• This black arista dcs-7280dr3a-54-dc-f server rack shows multiple slots with green-lit 400g qsfp-dd switch components
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Arista

Arista DCS-7280DR3AK-54-DC-F | 7280R3A 54-Port 400G QSFP-DD Switch, 21.6Tbps, DC

DCS-7280DR3AK-54-DC-F

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Description

The Arista DCS-7280DR3AK-54-DC-F is a high-density 2RU data center switch router featuring 54 ports of 400GbE QSFP-DD connectivity with 21.6Tbps of wire-speed throughput and 8.1 billion packets per second forwarding capacity. Built on the 7280R3AK platform with FlexRoute technology, it delivers large-scale routing with over 256K routes, line-rate TunnelSec encryption, deep VOQ buffering for lossless performance, and advanced telemetry. Ideal for data center spine, internet peering, DCI, EVPN-VXLAN, MPLS networks, and 400G fabric deployments requiring internet-scale routing and comprehensive security.

Features

FlexRoute engine with internet-scale routing table capacity (5M+ routes)
- Deep buffer Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- Lossless forwarding with dynamic deep buffering for mixed traffic loads
- Line-rate AES-256-GCM TunnelSec encryption (MACsec, IPsec, VXLANsec)
- Enhanced MACsec (802.1AE) for layer 2 frame encryption and authentication
- Algorithmic ACLs for flexible high-scale access control and policy-based forwarding
- Accelerated sFlow and IPFIX for wire-speed network telemetry
- Inband Network Telemetry (INT) for per-flow latency, congestion, and path monitoring
- EVPN-VXLAN overlay networking with layer 2 and layer 3 stretch
- MPLS, Segment Routing (SR-MPLS, SR-TE), and LDP support
- IPv4/IPv6 unicast and multicast routing (PIM, IGMP, MLD)
- Multi-Chassis Link Aggregation (MLAG) and ECMP for high availability
- Comprehensive L2 features: VLANs, STP/RSTP/MSTP, LACP, QinQ
- Advanced QoS with weighted fair queuing and priority scheduling
- IEEE 1588v2 PTP and SyncE for precision timing
- Flexible forwarding profiles for optimal resource allocation (routing, MAC, host, ARP tables)
- Hot-swappable redundant DC power supplies and fan modules
- Arista EOS with state sharing architecture and open programmability
- CloudVision integration for network-wide automation and analytics
- Zero Touch Provisioning (ZTP) and eAPI for automation
- Front-to-rear airflow for hot-aisle/cold-aisle data center deployment
- Modular Database (MDB) for flexible table allocation across network roles

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: 54x 400GbE QSFP-DD ports
- Switching Capacity: 21.6 Tbps wire-speed, non-blocking
- Forwarding Rate: 8.1 billion packets per second
- Packet Buffer: Deep buffer architecture with Virtual Output Queue (VOQ)
- Routing Scale: Large route table support (over 256K routes) with FlexRoute engine, scales to 5M+ routes with flexible profiles
- Encryption: Line-rate TunnelSec with AES-256-GCM, IEEE 802.1AE MACsec, IPsec, VXLANsec support
- Layer 2/3: Full L2 and L3 feature set, EVPN-VXLAN, MPLS, Segment Routing, MLAG, ECMP
- Latency: From 3.8 microseconds
- Telemetry: Accelerated sFlow, IPFIX, Inband Network Telemetry (INT), Algorithmic ACLs
- Management: Arista EOS, CLI, eAPI, CloudVision integration, SNMP, NetConf, REST API
- Power: Dual hot-swappable 3000W DC power supplies (PWR-3001-DC-RED), typical 933W, max 1715W
- Airflow: Front-to-rear (forward) cooling
- Form Factor: 2RU, 19 x 3.5 x 25.2 inches (48.3 x 8.9 x 64 cm)
- Weight: 54.8 lbs (24.9 kg)
- Operating Temperature: 0°C to 40°C
- Supported Optics: 1G/10G/25G/50G/100G/200G/400G SFP, QSFP, QSFP-DD transceivers and DAC/AOC cables

FAQs

Q: What is the maximum routing table capacity of the DCS-7280DR3AK-54-DC-F?
A: The R3AK variant features large-scale routing with FlexRoute technology, supporting over 256K routes in standard profiles and can scale to over 5 million IP routes using flexible forwarding profiles, making it ideal for internet peering and service provider edge deployments.

Q: Does this switch support encryption, and at what performance level?
A: Yes, the 7280R3AK platform provides line-rate TunnelSec encryption at full 21.6Tbps throughput using AES-256-GCM, including IEEE 802.1AE MACsec, IPsec, and VXLANsec without any performance degradation, eliminating the need for external encryption appliances.

Q: What deployment scenarios is this switch best suited for?
A: The DCS-7280DR3AK-54-DC-F excels in high-density 400G spine architectures, data center interconnect (DCI) with long-haul optics, internet exchange peering, EVPN-VXLAN overlay networks, MPLS service provider edge, traffic-engineered MPLS cores, and AI/ML fabrics requiring deep buffers and lossless forwarding.

Q: What power supplies are required and are they included?
A: This DC-F model requires two PWR-3001-DC-RED 3000W DC redundant power supplies for full redundancy. Power supplies are typically sold separately. The switch consumes 933W typical power and 1715W maximum.

Q: Can the 400G ports be broken out to lower speeds?
A: Yes, each QSFP-DD 400G port supports flexible breakout configurations to 2x 200G, 4x 100G, 8x 50G, or other combinations depending on transceiver and cable capabilities, providing deployment flexibility for mixed-speed environments up to 192 total interfaces.

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