Arista DCS-7280CR3K-36A-R | 7280R3 36-Port 100G Switch, 2x 400G, Large Routes, 2x AC

SKU:DCS-7280CR3K-36A-R

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Description

The Arista 7280R3 is a 1RU fixed data centre switch router built for cloud, content delivery, service provider, IP storage and data centre interconnect networks. It suits leaf/spine designs, internet peering and large-scale Layer 2 and Layer 3 cloud fabrics, and runs Arista EOS.

This 7280CR3K-36A variant provides 28 QSFP100 ports and 2 QSFP-DD ports for 400G, with up to 36 ports usable at 40G through QSFP+. The 100G ports also support 25G and 50G interface speeds. Throughput is 2.4 (4.8) Tbps full duplex at 1 Bpps. The K designation adds the large-routes FlexRoute table, supporting over 5M IPv4 and IPv6 routes, alongside deep packet buffers. This SKU uses rear-to-front airflow and 2 x AC power supplies, with typical power draw of 262 W and a maximum of 437 W.

The chassis supports PWR-1011-AC and PWR-1011-DC power supplies. The QSFP100 ports accept 100G, 50G, 25G and 40G optics and breakout, and the QSFP-DD ports take 400G modules.

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

Features

- Deep packet buffers and large routing tables for internet peering, interconnect and inter-DC networking
- FlexRoute large-routes table supporting over 5M IPv4/v6 routes
- 100G QSFP ports support 25G and 50G interface speeds as well as 100G
- Accelerated sFlow on all models
- Runs the same Arista EOS binary image as all Arista products, with an extensible bash, python and C++ platform
- Suited to large-scale Layer 2 and Layer 3 cloud designs and overlay networks
- Two QSFP-DD ports for 400G connectivity

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

- Ordering description: Arista 7280R3, 36x100GbE QSFP/2x400G switch router, large routes, rear to front air, 2 x AC
- Ports: 28 x QSFP100, 2 x QSFP-DD
- Max 40G ports (using QSFP+): 36
- Throughput (FDX): 2.4 (4.8) Tbps
- Packets per second: 1 Bpps
- Route scale: over 5M IPv4/v6 routes with FlexRoute (large routes)
- Rack units: 1 RU
- Airflow: Rear to front
- Power supplies: 2 x AC
- Supported power supplies: PWR-1011-AC, PWR-1011-DC
- AC input (PWR-1011-AC): 100-120 / 200-240 VAC, 12 / 6 A, 50/60 Hz
- Power draw (typical / maximum): 262 W / 437 W
- Dimensions (W x H x D): 48.3 x 4.4 x 47.2 cm (19 x 1.75 x 18.6 in)
- Weight: 10.5 kg (23.0 lbs)
- Operating system: Arista EOS

FAQs

Q: What does the K in 7280CR3K mean?
A: The K designation indicates the large-routes variant, which uses FlexRoute to support over 5M IPv4 and IPv6 routes. This suits internet peering and large routing table deployments.

Q: What power supplies does this switch use?
A: This SKU uses 2 x AC power supplies. The 7280CR3K-36A supports PWR-1011-AC and PWR-1011-DC power supplies, with typical draw of 262 W and a maximum of 437 W.

Q: Which airflow direction does this SKU use?
A: The -R suffix denotes rear-to-front airflow. Match it to your rack's hot and cold aisle layout before installation.

Q: Can the 100G ports run at lower speeds?
A: Yes. The 100G QSFP ports support 25G and 50G interface speeds as well as 100G, and up to 36 ports can run at 40G using QSFP+.

Q: What operating system does it run?
A: It runs Arista EOS, the same binary image used across all Arista products, with an extensible bash, python and C++ platform.