• Stack of four silver-colored arista dcs-7280sr3mk-48yc8a-s-flx-f network switches with multiple ports and ventilation grilles
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Arista

Arista DCS-7280SR3MK-48YC8A-S-FLX-F | 7280R3 48-Port 25G Switch, 8x 100G QSFP28, MACsec

DCS-7280SR3MK-48YC8A-S-FLX-F

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Description

The Arista DCS-7280SR3MK-48YC8A-S-FLX-F is a high-performance Layer 2/3 data center switch router designed for cloud, service provider, and enterprise networks. This 1RU platform delivers 48 ports of 25GbE SFP28 and 8 ports of 100GbE QSFP28 with 2 Tbps non-blocking throughput, MACsec encryption, and FlexRoute support for over 256,000 routes. Ideal for leaf-spine architectures, internet peering, and large-scale data center deployments requiring advanced security and internet-scale routing.

Features

Wire-speed Layer 2 and Layer 3 forwarding with sub-microsecond latency
- MACsec encryption on all ports for secure data transmission
- FlexRoute engine supporting 256K+ IPv4 routes, MPLS, EVPN, VXLAN, and Segment Routing
- Dynamic deep packet buffering with Virtual Output Queue (VOQ) architecture for lossless forwarding
- Algorithmic ACLs supporting 100K+ rules with expanded pattern matching
- sFlow and NetFlow support on all ports at full forwarding capacity
- VXLAN hardware VTEP with EVPN control plane
- Multi-Chassis Link Aggregation (MLAG) for active-active Layer 2 topologies
- Equal Cost Multi-Path (ECMP) routing for scalable Layer 3 designs
- Precision Time Protocol (PTP) and SyncE for network timing
- Advanced QoS with 8 hardware queues and flexible scheduling
- Arista EOS with full Linux shell access and programmability
- CloudVision integration for centralized management and telemetry
- Zero Touch Provisioning (ZTP) for automated deployment
- Hot-swappable redundant power supplies and fan modules
- Secure Boot with hardware root of trust

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 (1G/10G/25G capable)
- 8x 100GbE QSFP28 ports (40G/100G capable, with 4x10G or 4x25G breakout)
- Switching capacity: 2 Tbps full-duplex
- Forwarding rate: Up to 2.4 Bpps
- MACsec encryption support on all ports
- FlexRoute engine with support for 256K+ IPv4 routes (MPLS, VXLAN, EVPN, Segment Routing)
- 64 GB DRAM, 120 GB SSD
- Eight-core x86 CPU for enhanced control plane processing
- Form factor: 1RU rack-mountable
- Dimensions: 1.75" H x 17.4" W x 20.7" D
- Weight: Approximately 22-26 lbs
- Power: Dual hot-swappable AC power supplies (1000W each)
- Airflow: Front-to-rear (F suffix)
- Operating system: Arista EOS
- Management: CLI, web GUI, SNMP, REST API, CloudVision
- Redundant hot-swappable fans
- Secure Boot enabled

FAQs

Q: What is MACsec and why is it important?
A: MACsec (Media Access Control Security) provides Layer 2 encryption to secure data between network devices. The 7280SR3MK delivers wire-speed MACsec encryption on all ports, protecting sensitive data in cloud, financial, government, and enterprise environments without performance degradation.

Q: What is the difference between the SR3MK and standard SR3 models?
A: The 'MK' designation indicates MACsec encryption support combined with large routing table capacity ('K' variant with FlexRoute for 256K+ routes). The 'A' suffix adds an eight-core x86 CPU for enhanced control plane processing. This model also includes 64 GB DRAM and 120 GB SSD for demanding automation and telemetry workloads.

Q: Can this switch be used as a spine or leaf switch?
A: Yes, the DCS-7280SR3MK-48YC8A is highly versatile and can function as either a leaf or spine switch in modern data center fabrics. The 48x 25G ports are ideal for leaf deployments connecting to servers, while the 8x 100G uplinks provide spine connectivity. It also supports internet peering and edge routing use cases.

Q: What routing protocols and features are supported?
A: The switch supports comprehensive Layer 3 routing including BGP, OSPF, ISIS, VXLAN, EVPN, MPLS (LDP, RSVP-TE, Segment Routing), PIM multicast, and VRF. With the FLX license, it delivers up to 256K routes with support for advanced MPLS-LSR, VXLAN routing, and traffic engineering capabilities.

Q: Is this switch compatible with multi-vendor environments?
A: Yes, the Arista 7280R3 Series runs standards-based protocols and supports industry-standard optics. Arista EOS provides open APIs, Linux shell access, and integration with third-party automation frameworks, making it highly compatible with multi-vendor data center and service provider networks.

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