Arista DCS-7280CR3AK-72-FLX-R | 7280R3A 72-Port 100G QSFP Switch, TunnelSec, FLX-Lite

SKU:DCS-7280CR3AK-72-FLX-R

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Description

The Arista 7280R3A series is a 2RU fixed data centre switch router built on Arista EOS. This 7280CR3AK-72 model is aimed at leaf and spine roles in large data centres and cloud networks, as well as service-provider and DCI/WAN edge deployments that need full internet routing tables, high 100G density and optional wire-speed encryption.

It provides 72 x 100G QSFP100 ports, with breakout options of up to 102 x 25/10G or 102 x 50G. Throughput is 7.2 Tbps (14.4 Tbps full duplex) with a 2.7 Bpps forwarding rate, latency from 3.8 us and an 8 GB packet buffer. The K model adds large route scale, algorithmic ACLs for 400K+ rules and TunnelSec encryption on all ports. This SKU has rear-to-front airflow, two hot-swap AC power supplies in 1+1 redundancy and four hot-swap fans, and includes the FLX-Lite licence for full routing up to 256K routes, EVPN, VXLAN, SR and base MPLS LSR.

The 100G ports also accept 40G QSFP+ optics, subject to transceiver and cable capability. The switch requires EOS 4.31.2 or later and is managed through Arista CloudVision.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- Arista EOS with a single 64-bit binary image, stateful fault repair and live software patching
- TunnelSec wire-speed encryption (MACsec, IPsec) on all ports
- Over 5M IPv4 routes and up to 384K MAC addresses with 7280R3AK profiles
- Algorithmic ACLs for 400K+ rules
- EVPN-VXLAN, LANZ microburst detection, ZTP, CloudVision integration and Accelerated sFlow
- Virtual output queues per port to eliminate head-of-line blocking
- Inband Network Telemetry support on 7280R3AK
- Redundant hot-swap power supplies over 94% efficient, hot-swap fans, designed for NEBS

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

- Model: 7280CR3AK-72
- Ports: 72 x QSFP100
- Breakout: up to 102 x 25/10G or 102 x 50G
- Max 100G ports: 72
- Max 40G ports (using QSFP+): 72
- Max total interfaces: 116
- Throughput (FDX): 7.2 (14.4) Tbps
- Packets per second: 2.7 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 8 GB
- CPU: eight-core x86
- System memory: 64 GB
- SSD storage: 120 GB
- Encryption: all ports (TunnelSec/MACsec)
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management port: 1 x 100/1000
- Serial port: 1 x RS-232 (RJ-45)
- USB ports: 1
- Hot-swap power supplies: 2 (1+1 redundant)
- Power supply options: PWR-1513-AC, PWR-1512-AC or PWR-1511-DC
- Hot-swap fans: 4 (N+1 redundant), fan tray FAN-7012H
- Typical/max power draw: 406 W / 754 W (excludes transceivers)
- Airflow: rear-to-front
- Rack units: 2U
- Dimensions (W x H x D): 43.99 x 8.79 x 68.69 cm
- Weight: 22.41 kg
- Minimum EOS: 4.31.2
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m

FAQs

Q: Which licence does this SKU include?
A: The -FLX suffix indicates the FLX-Lite licence (LIC-FIX-4-FLX-L). It provides full routing up to 256K routes, EVPN, VXLAN, SR and base MPLS LSR without TE or link/node protection. The full FLX licence (LIC-FIX-4-FLX) is the upgrade, supporting up to 2M routes and advanced MPLS.

Q: What power supplies does it use?
A: It takes two hot-swap supplies in 1+1 redundancy, with PWR-1513-AC, PWR-1512-AC or PWR-1511-DC options. The 1500 W AC units run from 200-240 VAC at 50/60 Hz via IEC 60320 C14. Typical draw is 406 W and maximum is 754 W, excluding transceivers.

Q: Can the 100G ports run at lower speeds?
A: Yes. The QSFP100 ports accept 100G QSFP and 40G QSFP+ optics, and support breakout to 25/10G and 50G, subject to transceiver and cable capability. The switch supports up to 102 x 25/10G or 102 x 50G ports in total.

Q: What does the K model add over the standard 7280R3A?
A: The 7280R3AK variant adds large route scale, algorithmic ACLs for 400K+ rules and TunnelSec encryption (MACsec and IPsec) on all ports. It also supports Inband Network Telemetry.

Q: What software version does it require?
A: It requires Arista EOS 4.31.2 or later. The switch can be managed through Arista CloudVision and supports ZTP for automated provisioning.