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Arista

Arista DCS-7280CR3A-24D12-FLX-F | 7280R3A 24-Port 100G + 12-Port 400G Switch, 7.2Tbps

SKU:DCS-7280CR3A-24D12-FLX-F

Stock Status: Enquire

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Description

The Arista DCS-7280CR3A-24D12-FLX-F is a high-performance data center switch router designed for demanding spine-leaf architectures and large-scale cloud environments. Featuring 24 x 100GbE QSFP ports and 12 x 400GbE QSFP-DD uplink ports, it delivers 7.2 Tbps of wire-speed throughput with 8GB of deep packet buffering. The FLX license enables advanced routing with support for up to 256K routes, MPLS, EVPN-VXLAN, and segment routing, making it ideal for modern data center fabric and internet peering deployments.

Features

Arista EOS (Extensible Operating System) with modular architecture and in-service software upgrades
- VXLAN and EVPN support for Layer 2 and Layer 3 overlay networking and data center interconnect (DCI)
- Advanced routing protocols: OSPF, IS-IS, BGP, PIM, and segment routing (SR) with up to 256K routes
- MPLS label switching (LSR) for carrier-grade networking and service provider environments
- FlexRoute engine with flexible table allocation for MAC, ARP, routing, and host entries
- Virtual output queuing (VoQ) architecture for zero head-of-line blocking and predictable low latency
- Deep packet buffering (8 GB) for burst absorption and lossless forwarding in high-traffic scenarios
- Precision timing with IEEE 1588 PTP and SyncE support, OCXO oscillator, and PPS/10M/ToD inputs
- Accelerated sFlow for wire-speed flow sampling at full forwarding capacity (2.7 Bpps)
- Inband Network Telemetry (INT) for per-flow monitoring of latency, drops, congestion, and path visibility
- Multi-Chassis Link Aggregation (MLAG) for active-active Layer 2 redundancy
- Equal-Cost Multi-Path (ECMP) routing for scalable Layer 3 leaf-spine designs
- IPv4 and IPv6 unicast and multicast routing with PIM-SM, PIM-SSM, and IGMP snooping
- Access Control Lists (ACLs) with up to 100K entries per forwarding engine for policy enforcement
- VLAN support for Layer 2 segmentation and IEEE 802.1Q tagging
- Spanning Tree Protocol (STP, RSTP, MSTP) for loop prevention in Layer 2 topologies
- Hot-swappable redundant power supplies and fan modules for high availability
- Front-to-rear airflow design for efficient cooling in hot-aisle/cold-aisle data center layouts
- RADIUS and TACACS+ authentication for centralized access control and security
- Zero Touch Provisioning (ZTP) for automated deployment and configuration
- REST API and CloudVision integration for programmable network automation and telemetry

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: 24 x 100GbE QSFP ports, 12 x 400GbE QSFP-DD ports
- Maximum Port Flexibility: Up to 72 x 100G, 12 x 400G, or 116 x 25/10G interfaces
- Switching Capacity: 7.2 Tbps (14.4 Tbps full-duplex)
- Forwarding Rate: 2.7 billion packets per second (Bpps)
- Latency: From 3.8 microseconds
- Packet Buffer: 8 GB deep buffer memory
- Routing Capacity: Up to 256K routes with FLX-Lite license (OSPF, ISIS, BGP, PIM)
- System Memory: 64 GB RAM
- Storage: 480 GB SSD
- CPU: Eight-core x86 processor
- Dimensions (W x H x D): 48.3 x 4.4 x 59.2 cm (19 x 1.75 x 23.3 inches), 1RU
- Weight: 14.8 kg (32.6 lbs)
- Airflow: Front-to-rear (port side to fan side)
- Power Supply: Dual redundant AC power supplies
- Management: CLI, SNMP, Telnet, REST API, EOS CloudVision
- Timing: IEEE 1588 PTP, SyncE with OCXO and PPS/10M/ToD inputs

FAQs

Q: What is the difference between the FLX-F and base DCS-7280CR3A-24D12-F models?
A: The FLX-F variant includes the FLX-Lite software license, which enables advanced routing capabilities with up to 256K routes, full OSPF, ISIS, BGP, PIM support, EVPN, VXLAN, segment routing, and base MPLS LSR functionality. The base model requires separate licensing for these features.

Q: Can this switch support both 100G and 400G optics simultaneously?
A: Yes, the DCS-7280CR3A-24D12-FLX-F supports mixed-speed deployments with 24 x QSFP ports for 100G and 12 x QSFP-DD ports for 400G operating simultaneously. The QSFP ports can also operate at 40G or breakout to 4 x 25G/10G, and QSFP-DD ports can support 2 x 200G or 8 x 50G breakout modes.

Q: Is this switch suitable for spine or leaf deployment in a data center fabric?
A: The 7280CR3A-24D12-FLX-F is ideal for both spine and leaf roles. As a leaf switch, the 100G ports connect servers or ToR aggregation, while the 400G uplinks provide high-bandwidth connectivity to spine switches. As a spine, it supports high-density 100G and 400G east-west traffic with low latency and deep buffers for burst absorption.

Q: What routing and overlay protocols are supported with the FLX license?
A: The FLX-Lite license supports up to 256K IPv4/IPv6 routes with OSPF, ISIS, BGP, and PIM. It includes EVPN for Layer 2 and Layer 3 VPN services, VXLAN overlay networking, segment routing (SR), and base MPLS label switching (LSR). For larger route tables exceeding 256K routes or advanced MPLS LER functionality, the full FLX license is required.

Q: Does this switch support MACsec or other encryption features?
A: The base 7280CR3A model does not include hardware encryption. For line-rate MACsec, IPsec, and VXLAN encryption (TunnelSec), you would need the 7280CR3AM-24D12 or 7280CR3AK-24D12 variants, which include encryption-capable ASICs on all ports.

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