Arista DCS-7280CR3-36S-R | 7280R3 36-Port 100G Switch, Rear-to-Front, 2x AC PSU

SKU:DCS-7280CR3-36S-R

Stock Status: Enquire

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Description

The Arista 7280R3 is a 1RU fixed data centre switch router built for cloud-scale routing, internet peering and leaf/spine roles. It suits deep-buffer environments, carrier edge VPN and EVPN services, and 5G or metro transport. Rear-to-front airflow lets it match hot-aisle and cold-aisle layouts where the ports sit on the hot side of the rack.

The 36 QSFP ports are made up of 28 x QSFP100, 6 x QSFP200 and 2 x QSFP-DD, giving up to 2 x 400G, 40 x 100G, 80 x 50G or 120 x 25/10G interfaces with breakout cabling. Throughput is 2.4 Tbps (4.8 Tbps full duplex) at 1 Bpps, with latency from 3.8 us and a 4 GB packet buffer. A quad-core x86 CPU with 64 GB of system memory and 8 GB of flash runs Arista EOS. This SKU has two hot-swap AC power supplies (1+1 redundant) with a typical draw of 254 W and a maximum of 423 W, plus two hot-swap fans.

It works with QSFP28 100G, QSFP56 200G and QSFP-DD 400G optics and cables, as well as 40G QSFP+ and breakout cabling. Rear-to-front airflow uses the FAN-7011H-R fan tray, requires EOS 4.29.1 or later, and has a 35 C maximum ambient. The switch can be managed through Arista CloudVision.

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

Features

- Wire-speed Layer 2 and Layer 3 forwarding with deep buffers and Virtual Output Queues to avoid head-of-line blocking
- Runs Arista EOS from a single binary image, with Linux shell access and bash, Python and C++ extensibility
- Cloud-grade routing including internet peering, EVPN/VXLAN, segment routing, MPLS and PTP/SyncE timing
- LANZ microburst detection, accelerated sFlow, Zero Touch Provisioning and CloudVision management
- Open APIs (JSON-RPC and NETCONF) for provisioning and telemetry
- Redundant hot-swap power supplies and fans, designed for NEBS environments
- Flexible port speeds from 1G through to 400G with breakout support

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: 28 x QSFP100, 6 x QSFP200, 2 x QSFP-DD
- Maximum 400G ports: 2
- Maximum 100G ports: 40
- Maximum 50G ports: 80
- Maximum 40G ports (using QSFP+): 36
- Maximum 25/10G ports: 120
- Maximum 1G ports: 24
- Throughput: 2.4 Tbps (4.8 Tbps full duplex)
- Packets per second: 1 Bpps
- Latency: from 3.8 us
- CPU: quad-core x86
- System memory: 64 GB
- Packet buffer memory: 4 GB
- Flash storage: 8 GB
- Management: 1 x 100/1000 port, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap AC, 1+1 redundant, 1000W, 100-240V AC input, IEC 60320 C14
- Fans: 2 x hot-swappable, 1+1 redundant
- Airflow: rear to front
- Typical / maximum power draw: 254 W / 423 W
- Dimensions (W x H x D): 43.99 x 4.37 x 47.17 cm
- Weight: 10.47 kg
- Rack units: 1 RU
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.26.1

FAQs

Q: Which EOS feature licence group does this switch fall into?
A: The 7280CR3-36S sits in EOS Feature Licence Group 3. Optional LIC-FIX-3 licences such as Enhanced L3, Virtualization, Monitoring and Automation, FLX-Lite and FLX can be added for extended features.

Q: What airflow does this model use?
A: This SKU uses rear-to-front airflow. That direction requires the FAN-7011H-R high-speed fan tray, EOS 4.29.1 or later and a maximum ambient of 35 C.

Q: What power supplies does it use and what is the power draw?
A: It has two hot-swap AC power supplies (PWR-1011, 1000W, 100-240V AC input) in a 1+1 redundant arrangement. Typical draw is 254 W and maximum is 423 W.

Q: Which optics and cables does it support?
A: It supports QSFP28 100G, QSFP56 200G and QSFP-DD 400G optics and cables, as well as 40G QSFP+ and breakout cabling. The Arista datasheet lists the specific optics.

Q: Does it support MACsec?
A: No. MACsec is only available on the M and K models in the 7280R3 family, not on this base model.