• Gray metal arista dcs-7280cr3k-32p4-flx-r 32-port 100g switch with ventilation slots shown from the back side
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Arista

Arista DCS-7280CR3K-32P4-FLX-R | 7280R3 32-Port 100G Switch, 4x 400G OSFP, 4.8Tbps

DCS-7280CR3K-32P4-FLX-R

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Description

The Arista DCS-7280CR3K-32P4-FLX-R is a high-density 1RU data center switch router delivering 4.8 Tbps of non-blocking throughput with 32x 100GbE QSFP28 ports and 4x 400GbE OSFP ports. Built on a deep buffer VOQ architecture with 8GB packet memory and 2 Bpps forwarding rate, it provides full Layer 3 routing with BGP, OSPF, MPLS, SR-TE, EVPN, and VXLAN capabilities. The FLX license variant supports over 256K routes, advanced MPLS features, and large-scale routing tables, making it ideal for internet peering, data center interconnect, and cloud networking deployments.

Features

Full Layer 2/3 switch router with hardware-accelerated routing and switching
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- FlexRoute technology with over 5 million IPv4 routes and 5 million IPv6 routes (K-variant)
- FLX licensing with over 256K routes, advanced MPLS, EVPN, VXLAN, and Segment Routing
- 512-way ECMP for optimal load distribution across multiple paths
- Algorithmic ACLs supporting 100,000+ rules without TCAM limitations
- IEEE 1588v2 PTP and SyncE for hardware-assisted precision timing
- Comprehensive QoS with 8 queues per port, strict priority, WRR, and WFQ scheduling
- LANZ (Latency Analyzer) for real-time congestion detection and monitoring
- Accelerated sFlow for hardware-based traffic sampling and analysis
- Streaming telemetry via gNMI, eAPI, and OpenConfig for modern automation
- CloudVision integration for centralized network-wide visibility and control
- Zero-Touch Provisioning (ZTP) for automated deployment
- Hot-swappable redundant power supplies and fan trays for high availability
- Advanced Event Management (AEM) for programmable network automation
- DANZ for advanced traffic mirroring, SPAN/TAP aggregation, and packet filtering
- Arista EOS with stateful fault repair, in-service software upgrades, and configuration rollback
- Python and Bash scripting support for custom automation workflows

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

32x 100GbE QSFP28 ports supporting 100G, 50G, 40G, 25G, and 10G speeds via breakout
- 4x 400GbE OSFP ports supporting 400G, 200G, and 100G line rates
- Switching capacity: 4.8 Tbps full-duplex (9.6 Tbps aggregate)
- Forwarding rate: 2 Bpps (2 billion packets per second)
- Packet buffer memory: 8GB deep buffer with VOQ architecture
- Latency: 3.8 microseconds store-and-forward
- Processor: Quad-core x86 CPU
- System memory: 64GB DRAM
- Storage: 120GB SSD
- MAC address table: 768,000 entries
- Routing capacity: Over 256K IPv4/IPv6 routes with FLX license
- Management: 1x 100/1000 Mbps Ethernet, 1x RS-232 console port, 1x USB
- Power supply: Dual redundant AC power supplies (1+1)
- Power consumption: 535W typical, 851W maximum
- Airflow: Rear-to-front (port side intake, fan side exhaust)
- Form factor: 1RU rackmount, 48.3 x 4.4 x 58.2 cm (19 x 1.75 x 23.6 inches)
- Weight: Approximately 12.7 kg (28 lbs)
- Operating system: Arista EOS

FAQs

Q: What does the FLX license include on this model?
A: The FLX license provides full routing capabilities with over 256K routes, EVPN, VXLAN, Segment Routing, and advanced MPLS features including LER/LSR, LDP, RSVP-TE, and BGP Label Unicast. It also supports extensive ACL capacity and algorithmic ACLs for large-scale data center and service provider deployments.

Q: What is the difference between the -R and -F suffix models?
A: The -R suffix indicates rear-to-front airflow where cool air enters from the port side and exhausts through the fan side. The -F variant has front-to-rear airflow. Choose based on your data center hot/cold aisle configuration for optimal cooling efficiency.

Q: Can the 100G QSFP28 ports be broken out to lower speeds?
A: Yes, the 32x 100G QSFP28 ports support flexible breakout configurations including 50GbE, 40GbE (with QSFP+ modules), 25GbE, and 10GbE, allowing up to 96 total interfaces for maximum deployment flexibility.

Q: What Layer 3 routing protocols are supported?
A: The switch supports comprehensive Layer 3 routing including BGP, OSPF, IS-IS, static routing, MPLS (LDP, RSVP-TE, BGP LU), Segment Routing with Traffic Engineering (SR-TE), EVPN, VXLAN routing, and 512-way ECMP for advanced load balancing.

Q: Is this switch suitable for spine-leaf data center architectures?
A: Absolutely. With 4.8 Tbps throughput, 8GB deep packet buffers, ultra-low 3.8μs latency, and support for modern overlay technologies like VXLAN and EVPN, the 7280CR3K-32P4-FLX-R is purpose-built for high-performance spine, leaf, or border leaf roles in large-scale data center fabrics.

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