• Gray metal arista dcs-7280sr2-48yc6-f network switch with 48 black 25g ports and blue indicator lights on front panel
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Arista

Arista DCS-7280SR2A-48YC6-R | 7280R2 48-Port 25G Switch, AlgoMatch, 6x 100G QSFP28

DCS-7280SR2A-48YC6-R

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Description

The Arista DCS-7280SR2A-48YC6-R is a high-performance 1RU data center switch delivering 48 ports of 25GbE SFP28 connectivity and 6 ports of 100GbE QSFP28 uplinks with AlgoMatch technology for advanced packet matching and policy enforcement. Built for leaf-spine, cloud-scale fabrics, and high-frequency trading environments, it combines 3.6 Tbps switching capacity with ultra-low latency of 3.8 microseconds. The rear-to-front airflow design, redundant hot-swappable power supplies, and Arista EOS software ensure reliable, scalable operation for demanding enterprise and service provider networks.

Features

Arista Extensible Operating System (EOS) with modular architecture
- AlgoMatch technology for scalable ACLs, policy-based forwarding, and flow-based telemetry
- Layer 2 features: VLANs, MLAG, STP, RSTP, MSTP, LACP
- Layer 3 features: OSPF, BGP, IS-IS, VRF, 128-way ECMP routing
- VXLAN hardware offload with EVPN control plane for overlay networks
- Deep packet buffer (8 GB) for lossless forwarding and microburst absorption
- Virtual Output Queues (VOQ) per port to eliminate head-of-line blocking
- Accelerated sFlow for high-performance traffic sampling up to 1.6 Mpps
- LANZ (Latency Analyzer) for real-time microburst and congestion detection
- Precision Time Protocol (PTP/IEEE 1588) support
- MACsec encryption support for secure Layer 2 connectivity
- Comprehensive QoS and traffic shaping capabilities
- Zero Touch Provisioning (ZTP) for automated deployment
- CloudVision integration for centralized management and telemetry
- Hot-swappable redundant power supplies and fan modules (N+1 redundancy)
- Advanced streaming telemetry with gRPC and OpenConfig support
- NetFlow, sFlow, and DANZ mirroring for network visibility
- RESTful API and Python scripting for automation

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

Ports: 48x 25GbE SFP28, 6x 100GbE QSFP28
- Port speed options: 1/10/25G on SFP28 ports (configurable in groups of 4); 40/100G on QSFP28 ports
- Switching capacity: 3.6 Tbps full duplex
- Forwarding rate: 1.67 Bpps (billion packets per second)
- Latency: ~3.8 microseconds
- Packet buffer: 8 GB shared memory
- MAC address table: 768,000 entries
- CPU: Quad-core x86 processor
- System memory: 8 GB (expandable to 32 GB)
- Flash storage: 4 GB
- AlgoMatch technology for efficient packet matching and policy-based forwarding
- Airflow: Rear-to-front (back-to-front)
- Power supplies: Dual redundant AC (1+1 hot-swappable)
- Typical power consumption: 263W; maximum 381W
- Dimensions: 48.3 x 4.4 x 52.3 cm (19 x 1.75 x 20.6 inches), 1RU
- Weight: 10.4 kg (22.9 lbs)
- Management: Arista EOS, CLI, web GUI, SNMP, syslog, CloudVision
- Operating temperature: 0°C to 40°C
- Compliance: NEBS Level 3, RoHS, FCC Class A, CE, ETSI

FAQs

Q: What is AlgoMatch technology in the DCS-7280SR2A-48YC6-R?
A: AlgoMatch is an Arista innovation that combines general-purpose memory with advanced software algorithms to provide efficient, scalable packet matching for access control, policy-based forwarding, and network telemetry. It delivers higher scale and performance than traditional TCAM-based solutions while being more cost and power efficient.

Q: What is the difference between the DCS-7280SR2A-48YC6-R and DCS-7280SR2-48YC6-R?
A: The DCS-7280SR2A-48YC6-R includes AlgoMatch technology for advanced packet matching and policy enforcement, while the DCS-7280SR2-48YC6-R does not. Both models have identical port configurations and performance but the 'A' variant provides enhanced flexibility for ACLs, flow matching, and telemetry at scale.

Q: What deployment scenarios is the DCS-7280SR2A-48YC6-R best suited for?
A: This switch is ideal for leaf-spine data center fabrics, high-frequency trading, cloud service provider networks, storage clusters, and latency-sensitive applications requiring 25G server connectivity with 100G uplinks. It supports VXLAN EVPN, MLAG, and ECMP routing for modern IP fabrics.

Q: Can I mix 10G, 25G, 40G, and 100G speeds on this switch?
A: Yes. The 48 SFP28 ports support 1/10/25G speeds (configurable in groups of four ports), and the 6 QSFP28 ports support 40G or 100G operation. You can also break out QSFP28 ports to 4x25G or 4x10G using appropriate breakout cables and optics.

Q: What airflow direction does the -R suffix indicate?
A: The -R suffix denotes rear-to-front (back-to-front) airflow, where air is drawn in from the fan side and exhausted through the port side. This is designed for data centers with hot-aisle containment where cold air is at the rear and hot exhaust is at the front. For front-to-rear airflow, choose the -F variant.

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