprise environments, this 1RU switch features large routing table support for over 5M routes with FlexRoute, line-rate TunnelSec encryption including MACsec and IPsec, and deep 8GB packet buffers. The rear-to-front airflow configuration ensures efficient thermal management in hot-aisle exhaust deployments.

Features

Non-blocking 7.2 Tbps switching fabric with 72 line-rate 100GbE ports
- FlexRoute architecture supporting over 5 million IPv4/IPv6 routes for internet peering and MPLS
- Line-rate AES-256-GCM TunnelSec encryption (MACsec, IPsec, VXLANsec) on all ports
- 8 GB ultra-deep packet buffer for lossless forwarding and incast mitigation
- Comprehensive Layer 2/3 protocols: OSPF, BGP, IS-IS, VRRP, PIM, IGMP, LACP
- EVPN-VXLAN overlay networking with Layer 2/3 gateway support
- Multi-Chassis Link Aggregation (MLAG) for active-active redundancy
- Equal Cost Multi-Path (ECMP) routing with up to 128-way load balancing
- MPLS and Segment Routing support (LDP, RSVP-TE, SR-TE, TI-LFA)
- Advanced QoS with hierarchical scheduling, policing, and shaping
- Accelerated sFlow and IPFIX for high-capacity telemetry and security monitoring
- IEEE 1588 PTPv2 and Synchronous Ethernet (SyncE) for precision timing
- Algorithmic ACLs (AlgoMatch) for scalable policy enforcement
- Inband Network Telemetry (INT) for microsecond-level flow analytics
- Zero Touch Provisioning (ZTP) and RESTful API automation
- Hot-swappable redundant power supplies (1+1) and fans (N+1)
- Rear-to-front airflow optimized for hot-aisle exhaust deployments
- Arista EOS operating system with unified architecture across all platforms
- Support for VXLAN routing, EVPN multihoming, and DCI gateway functions
- IPv6 ready with full dual-stack routing and tunneling support

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.

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

Port Configuration: 72x 100GbE QSFP ports
- Switching Capacity: 7.2 Tbps full-duplex (14.4 Tbps total)
- Forwarding Rate: 2.7 billion packets per second
- Packet Buffer: 8 GB deep buffer memory
- System Memory: 64 GB RAM
- Storage: 120 GB SSD
- Routing Scale: FlexRoute support for over 5M routes
- CPU: Eight-core x86 processor
- Latency: As low as 3.8 microseconds
- Layer 3 Switching: Full Layer 2/3 support with OSPF, BGP, ECMP, MLAG
- Encryption: Line-rate AES-256-GCM TunnelSec (MACsec, IPsec, VXLANsec) on all ports
- Management: CLI, NETCONF, JSON-RPC, embedded sFlow, IPFIX
- Power Supplies: 2x AC hot-swappable (1+1 redundant)
- Fans: 3x hot-swappable (N+1 redundant)
- Airflow: Rear-to-front (hot-aisle exhaust)
- Form Factor: 1RU rackmount
- Dimensions: 17.3 x 1.72 x 22.6 in (43.99 x 4.37 x 57.4 cm)
- Power Consumption: Typical 650W / Maximum 1100W
- Operating Temperature: 0°C to 40°C
- Certifications: FCC Class A, RoHS compliant
- Operating System: Arista EOS

FAQs

Q: What is the difference between the DCS-7280CR3AK-72-R and the base CR3A-72 model?
A: The DCS-7280CR3AK-72-R includes large routing table support with FlexRoute (over 5 million routes vs. standard 256K), making it ideal for internet peering, MPLS, and service provider edge applications. It also includes full TunnelSec encryption capabilities across all ports. The -R suffix indicates rear-to-front airflow for hot-aisle exhaust configurations.

Q: What encryption capabilities does this switch support?
A: The switch supports line-rate AES-256-GCM encryption through Arista TunnelSec technology, including IEEE 802.1AE MACsec for Layer 2 point-to-point encryption, IPsec (RFC 4303) for Layer 3 encrypted tunnels, and VXLANsec for overlay network encryption. All 72 ports support wire-speed encryption at 100G without performance degradation.

Q: Is this switch suitable for leaf-spine data center architectures?
A: Yes, the 7280R3A series is purpose-built for modern leaf-spine architectures. It supports EVPN-VXLAN overlays, MLAG for active-active Layer 2 topologies, and ECMP for Layer 3 fabrics. The deep 8GB buffer and non-blocking architecture ensure predictable low-latency performance for AI/ML, storage, and cloud workloads.

Q: What optical transceivers are compatible with the QSFP ports?
A: The 72 QSFP ports support a wide range of 10G, 25G, 40G, 50G, and 100G transceivers including QSFP28, QSFP+, and breakout cables. Each port can be configured for 4x25G or 4x10G breakout operation. Consult the Arista transceiver compatibility matrix for specific part numbers and EOS software version requirements.

Q: Does this model include Arista EOS software licensing?
A: Arista switches include a perpetual EOS software license with no recurring subscription fees. The switch supports the full Arista EOS feature set out of the box. Optional CloudVision network management and telemetry subscriptions are available separately for centralized automation and analytics.

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us