Arista DCS-7280CR3A-32S-R | 7280R3A 32-Port 100G Switch, 2x 400G, Rear-to-Front

SKU:DCS-7280CR3A-32S-R

Stock Status: Enquire

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Description

The Arista 7280R3A is a fixed 1RU data centre switch router built for large-scale layer 2 and layer 3 cloud data centres, enterprise data centres and service provider networks. It suits Internet border and peering roles, data centre interconnect, spine and leaf designs with EVPN-VXLAN, and lossless deep-buffer workloads.

This 7280CR3A-32S model provides 30 x QSFP100/200 ports plus 2 x QSFP200/QSFP-DD ports for 400G, and supports breakouts up to 56 x 25/10G or 56 x 50G interfaces. It delivers 3.6 Tbps of throughput (7.2 Tbps full duplex) at 1.35 Bpps, with a 4 GB packet buffer and latency from 3.8 us. Power comes from 2 x hot-swap 1500 W AC power supplies in a 1+1 arrangement, with 3 hot-swap fans and rear-to-front airflow. This is the standard model without encryption, running Arista EOS in Feature License Group 3.

The QSFP-DD ports accept 400G optics and cables including 400GBASE-DR4, FR4, LR4 and ZR, and the 100G ports support 100GBASE-SR4, LR4 and related optics.

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

Features

- Deep packet buffers with Virtual Output Queues per port to avoid head-of-line blocking
- FlexRoute engine for Internet-scale routing tables in hardware
- EVPN-VXLAN, VXLAN bridging and routing, MLAG, BGP, OSPF and IS-IS
- LANZ microburst detection, Accelerated sFlow and Zero Touch Provisioning
- Precision timing with PTP and SyncE
- Support for 400G ZR and ZR+ optics and DWDM-ready design
- Arista EOS with a single 64-bit image, Linux shell access and programmable APIs
- CloudVision integration for network-wide management

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: 30 x QSFP100/200, 2 x QSFP200/QSFP-DD
- Maximum 400G ports: 2
- Maximum 200G ports: 18
- Maximum 100G ports: 36
- Maximum 50G ports: 56
- Maximum 25/10G ports: 56
- Throughput: 3.6 Tbps (7.2 Tbps full duplex)
- Packets per second: 1.35 Bpps
- Latency: from 3.8 us
- Packet buffer: 4 GB
- CPU: Eight-core x86
- System memory: 64 GB
- SSD storage: 120 GB
- Management port: 1 x 100/1000
- Serial console: 1 x RS-232 (RJ-45)
- USB ports: 1
- Power supplies: 2 x hot-swap AC, 1+1 redundant
- PSU input: 200-240 VAC, 50/60 Hz, 1500 W output
- Fans: 3 x hot-swap, N+1 redundant
- Airflow: Rear to front
- Typical / maximum power draw: 302 W / 481 W
- Form factor: 1RU
- Dimensions (W x H x D): 43.99 x 4.37 x 56.57 cm
- Weight: 12.81 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.32.1

FAQs

Q: Does this switch need a separate software licence?
A: It runs Arista EOS and belongs to EOS Feature License Group 3. This is the standard R3A model without encryption.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-1512-AC 1500 W power supplies (200-240 VAC, 50/60 Hz) in a 1+1 redundant arrangement. Typical draw is 302 W and maximum draw is 481 W.

Q: Which optics work in the 400G ports?
A: The 2 x QSFP-DD ports support 400G optics and cables including 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR, and 200G, 100G, 50G and 25G breakouts.

Q: What airflow direction does this SKU have?
A: This -R model has rear-to-front airflow, with the fan tray drawing air from the rear of the chassis towards the front.

Q: How does it differ from the R3AM and R3AK variants?
A: This standard 7280CR3A-32S has no encryption. TunnelSec-class encryption is a licensed feature on the 7280CR3AM and 7280CR3AK variants.