Arista DCS-7280DR3A-36-F | 7280R3A 36-Port 400G QSFP-DD Switch, Front-to-Rear, 2x AC

SKU:DCS-7280DR3A-36-F

Stock Status: Enquire

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router built for large-scale cloud, enterprise data centre and service provider networks. It provides 36 QSFP-DD ports running at up to 400G, along with deep packet buffers, and runs Arista EOS. It suits spine and leaf designs, Internet peering and border routing, carrier edge and data centre interconnect.

The 36 QSFP-DD ports can be broken out to as many as 144 x 100G, 232 x 50G or 25/10G interfaces. Two additional OSFP-LS ports support dense 400G-ZR deployment. Throughput is 14.4 Tbps (28.8 Tbps full duplex) at 5.4 Bpps, with a 16 GB packet buffer and latency from 3.8 us. An eight-core x86 CPU, 64 GB of system memory and a 480 GB SSD support the control plane. This standard model has no TunnelSec encryption, and is configured with front-to-rear airflow and two hot-swap AC power supplies in a 1+1 arrangement.

The switch accepts QSFP, OSFP and QSFP-DD optics from 10G to 400G, including 400G ZR and ZR+ coherent modules. It runs EOS 4.30.0 or later, uses Group 5 EOS fixed-switch feature licences and can be managed with CloudVision.

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

Features

- Ultra-deep packet buffers with Virtual Output Queues per port to avoid head-of-line blocking
- FlexRoute engine for Internet-scale routing, including border, peering and CDN backbone roles
- Synchronous Ethernet and IEEE 1588 PTP precision timing with OCXO and PPS/10M/ToD inputs
- 400G ZR and ZR+ support, with dedicated OSFP-LS ports for dense 400G DWDM
- EVPN-VXLAN, LANZ microburst detection, Zero Touch Provisioning and Accelerated sFlow
- Carrier-grade routing including LDP, RSVP-TE, SR-TE, FRR and TI-LFA
- Open programmable APIs (JSON-RPC, NETCONF) and a full Linux shell on Arista EOS
- Hot-swap redundant power supplies and 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 dense 400G-ZR
- Breakout options: up to 144 x 100G, 232 x 50G or 25/10G
- Maximum 40G ports using QSFP+: 36
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Packet forwarding rate: 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 ports: 1 x 100/1000, 1 x RS-232 serial (RJ-45), 1 x USB
- Encryption: none (standard model)
- Power supplies: 2 x hot-swap PWR-2411 AC (1+1 redundant), 2400 W output
- Fans: 4 x hot-swap FAN-7012H (N+1 redundant)
- Airflow: front to rear
- Typical/maximum power draw: 643 W / 1283 W
- Dimensions (W x H x D): 43.99 x 8.79 x 61.18 cm, 2RU
- Weight: 24.09 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.30.0

FAQs

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

Q: Which EOS licences does it use?
A: It runs Arista EOS and uses Group 5 EOS fixed-switch feature licences. Optional add-ons such as LIC-FIX-5-E for Enhanced L3, LIC-FIX-5-V for VXLAN and LIC-FIX-5-Z for ZTP, LANZ and API are sold separately.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-2411 AC supplies in a 1+1 arrangement, each rated at 2400 W output from a 200-240 VAC input. Typical draw is 643 W and maximum draw is 1283 W.

Q: Which optics does it support?
A: The ports accept QSFP, OSFP and QSFP-DD optics from 10G to 400G. 400G ZR and ZR+ coherent modules are supported on the OSFP-LS ports and the QSFP-DD ports.

Q: What airflow does this SKU have?
A: This SKU has front-to-rear airflow, with the four hot-swap fans in an N+1 arrangement. The matching spare fan module is FAN-7012H.