Arista DCS-7280DR3AM-36-F | 7280R3A 36-Port 400G QSFP-DD Switch, TunnelSec, 2x AC

SKU:DCS-7280DR3AM-36-F

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router with 36 x 400GbE QSFP-DD ports and wire-speed TunnelSec encryption (MACsec, IPsec and VXLANsec) on all ports. It suits large-scale cloud, service provider and enterprise data centre deployments, as well as WAN edge, secure internet peering, carrier edge VPN services and encrypted data centre interconnect links.

This R3AM variant provides 14.4 (28.8) Tbps of throughput and 5.4 Bpps, with latency from 3.8 us and a 16 GB packet buffer. The 36 QSFP-DD ports break out to up to 144 x 100G or up to 232 x 50G, 25G or 10G interfaces, and two OSFP-LS line system ports support 400G ZR/ZR+ DWDM optics. Power comes from two hot-swap 2400 W AC supplies in a 1+1 arrangement, with four N+1 hot-swap fans and front-to-rear airflow. Typical draw is 643 W, rising to a maximum of 1283 W excluding transceivers.

The switch runs Arista EOS 4.30.0 or later, with Group 5 feature licences. PTP and SyncE precision timing is built in, with OCXO and PPS/10M/ToD inputs.

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

Features

- TunnelSec wire-speed AES-256-GCM encryption with MACsec, IPsec and VXLANsec on all interface speeds from 10G to 400G
- Deep packet buffers with Virtual Output Queue architecture to avoid head-of-line blocking
- FlexRoute Engine holds a full internet routing table in hardware
- Dedicated OSFP-LS ports for 400G ZR/ZR+ DWDM optics
- Up to 512-way ECMP, MLAG and EVPN/VXLAN support
- PTP and SyncE precision timing
- Accelerated sFlow, DANZ and INT telemetry
- Hot-swappable redundant power supplies and fans
- Arista EOS with open programmable APIs including JSON-RPC and NETCONF

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
- Breakout: up to 144 x 100G, 232 x 50G or 232 x 25/10G
- 40G support: up to 36 ports using QSFP+
- Line system ports: 2 x OSFP-LS for 400G ZR/ZR+ DWDM
- Encryption: TunnelSec (MACsec, IPsec, VXLANsec) on all ports
- Throughput (FDX): 14.4 (28.8) Tbps
- Forwarding rate: 5.4 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 16 GB
- CPU: eight-core x86
- System memory: 64 GB
- SSD storage: 480 GB
- Management: 1 x 100/1000 port, 1 x RS-232 RJ-45 serial, 1 x USB
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Power supplies: 2 x PWR-2411 hot-swap AC, 1+1 redundant, 2400 W output each
- AC input: 200-240 VAC, 50/60 Hz, 14 A max, IEC 60320 C20
- Power draw: 643 W typical, 1283 W maximum (excluding transceivers)
- Fans: 4 x FAN-7012H hot-swap, N+1 redundant
- Airflow: front to rear
- Form factor: 2RU
- Dimensions (WxHxD) including handles: 43.99 x 8.79 x 61.18 cm
- Weight: 24.09 kg
- Minimum EOS: 4.30.0
- Operating temperature: 0 to 40 C
- Operating altitude: 0 to 3,000 m

FAQs

Q: Which licences does this switch need?
A: It runs Arista EOS 4.30.0 or later, with Group 5 feature licences (LIC-FIX-5-) covering options such as Enhanced L3, Virtualization and Monitoring & Automation. Encryption is a licensed feature, enabled with LIC-FIX-5-MACSEC for MACsec only or LIC-FIX-5-ENCR for TunnelSec, IPsec and MACsec.

Q: What power supplies does it use?
A: It uses two hot-swap PWR-2411 AC supplies in a 1+1 redundant arrangement. Each accepts 200-240 VAC at 50/60 Hz and delivers 2400 W, with an IEC 60320 C20 inlet. Typical system draw is 643 W and maximum is 1283 W, excluding transceivers.

Q: Which optics and speeds do the QSFP-DD ports support?
A: The QSFP-DD ports accept 400G optics and 100G optics, with breakout to 50G, 25G and 10G. They also support 40G using QSFP+. Two dedicated OSFP-LS ports take 400G ZR/ZR+ DWDM modules.

Q: What is the airflow direction?
A: This SKU has front-to-rear airflow, with four hot-swap FAN-7012H fans in an N+1 arrangement. Confirm it matches your rack cooling layout before ordering.

Q: How does this model differ from other 7280R3A variants?
A: This R3AM variant adds TunnelSec encryption on all ports, uses front-to-rear airflow and has two AC power supplies.