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Arista

Arista DCS-7280CR3-32P4-R | 7280R3 32-Port 100G Switch, 4x 400G OSFP, 4.8Tbps

SKU:DCS-7280CR3-32P4-R

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Description

The Arista DCS-7280CR3-32P4-R is a high-performance 1RU data center switch router designed for large-scale cloud, service provider, and enterprise deployments. It delivers 4.8Tbps of wire-speed throughput with 32 ports of 100G QSFP28 and 4 ports of 400G OSFP connectivity, combined with 8GB of packet buffering for lossless forwarding. Powered by Arista EOS, this rear-to-front airflow model supports scalable Layer 2 and Layer 3 routing, advanced network monitoring, MACsec encryption, and FlexRoute technology for Internet-scale routing tables. Ideal for leaf-spine fabrics, overlay networks, data center interconnect, and high-density aggregation environments.

Features

4.8Tbps wire-speed performance with 32x 100G and 4x 400G ports for ultra-high-density connectivity
- 8GB dynamic deep packet buffers with Virtual Output Queuing (VOQ) for lossless forwarding
- FlexRoute engine with Internet-scale routing supporting up to 5 million routes
- Arista EOS operating system with advanced automation, telemetry, and network visibility
- Layer 2 MLAG and Layer 3 ECMP support for resilient, scalable network designs
- VXLAN overlay support with hardware VTEP for network virtualization
- MACsec encryption for secure data transmission and data integrity
- Algorithmic ACLs for high-scale, efficient access control and policy-based forwarding
- sFlow sampling on all interfaces at full forwarding capacity for network monitoring
- Precision timing and network synchronization capabilities (PTP/IEEE 1588)
- Hot-swappable redundant power supplies and fans for high availability
- 1RU space-efficient form factor with rear-to-front airflow for optimized data center cooling
- Optional built-in SSD for advanced logging, packet capture, and on-switch analytics
- Support for 25G, 40G, 50G, and 100G flexible interface speeds on QSFP28 ports
- Advanced network monitoring with NetDB, DANZ, and open programmability

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: 32x 100G QSFP28 ports (support 25G/40G/50G/100G), 4x 400G OSFP ports
- Switching Capacity: 4.8 Tbps wire-speed performance
- Forwarding Rate: 2 Bpps (billion packets per second)
- Packet Buffer: 8GB of dynamic deep buffering
- MAC Address Table: Up to 768,000 entries
- Latency: Ultra-low latency starting from 3.8 microseconds
- Routing: FlexRoute engine with Internet-scale routing support (up to 5M routes with flexible profiles)
- Layer Support: Layer 2 and Layer 3 switching and routing with ECMP, MLAG, VXLAN, IP/MPLS support
- Security: MACsec encryption, Algorithmic ACLs with high-scale access control
- Form Factor: 1RU rack-mountable fixed configuration
- Airflow: Rear-to-front (back-to-front) cooling
- Power Supplies: Dual redundant hot-swappable AC power supplies (2x PWR-1011-AC)
- Fans: Hot-swappable redundant fans
- Management: Arista EOS with CLI, SNMP, NetDB, advanced telemetry, sFlow, automation support
- Optional Features: Built-in SSD for advanced logging and data capture

FAQs

Q: What network topologies is the DCS-7280CR3-32P4-R best suited for?
A: This switch router is ideal for leaf-spine fabrics, overlay networks (VXLAN), data center interconnect (DCI), IP peering, large-scale Layer 2 MLAG and Layer 3 ECMP designs, and high-density aggregation layers in cloud and enterprise data centers.

Q: Can the 400G OSFP ports be used for lower-speed connections?
A: Yes, the 400G OSFP ports are flexible and can be configured to support 100G connections using appropriate optics or breakout cables, providing deployment flexibility for various network requirements.

Q: What is the difference between the -R and -F airflow models?
A: The -R suffix indicates rear-to-front (back-to-front) airflow, where air flows from the fan side to the port side. The -F model has front-to-rear airflow. Select the model that matches your data center hot aisle/cold aisle cooling architecture.

Q: Does this switch support Internet-scale routing tables?
A: Yes, the DCS-7280CR3-32P4-R features Arista's FlexRoute engine and EOS NetDB, enabling scalability up to 5 million routes with flexible forwarding profiles, making it suitable for Internet peering and service provider edge deployments.

Q: What redundancy and high availability features are included?
A: The switch includes dual redundant hot-swappable AC power supplies and hot-swappable fans for maximum uptime. It also supports MLAG for Layer 2 redundancy and ECMP for Layer 3 load balancing and resilience.

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