• Gray and black Arista DCS-7280DR3-24 network switch with multiple QSFP-DD 400G ports and sleek rectangular design
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Arista

Arista DCS-7280DR3-24-M | 7280R3 24-Port 400G QSFP-DD Switch, Expanded Memory

DCS-7280DR3-24-M

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Description

The Arista 7280R3 is a high-performance data center switch router designed for demanding cloud, service provider, and enterprise environments. Featuring 24 ports of 400GbE QSFP-DD connectivity with 9.6 Tbps throughput and 16GB ultra-deep packet buffer, this model includes expanded memory for advanced routing capabilities. Ideal for spine/leaf architectures, IP storage, and high-bandwidth applications requiring wire-speed Layer 2/3 forwarding.

Features

FlexRoute Engine for scalable routing with up to 1.3M routes in hardware (expandable with licensing)
- Wire-speed Layer 2 and Layer 3 forwarding with full BGP, OSPF, IS-IS, and MPLS support
- Advanced EVPN services including L2/L3 EVPN, EVPN-VXLAN, EVPN-MPLS Gateway, and EVPN-DCI
- Segment Routing with MPLS and IPv6 support (SR-MPLS, SRv6)
- Virtual Output Queuing per port eliminates head-of-line blocking
- Up to 512-way ECMP/UCMP for maximum load balancing
- Precision Timing: IEEE 1588 PTPv2 and Synchronous Ethernet for carrier-grade timing
- Comprehensive QoS with hierarchical scheduling, classification, and shaping
- CloudVision integration for network-wide telemetry, automation, and visibility
- Advanced monitoring: LANZ (microburst detection), DANZ (advanced mirroring and tap aggregation)
- Zero Touch Provisioning (ZTP) for rapid deployment
- Hot-swappable redundant power supplies and fans for continuous operation
- NEBS Level 3 compliance for carrier deployments
- Support for 400G-ZR/ZR+ optics for long-reach metro DWDM applications

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: 24x 400GbE QSFP-DD ports (supports 4x100G breakout for up to 96x100G)
- Switching Capacity: 9.6 Tbps wire-speed performance
- Forwarding Rate: Up to 3600 Mpps
- Packet Buffer: 16GB ultra-deep buffer with Virtual Output Queuing
- Latency: Sub-microsecond
- Expanded Memory: Enhanced routing table capacity for large-scale deployments
- Form Factor: 1RU rackmount, 48.3 x 4.4 x 57.4 cm (19 x 1.75 x 22.6 inches)
- Weight: 13.1 kg (29.0 lbs)
- Power Supply: Configurable redundant hot-swappable PSU (1+1), maximum 700W consumption
- Cooling: Configurable hot-swappable fans with front-to-rear or rear-to-front airflow
- Management: CLI, SNMP, NetConf, JSON-RPC, CloudVision, ZTP, eAPI
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- Certifications: RoHS, CE, UL, FCC, VCCI, NEBS-compliant design

FAQs

Q: What routing capabilities does the expanded memory variant provide?
A: The -M variant includes expanded memory for enhanced routing table support, accommodating over 256K routes with full support for IPv4/IPv6, EVPN, VXLAN, Segment Routing, and MPLS LSR functions. It is ideal for large-scale data center spine roles and IP peering applications.

Q: Can the 400G ports be used for 100G connectivity?
A: Yes, each 400GbE QSFP-DD port supports breakout to 4x100G, allowing the switch to function as a 96-port 100G system with appropriate transceivers or DAC/AOC cables.

Q: What is the benefit of the 16GB packet buffer?
A: The ultra-deep 16GB buffer with Virtual Output Queuing eliminates head-of-line blocking and ensures lossless performance for bursty traffic patterns common in IP storage, data analytics, and high-performance computing environments.

Q: Does this model support advanced encryption features?
A: Yes, the 7280R3 series supports line-rate AES-256 MACsec and IPsec encryption up to 9.6 Tbps with optional licensing. The platform also supports VXLANsec for comprehensive data security.

Q: What software licensing is required for full routing features?
A: The platform requires Arista EOS with FLX-Lite or FLX licensing for full routing capabilities. FLX-Lite provides up to 256K routes with EVPN, VXLAN, and base MPLS support, while FLX extends to 2M routes with advanced MPLS-LER/LSR and Traffic Engineering features.

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