• Gray metal arista dcs-7280cr3am-32s-flx-r 30-port 100g switch with ventilation slots and multiple ports visible
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Arista

Arista DCS-7280CR3AM-32S-FLX-R | 7280R3A 30-Port 100G Switch, 2x 400G, MACsec, FLX

DCS-7280CR3AM-32S-FLX-R

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Description

The Arista DCS-7280CR3AM-32S-FLX-R is a high-performance data center switch designed for hyperscale cloud, spine-leaf architectures, and data center interconnect applications. Featuring 28 x 100GbE QSFP ports and 2 x 400GbE QSFP-DD uplinks, this 2RU switch delivers 3.6 Tbps throughput with ultra-low latency from 3.8 µs. Enhanced MACsec encryption protects all ports, while the FLX license enables advanced routing up to 2M routes, MPLS, VXLAN, and EVPN for demanding enterprise and service provider deployments.

Features

Arista EOS (Extensible Operating System) with Linux foundation and state-driven architecture
- Advanced Layer 3 routing: BGP, OSPF, IS-IS, PIM, VRRP with support for IPv4 and IPv6
- VXLAN routing and bridging with EVPN control plane for network virtualization
- MPLS LDP, RSVP-TE, Segment Routing (SR-MPLS), and LER/LSR functionality
- Enhanced MACsec with 256-bit AES-GCM encryption on all ports at line rate
- TunnelSec IPsec encryption for overlay tunnels from 10G to 400G
- Advanced timing support: IEEE 1588v2 PTP, SyncE with OCXO, PPS/10M/ToD inputs
- CloudVision integration for network-wide telemetry, automation, and configuration management
- 4 GB packet buffer memory for lossless operation and burst absorption
- Algorithmic ACLs (AlgoMatch) for flexible high-scale access control with pattern matching
- Hardware-accelerated sFlow on all interfaces at full forwarding capacity
- Virtual Output Queuing (VOQ) architecture for zero head-of-line blocking
- Multi-Chassis Link Aggregation (MLAG) for active-active layer 2 redundancy
- VLAN support for up to 4096 VLANs with Q-in-Q (802.1ad)
- Comprehensive QoS with 8 priority queues per port, WRED, and traffic shaping
- ZTP (Zero Touch Provisioning) for automated deployment
- LANZ (Latency Analyzer) for real-time congestion visibility
- TapAgg for network monitoring and inline tool deployment
- Dual redundant hot-swappable power supplies and fan trays
- REST API, eAPI, Python, OpenConfig, gNMI for programmability and SDN integration

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: 30 x QSFP100/200 (28 x 100GbE + 2 x 400GbE QSFP-DD)
- Switching Capacity: 3.6 Tbps full duplex (7.2 Tbps bidirectional)
- Forwarding Rate: 1.35 Bpps (billion packets per second)
- Latency: From 3.8 µs
- CPU: Eight-Core x86 processor
- Memory: 64 GB system memory, 4 GB packet buffer memory
- Encryption: Enhanced MACsec on all ports (256-bit AES-GCM)
- Routing Capacity: Over 256K routes (FLX license supports up to 2M routes)
- Form Factor: 2RU rack-mountable (19-inch)
- Dimensions (WxHxD): 17.3 x 3.46 x 24.09 inches (43.99 x 8.79 x 61.18 cm)
- Weight: 53.1 lbs (24.09 kg)
- Power Consumption: 643W typical / 1283W maximum
- Power Supplies: 2 x PWR-2411 AC (redundant, rear-to-front airflow)
- Operating System: Arista EOS (minimum 4.30.0)
- Management: CLI, REST API, CloudVision, eAPI, SNMP, NETCONF
- Certifications: NEBS Level 3, FCC Class A, CE, RCM

FAQs

Q: What is the FLX license and what features does it enable?
A: The FLX license provides full routing capabilities up to 2M routes, advanced MPLS LER/LSR functionality with traffic engineering and link/node protection, EVPN, VXLAN with Segment Routing, and over 24K ACL entries. This makes it ideal for large-scale data center, internet peering, and carrier-grade deployments requiring extensive routing tables and advanced MPLS features.

Q: What encryption capabilities does the 7280CR3AM-32S-FLX-R support?
A: The switch features Enhanced MACsec encryption on all ports supporting 256-bit AES-GCM encryption at wire speed from 10G to 400G without performance penalty. It also supports TunnelSec for encrypted overlay tunnels, eliminating the need for external encryption appliances while providing significantly lower latency and higher throughput.

Q: Can this switch support 400G ZR coherent optics?
A: Yes, the 7280R3A platform is optimized to support high-power 400ZR OSFP and QSFP-DD coherent optical modules. These software-tunable DWDM modules support reaches up to 120km and can be combined with Arista's ZR Line System to multiplex up to 8 x 400ZR modules for 3.2 Tbps transport over a single fiber pair.

Q: What deployment scenarios is this switch best suited for?
A: The DCS-7280CR3AM-32S-FLX-R is ideal for high-density spine switches in leaf-spine architectures, data center interconnect with encryption requirements, internet peering routers with large routing tables, and cloud provider edge routing. The deep packet buffers, large routing capacity, and MACsec encryption make it particularly suitable for secure multi-tenant environments and service provider networks.

Q: What is the significance of the 'R' designation in the model number?
A: The 'R' suffix indicates rear-to-front airflow direction, where air flows from the fan side to the switch port side. This airflow configuration is designed for hot aisle/cold aisle data center layouts where cold air intake is at the rear and hot air exhaust is at the front. The switch includes 2 x AC power supplies with matching airflow direction for optimal cooling efficiency.

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