• Stack of four silver arista dcs-7280sr3m-48yc8-f 48-port 25g network switches with ventilation grilles and ports
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Arista

Arista DCS-7280SR3M-48YC8-F | 7280R3 48-Port 25G Switch, MACsec, 8x 100G QSFP28

DCS-7280SR3M-48YC8-F

Stock Status: Enquire

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Description

The Arista DCS-7280SR3M-48YC8-F is a high-performance 1RU data center switch router designed for cloud, leaf-spine networks, and data center interconnect deployments. Featuring 48x 25GbE SFP28 ports with MACsec encryption and 8x 100GbE QSFP28 uplinks, it delivers 2.4Tbps switching capacity with 4GB deep buffer for lossless forwarding. Built with front-to-rear airflow and dual hot-swappable AC power supplies, this switch combines advanced security with wire-speed performance for modern enterprise and service provider networks.

Features

IEEE 802.1AE MACsec hardware encryption at line rate on all ports (AES-256-GCM)
- 48x 25GbE SFP28 ports with backward compatibility for 10GbE and 1GbE optics
- 8x 100GbE QSFP28 ports supporting 40G/100G and breakout to 10G/25G/50G
- Arista FlexRoute engine with scalable routing up to 2.7M IPv4 routes
- 4GB shared packet buffer with dynamic allocation for lossless forwarding
- VXLAN hardware offload with EVPN control plane for network virtualization
- Advanced Layer 2 features: VLAN, STP, RSTP, MSTP, LACP, MLAG
- Layer 3 routing: OSPF, BGP, IS-IS, ECMP, VRRP, policy-based routing
- Arista Algorithmic ACLs for high-scale access control and pattern matching
- sFlow and DANZ (Data ANalyZer) for network visibility and telemetry
- CloudVision integration for zero-touch provisioning and network-wide automation
- Precision Time Protocol (PTP/IEEE 1588) and Synchronous Ethernet support
- Dual hot-swappable redundant AC power supplies
- N+1 redundant hot-swappable fan modules with front-to-rear airflow
- EOS programmability with Python, REST API, OpenConfig, and NetConf support
- Advanced QoS with flexible classification, marking, policing, and shaping
- Comprehensive security: uRPF, control plane policing, 802.1X, RADIUS, TACACS+
- Field-replaceable units (FRUs) for fans and power supplies without downtime

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 25GbE SFP28 ports supporting 1G/10G/25G speeds with MACsec encryption
- 8x 100GbE QSFP28 uplinks supporting 40G/100G, breakout to 10G/25G/50G
- Switching capacity: 2.4Tbps wire-speed performance
- Forwarding rate: 1Bpps (1 billion packets per second)
- Packet buffer: 4GB deep buffer for lossless forwarding
- Latency: Sub-microsecond cut-through forwarding
- MAC address table: 384K entries
- IPv4 routing: Up to 1.45M routes with FlexRoute engine
- Security: IEEE 802.1AE MACsec line-rate encryption (AES-256-GCM)
- Form factor: 1RU rack-mountable chassis
- Dimensions: 1.7" H x 17.3" W x 18.4" D (44mm x 440mm x 467mm)
- Weight: Approximately 20.2 lbs (9.2 kg)
- Power consumption: 324W typical
- Power supplies: Dual hot-swappable AC power supplies (redundant)
- Airflow: Front-to-rear (F) with N+1 redundant hot-swappable fans
- Operating temperature: 0°C to 40°C
- Management: CLI, REST API, NetConf, CloudVision, SNMP, sFlow
- Operating system: Arista EOS (Extensible Operating System)

FAQs

Q: What is MACsec and why is it important on this switch?
A: MACsec (IEEE 802.1AE) provides line-rate AES-256-GCM encryption at the data link layer, securing traffic between network devices. The DCS-7280SR3M-48YC8-F supports hardware-based MACsec on all 48x 25GbE and 8x 100GbE ports, enabling point-to-point encryption without performance degradation. This is critical for securing data center interconnects, financial services networks, and compliance-driven environments requiring encrypted east-west traffic.

Q: Can the QSFP28 uplinks be used at different speeds?
A: Yes, the 8x QSFP28 ports support flexible speed options including 100GbE, 40GbE, and breakout configurations to 4x 25GbE or 4x 10GbE per port. This provides deployment flexibility for various uplink requirements, from high-speed spine connectivity to distributed server connections. Breakout support requires compatible cables or optics and EOS configuration.

Q: What is the difference between the SR3M and standard SR3 models?
A: The SR3M variant includes hardware-based MACsec encryption capabilities on all ports, while the standard SR3 model does not. Both share the same port configuration (48x 25GbE + 8x 100GbE) and performance characteristics, but the SR3M adds AES-256 encryption for environments requiring data-in-transit security without impacting forwarding performance.

Q: Is this switch suitable for leaf-spine data center architectures?
A: Absolutely. The DCS-7280SR3M-48YC8-F is purpose-built for modern leaf-spine designs, offering high-density 25GbE server connectivity with 100GbE spine uplinks. The deep 4GB buffer, low latency, and support for VXLAN, EVPN, and ECMP make it ideal for cloud-scale data centers requiring predictable performance and east-west traffic optimization.

Q: What airflow direction does the -F model suffix indicate?
A: The -F suffix denotes front-to-rear (intake to exhaust) airflow, designed for standard data center hot-aisle/cold-aisle configurations where cool air enters from the front and exhausts out the rear. For rear-to-front airflow requirements, the -R variant is available. Both models feature redundant hot-swappable fans and dual AC power supplies.

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