• Gray arista dcs-7280sr3-48yc8-f network switch with 48 25g ports and green indicator lights on front panel
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Arista

Arista DCS-7280SR3K-48YC8-F | 7280R3 48-Port 25G Switch, 8x 100G QSFP28, 2Tbps

DCS-7280SR3K-48YC8-F

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Description

The Arista DCS-7280SR3K-48YC8-F is a high-performance 1RU data center switch router engineered for modern leaf-spine architectures and high-bandwidth applications. Featuring 48x 25GbE SFP28 ports and 8x 100GbE QSFP28 uplinks with 2Tbps switching capacity and 4GB deep packet buffers, this model delivers low-latency forwarding with front-to-rear airflow and enhanced routing table capacity. Powered by Arista EOS, it supports advanced Layer 2/3 features, VXLAN, and internet-scale routing for demanding cloud, service provider, and enterprise deployments.

Features

Virtual Output Queue (VOQ) architecture with 4GB deep packet buffers eliminates head-of-line blocking
- Arista FlexRoute engine with internet-scale routing tables (up to 1.4M+ IPv4 routes)
- Layer 2: IEEE 802.1Q VLANs (4096), MLAG for active-active redundancy, link aggregation (LACP)
- Layer 3: Full IP routing with BGP, OSPF, ISIS, static routing, PIM multicast, VRRP
- VXLAN hardware VTEP with bridging and routing for overlay network architectures
- Advanced QoS with 8 egress queues, WRED, traffic shaping, and priority-based flow control
- Accelerated sFlow and IPFIX for hardware-based network telemetry and traffic analysis
- Inband Network Telemetry (INT) support for real-time latency and congestion monitoring
- Algorithmic ACLs for scalable policy-based forwarding and security
- ECMP (up to 512-way) for load balancing across leaf-spine topologies
- Dual hot-swappable power supplies and N+1 redundant hot-swappable fan modules
- Zero Touch Provisioning (ZTP) and CloudVision integration for automated deployment
- Programmable via Python, REST API, and OpenConfig for network automation
- Supports Arista-qualified 1G/10G/25G SFP28 and 40G/100G QSFP28 optics and DAC/AOC cables

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 25GbE SFP28 ports (1G/10G/25G compatible), 8x 100GbE QSFP28 ports (40G/100G with breakout support)
- Switching Capacity: 2 Tbps wire-speed, bidirectional
- Forwarding Rate: 1.2 Bpps (billion packets per second)
- Packet Buffer: 4GB deep buffer with VOQ architecture for lossless forwarding
- Routing Capacity: Enhanced FlexRoute engine supporting up to 1.4M IPv4 routes (large route tables)
- Form Factor: 1RU (1.75" H × 17.4" W × 20.7" D), approximately 10-12 kg
- Airflow: Front-to-rear (port-side to fan-side) cooling
- Power Supply: Dual hot-swappable AC power supplies with 1+1 redundancy
- Management: CLI, REST API, SNMP, 1x Gigabit Ethernet management port, 1x RS-232 serial console, USB
- Operating System: Arista EOS (Extensible Operating System)
- Operating Temperature: 0°C to 40°C (may vary with optics and airflow configuration)
- Certifications: RoHS, FCC Class A, CE compliant

FAQs

Q: What is the difference between the SR3K and standard SR3 variant?
A: The SR3K variant includes enhanced platform resources with larger routing table support (up to 1.4M+ IPv4 routes using FlexRoute profiles), making it ideal for internet peering, service provider edge, and large-scale L3 deployments where internet-scale routing is required.

Q: Can the QSFP28 ports be used for 40G connectivity or breakout configurations?
A: Yes, the 8x QSFP28 ports support 40G and 100G operation, and can be broken out to 4x 10G or 4x 25G per port, allowing up to 80 logical ports for flexible data center connectivity and migration scenarios.

Q: What deployment scenarios is the DCS-7280SR3K-48YC8-F best suited for?
A: This switch is optimized for high-performance leaf/spine data center fabrics with 25G server connectivity and 100G spine uplinks, internet peering, service provider edge routing, cloud data centers, and storage networks requiring low latency and deep buffering for lossless operation.

Q: Does this model require any software licenses for Layer 3 routing features?
A: The DCS-7280SR3K-48YC8-F includes base Layer 3 functionality. Advanced features such as BGP, OSPF, ISIS, PIM, and enhanced L3 capabilities may require optional Arista EOS licenses depending on your deployment requirements. Contact your Arista representative for licensing details.

Q: What is the significance of the front-to-rear airflow designation?
A: The -F suffix indicates front-to-rear (port-side intake to fan-side exhaust) airflow, which is the standard configuration for most data centers with hot-aisle/cold-aisle designs. The corresponding -R model offers rear-to-front airflow for reversed cooling arrangements.

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