• Stack of five silver arista dcs-7280cr2a-30-f 100g switches with ethernet ports and blue accent lighting
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Arista

Arista DCS-7280CR2A-30-F | 7280R2 30-Port 100G Switch, 6.4Tbps, 16GB Buffer

DCS-7280CR2A-30-F

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Description

The Arista DCS-7280CR2A-30-F is a high-performance 1RU data center switch engineered for cloud-scale deployments and high-performance computing environments. With 30 QSFP28 100GbE ports offering flexible breakout to 25GbE or 10GbE, this switch delivers 6.4Tbps of non-blocking throughput with ultra-deep 16GB packet buffers and sub-4-microsecond latency. Features AlgoMatch policy-based forwarding, advanced Layer 2/3 routing, VXLAN overlay support, and dual 1600W AC power supplies with front-to-rear airflow for reliable, scalable data center operations.

Features

Virtual Output Queue (VOQ) deep buffer architecture with 16GB packet memory
- Non-blocking wire-speed performance on all 30x 100GbE ports simultaneously
- AlgoMatch-2 policy engine for advanced packet classification and traffic steering
- Full Layer 2/3 switch router: BGP, OSPF, IS-IS, MPLS (LDP, RSVP-TE), SR-MPLS, EVPN
- VXLAN gateway and routing for overlay network virtualization
- 128-way Equal-Cost Multi-Path (ECMP) routing for scalable leaf-spine fabrics
- Multi-Chassis Link Aggregation (MLAG) for active-active L2 redundancy
- Arista Latency Analyzer (LANZ) for real-time microburst and congestion monitoring
- Precision Data Analyzer (DANZ) for advanced traffic mirroring and filtering
- Accelerated sFlow for high-performance traffic sampling and flow analysis
- IEEE 1588v2 PTP hardware-assisted Precision Time Protocol with boundary clock support
- CloudVision integration for network-wide automation and telemetry
- Zero-Touch Provisioning (ZTP) for rapid deployment and configuration
- Streaming telemetry via gNMI and Arista eAPI with OpenConfig support
- Arista EOS: modular Linux-based OS with stateful process separation and hitless upgrades
- Hot-swappable redundant 1600W AC power supplies and N+1 fan trays
- FlexRoute scalable routing with support for Internet peering and large route tables
- Advanced QoS with weighted fair queuing and priority-based scheduling
- Python and Bash scripting for custom automation and event-driven workflows
- Energy-efficient design with front-to-rear airflow for hot-aisle/cold-aisle data centers

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

30x 100GbE QSFP28 ports with breakout support (4x25GbE or 4x10GbE per port)
- Switching capacity: 6.4 Tbps non-blocking
- Forwarding rate: 2.51 Bpps
- Latency: 3.8 microseconds (store-and-forward)
- Packet buffer: 16GB deep buffer with Virtual Output Queue (VOQ) architecture
- Routing table capacity: 768K MAC addresses, 768K IPv4/IPv6 host routes, 1.3M IPv4 LPM routes
- Layer 2/3 features: BGP, OSPF, IS-IS, MPLS, VXLAN, EVPN, 128-way ECMP
- AlgoMatch-2 advanced policy-based forwarding and traffic engineering
- Management: Multi-core x86 CPU, 16GB DRAM, Arista EOS operating system
- Power supplies: 2x 1600W AC hot-swappable PSUs (PWR-1600AC-F), front-to-rear airflow
- Fans: 5x hot-swappable fans with N+1 redundancy (FAN-7001D-F)
- Form factor: 1RU rack-mountable chassis
- Monitoring: LANZ (Latency Analyzer), DANZ, Accelerated sFlow, streaming telemetry
- Timing: IEEE 1588v2 PTP hardware-assisted Precision Time Protocol
- Included: 2x C19-C20 power cords, console cable

FAQs

Q: What is AlgoMatch and how does it benefit this switch?
A: AlgoMatch is Arista's hardware-software innovation that enables scalable policy-based forwarding, flexible access control lists, and advanced traffic engineering at wire speed. It provides higher scale ACL capacity, efficient L4 port range matching, and flow-based telemetry without performance penalties, making it ideal for multi-tenant cloud and service provider environments.

Q: Can I use this switch as a leaf or spine in a data center fabric?
A: Yes, the DCS-7280CR2A-30-F is designed for both leaf and spine roles in modern data center architectures. It supports MLAG for Layer 2 leaf-spine topologies, 128-way ECMP for Layer 3 fabrics, and VXLAN overlay for network virtualization. Its deep buffers and low latency make it ideal for handling bursty traffic patterns common in leaf-spine designs.

Q: What breakout configurations are supported on the QSFP28 ports?
A: Each 100GbE QSFP28 port can operate natively at 100GbE or break out to 4x25GbE or 4x10GbE using standard breakout cables. This provides deployment flexibility, supporting up to 120 ports at 25GbE or 120 ports at 10GbE, enabling mixed-mode configurations for smooth network migrations.

Q: What is the benefit of the 16GB packet buffer?
A: The ultra-deep 16GB packet buffer combined with Virtual Output Queue architecture eliminates head-of-line blocking and virtually eliminates packet drops during traffic bursts. This is critical for storage networks, big data applications, and RoCEv2 deployments where TCP incast and microburst events can severely impact performance on smaller-buffer switches.

Q: Does this switch support full Internet routing tables?
A: Yes, the DCS-7280CR2A-30-F supports up to 1.3M IPv4 LPM routes and 1M IPv6 LPM routes, providing sufficient capacity for full Internet routing tables. This makes it suitable for Internet peering, data center interconnect, and service provider edge deployments that require extensive route table capacity.

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