Arista DCS-7280CR3A-72-F | 7280R3A 72-Port 100G Switch, Front-to-Rear, 2x AC

SKU:DCS-7280CR3A-72-F

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Description

The 7280CR3A-72 is a 2RU fixed data centre switch router from the Arista 7280R3A series. It suits large-scale layer 2 and layer 3 cloud designs, enterprise data centres, service provider networks, secure internet peering and carrier edge, core or spine and aggregation roles that need deep buffers and large routing tables.

It provides 72 QSFP100 ports with 7.2 Tbps of throughput (14.4 Tbps full duplex) and 2.7 Bpps of forwarding, with latency from 3.8 us and an 8 GB packet buffer. The ports support up to 72 x 100G, 72 x 40G via QSFP+, or breakout to 50G, 25G and 10G, for a maximum of 116 interfaces. This SKU has front-to-rear airflow and two hot-swap AC power supplies in a 1+1 arrangement, with four hot-swap fans in an N+1 arrangement. It is the standard R3A model without MACsec or TunnelSec encryption.

The switch runs Arista EOS, with a minimum release of 4.31.2 and EOS Feature Licences Group 4 listed. The fan tray is FAN-7012H and supported power supplies are PWR-1513-AC, PWR-1512-AC or PWR-1511-DC. It accepts 10G to 400G pluggable optics and cables, including 100GBASE-LR4, CWDM4, FR, DR, PSM4 and AOC types.

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

Features

- Runs Arista EOS with a single 64-bit binary image and full Linux shell access
- Deep packet buffers with Virtual Output Queues per port to avoid head-of-line blocking
- Cloud-grade routing including EVPN-VXLAN, MPLS (LDP, RSVP-TE, SR-TE), FRR and TI-LFA
- Precision timing with PTP and Synchronous Ethernet
- LANZ microburst detection and Accelerated sFlow
- Zero Touch Provisioning, CloudVision integration, JSON-RPC and NETCONF APIs
- Stateful Fault Repair and live software patching
- Designed for NEBS environments

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

- Ports: 72 x QSFP100
- Throughput: 7.2 Tbps (14.4 Tbps full duplex)
- Packets per second: 2.7 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 8 GB
- System memory: 64 GB
- SSD storage: 120 GB
- CPU: eight-core x86
- Maximum 400G ports: 1
- Maximum 100G ports: 72
- Maximum 50G-2 ports: 102
- Maximum 40G ports (using QSFP+): 72
- Maximum 25/10G ports: 102
- Maximum total interfaces: 116
- Power supplies: 2 x hot-swap AC (1+1 redundant)
- Fans: 4 x hot-swap (N+1 redundant), tray FAN-7012H
- Airflow: front to rear
- Typical / maximum power draw: 406 W / 754 W (excludes transceivers)
- Rack units: 2 U
- Dimensions (W x H x D): 43.99 x 8.79 x 68.69 cm including handles
- Weight: 22.41 kg
- Management: 1 x 100/1000 port, 1 x RJ-45 RS-232 serial, 1 x USB
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.2

FAQs

Q: Which EOS release does this switch need?
A: It runs Arista EOS with a minimum release of 4.31.2. The datasheet lists EOS Feature Licences Group 4 for this model.

Q: What power supplies does the DCS-7280CR3A-72-F use?
A: It uses two hot-swap AC power supplies in a 1+1 redundant arrangement. Supported units are PWR-1513-AC, PWR-1512-AC and PWR-1511-DC, with the AC units rated at 1500 W output on 200-240 VAC.

Q: Which optics and cables work in the QSFP100 ports?
A: The ports accept 100G modules such as 100GBASE-LR4, LRL4, CWDM4, FR, DR, PSM4, ERL4 and AOC, plus 40G via QSFP+ and breakout to 50G, 25G or 10G. Check the Arista transceiver datasheet and EOS release notes for specific module support.

Q: Does this model support MACsec or TunnelSec encryption?
A: No. This is the standard R3A model without encryption. MACsec and TunnelSec are available only on the M and K models.

Q: How does this SKU differ from other 7280CR3A-72 variants?
A: The -F suffix denotes front-to-rear airflow with two AC power supplies and no encryption. Other variants differ in airflow direction, power type or encryption support.