• Gray metal arista dcs-7280cr3a-48d6-flx-f network switch with 48 ports and ventilation slots displayed from the back side
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Arista

Arista DCS-7280CR3A-48D6-FLX-F | 7280R3A 48-Port 100G Switch, 6x 400G, FLX License

DCS-7280CR3A-48D6-FLX-F

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Description

The Arista DCS-7280CR3A-48D6-FLX-F is a high-performance data center switch router designed for large-scale cloud, enterprise, and service provider environments. This 7280R3A Series platform delivers 48x 100GbE QSFP ports and 6x 400GbE QSFP-DD ports with 7.2 Tbps switching capacity, 8GB deep packet buffers, and front-to-rear airflow. The FLX license provides full routing with up to 2M routes, advanced MPLS, EVPN, VXLAN, and Segment Routing capabilities.

Features

Non-blocking wire-speed Layer 2 and Layer 3 forwarding
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- 8GB deep packet buffers for lossless performance in congested scenarios
- FlexRoute engine with support for up to 2 million IPv4/IPv6 routes (with FLX license)
- Advanced EVPN-VXLAN overlay networking with multi-tenancy support
- MPLS LER/LSR with Segment Routing, LDP, RSVP-TE, and FRR capabilities
- Multi-Chassis Link Aggregation (MLAG) for active-active Layer 2 topologies
- ECMP and UCMP routing with up to 128-way load balancing
- Hierarchical QoS with 8 egress queues and flexible traffic shaping
- IEEE 1588v2 PTP and Synchronous Ethernet (SyncE) with OCXO for precision timing
- Accelerated sFlow and IPFIX for line-rate network telemetry
- Inband Network Telemetry for deep visibility and troubleshooting
- Advanced ACLs with support for over 24,000 entries and algorithmic matching
- Hot-swappable power supplies and fan modules for high availability
- Arista EOS with Zero Touch Provisioning (ZTP) and CloudVision integration
- Stateful fault repair and graceful restart protocols
- OpenFlow and REST API support for SDN integration
- Advanced mirroring and TAP aggregation capabilities

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

48x 100GbE QSFP ports (supports 40G/100G/50G/25G/10G with breakouts)
- 6x 400GbE QSFP-DD ports (supports 400G/200G/100G/40G)
- Maximum 68x 100G or 6x 400G ports
- Switching capacity: 7.2 Tbps (14.4 Tbps full-duplex)
- Forwarding rate: 2.7 Bpps (billion packets per second)
- Packet buffer: 8 GB deep buffer with VOQ architecture
- Latency: From 3.8 microseconds
- CPU: Eight-core x86 processor
- Memory: 64 GB system RAM, 120 GB SSD storage
- Maximum 116 total interfaces (with breakouts)
- FLX License: Full routing up to 2M routes, advanced MPLS-LER/LSR, EVPN, VXLAN, Segment Routing, >24K ACL entries
- Power: 2x 1500W hot-swappable AC power supplies (PWR-1511-AC)
- Cooling: Hot-swappable fan modules, front-to-rear airflow
- Form factor: 2RU rackmount
- Management: EOS with CLI, REST API, SNMP, ZTP, CloudVision support
- Operating temperature: 0°C to 40°C
- Precision timing: PTP (IEEE 1588) and SyncE with OCXO

FAQs

Q: What is the difference between the base model and the FLX licensed version?
A: The FLX license unlocks advanced routing and switching features including full routing tables up to 2 million routes, advanced MPLS LER/LSR capabilities, EVPN, VXLAN, Segment Routing, and over 24,000 ACL entries. The base model has more limited routing table size (256K routes) and basic MPLS LSR only.

Q: What optic types are supported on this switch?
A: The 48 QSFP ports support 100GBASE QSFP28 optics and 40GBASE QSFP+ optics with breakout support for 4x25G, 4x10G, or 2x50G. The 6 QSFP-DD ports support 400GBASE QSFP-DD and 200GBASE optics. All ports support standard Arista or compatible transceivers including SR, LR, ER, and AOC/DAC cables.

Q: What network architectures is this switch designed for?
A: The 7280CR3A-48D6 is ideal for leaf-spine data center fabrics, high-performance storage networks, Internet exchanges, and content delivery networks. It supports MLAG for Layer 2 designs, ECMP for Layer 3 designs, and EVPN-VXLAN overlay architectures with deep buffers to handle incast and burst traffic scenarios.

Q: Does this switch support MACsec encryption?
A: The base 7280CR3A model does not include MACsec encryption. For encryption capabilities, you need the 7280CR3AM model which includes IEEE 802.1AE MACsec on all ports, or the 7280CR3AK model which adds TunnelSec encryption along with large routing tables.

Q: What is the airflow direction and what does the -F suffix indicate?
A: The -F suffix indicates front-to-rear (port-side to fan-side) airflow, also called red airflow in Arista terminology. This model includes 2x AC power supplies. The -R variant offers rear-to-front airflow, while the # suffix denotes configurable fans and PSU for flexible deployment.

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