• Stack of white arista dcs-7280cr3-36s-f 36-port 100g switch server racks with ventilation slots and front panel indicators
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Arista

Arista DCS-7280CR3-36S-F | 7280R3 36-Port 100G Switch, 2x 400G, 2.4 Tbps

DCS-7280CR3-36S-F

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Description

The Arista DCS-7280CR3-36S-F is a 1RU data center switch router designed for high-performance cloud, content delivery, and service provider environments. With 36 x 100GbE QSFP ports and 2 x 400G QSFP-DD uplinks, it delivers 2.4 Tbps of non-blocking throughput with 4GB deep packet buffer and 3.8µs ultra-low latency. Supporting flexible breakout configurations from 1G to 400G, this front-to-rear airflow switch is ideal for spine, leaf, Internet peering, and DCI deployments requiring predictable lossless performance.

Features

Arista EOS modular operating system with in-service software updates
- FlexRoute engine supporting Internet-scale routing tables
- Virtual Output Queue (VOQ) architecture eliminates head-of-line blocking
- Deep packet buffers (4GB) for lossless forwarding and congestion management
- Multi-Chassis Link Aggregation (MLAG) for active-active Layer 2 topologies
- ECMP (Equal Cost Multi-Path) with up to 512-way load balancing
- VXLAN hardware VTEP for overlay network virtualization
- EVPN (Ethernet VPN) for Layer 2 and Layer 3 services over IP/MPLS
- Segment Routing Traffic Engineering (SR-TE) for path optimization
- Accelerated sFlow with hardware-based sampling at 1:500 rates
- Latency Analyzer (LANZ) for microsecond-level congestion monitoring
- Precision Time Protocol (PTP) IEEE 1588v2 and Synchronous Ethernet
- Algorithmic ACLs supporting 100K+ rules with flexible pattern matching
- CloudVision integration for network-wide telemetry and automation
- Zero Touch Provisioning (ZTP) for automated deployment
- Stateful Fault Repair (SFR) and self-healing software architecture
- Smart System Upgrade (SSU) and Accelerated Software Update (ASU)
- JSON-RPC and RESTful APIs for programmability and DevOps integration
- Comprehensive Layer 2 features: VLANs, STP/RSTP/MSTP, LACP, LLDP
- Advanced QoS with 8 egress queues and flexible scheduling algorithms

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

36 x 100GbE QSFP ports supporting flexible 1G/10G/25G/40G/50G/100G/200G/400G breakout capability
- 2 x 400GbE QSFP-DD uplinks with flexible speed support
- Switching capacity: 2.4 Tbps throughput, 1 Bpps forwarding rate
- 4GB deep packet buffer with Virtual Output Queues (VOQ) architecture
- Ultra-low latency: 3.8µs store-and-forward latency
- Jericho2C chipset with up to 120 logical interfaces in breakout mode
- Form factor: 1RU fixed configuration
- Airflow: Front-to-rear (port side to fan side)
- Dual redundant hot-swappable AC power supplies
- Hot-swappable N+1 redundant fans
- Memory: System buffer 4GB, supports standard forwarding profiles
- MAC address table: Up to 768K entries (profile dependent)
- Management: CLI, web GUI, SNMP, JSON-RPC, NETCONF, CloudVision integration
- Operating temperature: 0°C to 45°C (varies by optics and airflow)
- Power consumption: Varies by configuration and optic loading
- Compliance: RoHS, CE, FCC, UL, cUL, CCC, KC

FAQs

Q: What interface speeds does the DCS-7280CR3-36S-F support?
A: The switch supports flexible breakout configurations on its 36 QSFP ports, including 1G, 10G, 25G, 40G, 50G, 100G, and 200G. The 2 QSFP-DD ports support 100G, 200G, and 400G. Ports can be configured individually based on transceiver type and EOS software support.

Q: What is the difference between CR3 and CR3K models?
A: The CR3 models support standard routing tables suitable for most data center applications. The CR3K variants include enhanced FlexRoute capabilities supporting up to 5M IPv4 routes, 5M IPv6 routes, and larger forwarding tables ideal for Internet peering and service provider edge deployments.

Q: Is this switch suitable for lossless Ethernet deployments?
A: Yes, the 7280CR3-36S-F features 4GB deep packet buffers with Virtual Output Queue (VOQ) architecture, making it ideal for lossless forwarding applications such as IP storage, data analytics, high-frequency trading, and content delivery networks where packet loss is unacceptable.

Q: What routing protocols are supported?
A: Arista EOS on the 7280R3 Series supports comprehensive Layer 2 and Layer 3 protocols including VLAN, MLAG, BGP, OSPF, IS-IS, MPLS (LDP, RSVP-TE, SR-TE), EVPN, VXLAN, and up to 512-way ECMP for scalable modern data center architectures.

Q: Does this model support MACsec encryption?
A: No, the standard DCS-7280CR3-36S-F does not support MACsec encryption. For encryption requirements, consider the 7280CR3M or 7280CR3MK variants which offer wire-speed AES-256-GCM encryption with MACsec, IPsec, and VXLANsec capabilities.

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