• Stack of four silver-colored arista dcs-7280sr3a-48yc8-flx-f network switches with multiple ports and ventilation grilles
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Arista

Arista DCS-7280SR3A-48YC8-FLX-F | 7280R3A 48-Port 50G Switch, 6x 200G QSFP, 3.6Tbps

DCS-7280SR3A-48YC8-FLX-F

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Description

The Arista DCS-7280SR3A-48YC8-FLX-F is a high-performance data center switch router delivering 3.6 Tbps throughput in a compact 1RU form factor. Featuring 48 ports of 10/25/50G SFP flexibility and 6 ports of 200G QSFP uplinks, this advanced switch combines deep buffer virtual output queue architecture with FLX-licensed routing capabilities supporting over 256K routes, MPLS, VXLAN, and Segment Routing. Ideal for spine-leaf architectures, IP storage networks, and service provider edge deployments requiring low-latency forwarding and scalable Layer 2/3 features.

Features

Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking for lossless forwarding
- 4 GB deep packet buffer with dynamic allocation for burst absorption
- FlexRoute engine with internet-scale routing table support (over 256K routes)
- VXLAN and EVPN support for overlay network virtualization
- Segment Routing (SR) and advanced MPLS-LER/LSR capabilities with traffic engineering
- Algorithmic ACLs with expanded pattern matching supporting over 24K entries
- Precision Time Protocol (PTP) IEEE 1588v2 for sub-microsecond time synchronization
- Advanced telemetry and monitoring with sFlow, DANZ, and latency analysis (LANZ)
- Zero Touch Provisioning (ZTP) for automated deployment
- CloudVision integration for centralized management and network-wide automation
- RESTful API and Python scripting for programmability and DevOps workflows
- MACsec-ready hardware for future encryption capabilities
- Stateful Fault Repair (SFR) for self-healing software reliability
- Multi-Chassis Link Aggregation (MLAG) for active-active redundancy
- Hot-swappable power supplies and fan modules for continuous operation
- Energy-efficient design with platinum-rated power supplies
- Runs Arista EOS with full Linux shell access for advanced customization

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: 48x 10/25/50G SFP ports, 6x 200G QSFP ports
- Switching Capacity: 3.6 Tbps wire speed (7.2 Tbps full duplex)
- Forwarding Rate: Up to 2.7 Bpps
- Packet Buffer: 4 GB deep buffer memory with virtual output queue architecture
- Latency: Sub-microsecond port-to-port latency
- Routing Table: Over 256K IPv4 unicast routes (FLX license included)
- MAC Address Table: Up to 384K MAC addresses
- Layer 2 Features: VLAN (4096), MLAG, LACP, RSTP, MSTP, Q-in-Q
- Layer 3 Features: BGP, OSPF, ISIS, PIM, VXLAN, EVPN, Segment Routing, MPLS-LER/LSR
- Management: CLI, Web GUI, RESTful API, SNMP v1/v2c/v3, CloudVision support
- CPU: Multi-core x86 processor with ECC-protected DRAM
- Power Supply: Dual hot-swappable AC power supplies (1+1 redundancy)
- Airflow: Front-to-rear airflow (-F suffix)
- Form Factor: 1RU fixed configuration, 19-inch rack mountable
- Operating Temperature: 0°C to 40°C
- Certifications: FCC, CE, RoHS compliant

FAQs

Q: What is the difference between the 7280SR3A-48YC8 and the standard 7280SR3-48YC8?
A: The 7280SR3A is the next-generation R3A platform with enhanced capabilities including 50G SFP support and 200G QSFP uplinks (versus 25G/100G on the standard R3), 3.6 Tbps throughput (versus 2 Tbps), improved ASIC architecture, and support for advanced features like TunnelSec and MACsec options. The R3A also offers better power efficiency and expanded routing scale options.

Q: What does the FLX license included with this model provide?
A: The FLX license enables full Layer 3 routing capabilities supporting up to 256K IPv4 routes, advanced MPLS LER/LSR functions, Segment Routing, EVPN, VXLAN, and over 24K ACL entries. This makes the switch suitable for internet peering, service provider edge roles, and large-scale data center fabrics requiring advanced routing and traffic engineering capabilities.

Q: Can the 200G QSFP ports be broken out to lower speeds?
A: Yes, the 200G QSFP ports support flexible breakout configurations including 2x 100G, 4x 50G, and 8x 25G modes, allowing you to scale connectivity and match uplink speeds to your specific fabric requirements. This flexibility enables smooth migration paths and mixed-speed deployments.

Q: Is this switch suitable for spine or leaf roles in a Clos fabric?
A: The 7280SR3A-48YC8 excels in both roles. As a leaf switch, the 48 SFP ports provide high-density server connectivity at 10G/25G/50G speeds while the 6x 200G uplinks connect to spine switches. As a small-to-medium spine, it can aggregate multiple leaf switches efficiently. The deep buffer and low latency make it ideal for modern EVPN/VXLAN data center fabrics.

Q: What redundancy features are included for high availability?
A: The switch includes dual hot-swappable 1+1 redundant AC power supplies, hot-swappable fan modules with N+1 redundancy, and supports Arista's Stateful Fault Repair for self-healing software. Combined with MLAG for link-level redundancy and live software patching capabilities, the platform is designed for carrier-grade continuous operation in mission-critical environments.

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