• Stack of four silver arista dcs-7280sr3k-48yc8a-dc-f 7280r3 48-port 25g network switches with 8x 100g qsfp28 ports
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Arista

Arista DCS-7280SR3K-48YC8A-DC-F | 7280R3 48-Port 25G Switch, 8x 100G QSFP28, DC

DCS-7280SR3K-48YC8A-DC-F

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Description

The Arista DCS-7280SR3K-48YC8A-DC-F is a high-performance 1RU data center switch router designed for large-scale cloud and service provider networks. With 48 ports of 25GbE SFP28 connectivity and 8 ports of 100GbE QSFP28 uplinks, it delivers 2 Tbps of wire-speed throughput with advanced FlexRoute capabilities supporting over 5 million IPv4 routes. The K variant features 64 GB DRAM and 120 GB SSD, while the A suffix provides an eight-core x86 CPU for enhanced control plane processing, making it ideal for leaf-spine architectures and internet-scale routing deployments.

Features

Layer 2 and Layer 3 switching and routing capabilities
- FlexRoute engine for internet-scale routing with over 5M IPv4 routes
- Eight-core x86 CPU (A variant) for enhanced control plane performance
- Dynamic deep buffering (4 GB) for lossless forwarding
- Advanced routing protocols: BGP, OSPF, IS-IS, PIM, MPLS, Segment Routing
- Network virtualization: VXLAN, EVPN, VRF-Lite
- Multi-Chassis Link Aggregation (MLAG) for active-active redundancy
- Equal-Cost Multi-Path (ECMP) routing with up to 128-way load balancing
- Algorithmic ACLs for scalable access control and policy-based forwarding
- Priority Flow Control (PFC, IEEE 802.1Qbb) for lossless Ethernet
- Data Center Bridging Exchange (DCBX, IEEE 802.1Qaz)
- Accelerated sFlow and IPFIX for network telemetry and monitoring
- Precision Time Protocol (PTP, IEEE 1588) support
- Hierarchical QoS (H-QoS) for granular traffic management
- Advanced security: MACsec encryption support, AAA, RADIUS, TACACS+
- Zero Touch Provisioning (ZTP) for automated deployment
- CloudVision integration for centralized management and analytics
- Hot-swappable redundant power supplies and fans
- Modular Database (MDB) with flexible forwarding profiles
- Comprehensive automation via REST API, NetConf, gRPC, OpenConfig

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, support 4x10G and 4x25G breakout)
- Switching capacity: 2.0 Tbps (4.0 Tbps full duplex)
- Forwarding rate: 1 Bpps (billion packets per second)
- System memory: 64 GB DRAM (K variant)
- Storage: 120 GB SSD (K variant)
- CPU: Eight-core x86 processor (A variant)
- FlexRoute engine supports over 5 million IPv4 routes
- System buffer: 4 GB total
- Form factor: 1RU, 19-inch rack mountable
- Dimensions: 1.75" H x 17.4" W x 20.7" D (44 mm x 442 mm x 526 mm)
- Weight: Approximately 22-26 lbs (10-12 kg)
- Power: 2x DC power supplies, front-to-rear airflow
- Latency: From 3.8 microseconds
- Management: CLI, REST API, SNMP, NetConf, gRPC
- Operating system: Arista EOS (Extensible Operating System)
- Hot-swappable power supplies and fan modules
- N+1 redundant fan configuration

FAQs

Q: What routing scale does the SR3K variant support?
A: The K variant includes FlexRoute capabilities supporting over 5 million IPv4 routes with 64 GB DRAM and 120 GB SSD, making it suitable for internet-scale routing, BGP peering, and large service provider deployments.

Q: What is the difference between the A suffix models?
A: The A suffix indicates an eight-core x86 CPU for enhanced control plane processing, providing greater computational power for complex routing protocols, network automation, and telemetry applications compared to standard models.

Q: Can the QSFP28 ports be used with different speeds?
A: Yes, the 8x QSFP28 ports support 40G and 100G speeds natively, and can also be broken out into 4x10G or 4x25G connections per port using appropriate breakout cables, providing deployment flexibility.

Q: What is the DC-F designation in the model number?
A: DC indicates DC power supply configuration (as opposed to AC), and F denotes front-to-rear airflow, where cool air enters through the port side and exhausts from the rear, designed for hot-aisle/cold-aisle data center deployments.

Q: What advanced features does Arista EOS provide?
A: Arista EOS supports VXLAN, EVPN, MPLS, Segment Routing, BGP, OSPF, IS-IS, MLAG, advanced QoS, MACsec encryption, sFlow/IPFIX telemetry, Zero Touch Provisioning, and extensive automation via REST APIs, making it ideal for modern SDN and cloud-scale networks.

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