Arista DCS-7280DR3A-36-DC-F | 7280R3A 36x400G QSFP-DD Switch, DC Power, Front-to-Rear

SKU:DCS-7280DR3A-36-DC-F

Stock Status: Enquire

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Description

The Arista 7280R3A is a 2RU fixed-configuration 400G switch router built for data centre spine and leaf, carrier edge, metro transport and data centre interconnect. This DC-powered standard-scale variant suits NEBS-style deployments where -48 to -60 VDC feeds are the norm.

It provides 36 QSFP-DD 400GbE ports plus 2 OSFP-LS ports for 400G-ZR DWDM links, with up to 144 x 100G or 232 x 25/10G interfaces via breakout and 40G supported using QSFP+. Throughput is 14.4 Tbps (28.8 Tbps full duplex) at 5.4 Bpps, with latency from 3.8 us and 16 GB of deep packet buffer. Power comes from two hot-swap PWR-2411 DC supplies in a 1+1 arrangement, with four N+1 hot-swap fans moving air front to rear. Typical draw is 643 W and maximum draw is 1283 W.

The switch runs Arista EOS with CloudVision management and falls under EOS Feature License Group 5, with a minimum of EOS 4.30.0. This standard model does not include TunnelSec encryption, which is only on the 7280DR3AM and 7280DR3AK models.

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

Features

- Wire-speed 400G performance with 16 GB buffers and Virtual Output Queues to avoid head-of-line blocking
- Runs Arista EOS with CloudVision, ZTP, LANZ microburst detection, Accelerated sFlow and open APIs including JSON-RPC and NETCONF
- EVPN-VXLAN, MLAG and 512-way ECMP for scalable data centre fabrics
- MPLS with LDP, RSVP-TE and SR-TE, plus TI-LFA and fast reroute for carrier and edge use
- FlexRoute supports large IPv4 and IPv6 routing tables
- PTP and SyncE precision timing with OCXO
- 2 x OSFP-LS ports for dense 400G-ZR DWDM deployments
- Hot-swap 1+1 DC power and N+1 fans, 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: 36 x 400GbE QSFP-DD
- Additional ports: 2 x OSFP-LS for 400G-ZR
- Maximum 100G ports: 144
- Maximum 50G ports: 232
- Maximum 25/10G ports: 232
- Maximum 40G ports (using QSFP+): 36
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Packets per second: 5.4 Bpps
- Latency: from 3.8 us
- Packet buffer: 16 GB
- CPU: eight-core x86
- System memory: 64 GB
- SSD storage: 480 GB
- Management: 1 x 100/1000 port, 1 x RJ-45 RS-232 serial, 1 x USB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Power supplies: 2 x PWR-2411 DC hot-swap (1+1), -48 to -60 VDC input, 2400 W output
- Power draw: 643 W typical, 1283 W maximum (excluding transceivers)
- Cooling: 4 x hot-swap fans (N+1), FAN-7012H, front-to-rear airflow
- Form factor: 2RU, 17.3 x 3.46 x 24.09 in (43.99 x 8.79 x 61.18 cm)
- Weight: 24.09 kg (53.1 lbs)
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.30.0

FAQs

Q: What power input does this switch use?
A: It uses two hot-swap PWR-2411 DC power supplies in a 1+1 arrangement, accepting -48 to -60 VDC. Each supply delivers 2400 W output and takes up to 55 A at -48 V with an AWG #6 maximum input connector.

Q: Does it include TunnelSec encryption?
A: No. This is the standard 7280DR3A-36 model without encryption. TunnelSec is only available on the 7280DR3AM and 7280DR3AK models.

Q: What airflow direction does this model have?
A: Airflow is front to rear, supplied by four hot-swap N+1 fans (FAN-7012H). Check the airflow direction matches your rack cooling layout before ordering.

Q: Which optics and breakout options does it support?
A: The 36 QSFP-DD ports carry 400G and break out to 100G, 50G, 25G or 10G, and 40G is supported using QSFP+. The 2 OSFP-LS ports are intended for 400G-ZR.

Q: Which EOS release and licence group applies?
A: It runs Arista EOS, falls under EOS Feature License Group 5 and requires EOS 4.30.0 or later.