Arista DCS-7280DR3AK-36-F | 7280R3A 36-Port 400G Switch, TunnelSec, Large Routes

SKU:DCS-7280DR3AK-36-F

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Description

The Arista 7280R3A R3AK is a fixed 2RU data centre switch router built for large-scale spine and leaf fabrics, service provider networks, Internet peering and carrier edge VPN services. The R3AK variant adds large-route scale and TunnelSec wire-speed encryption, making it suited to secure 400G encrypted interconnects and EVPN services for 5G/MEC, CIN and metro networks.

This SKU provides 36 x 400GbE QSFP-DD ports with 14.4 Tbps throughput (28.8 Tbps full duplex) and 5.4 Bpps forwarding, with latency from 3.8 us. A 16 GB packet buffer with Virtual Output Queues per port helps avoid head-of-line blocking. The large-route R3AK hardware supports over 5M IPv4 routes, and TunnelSec delivers MACsec, IPsec and VXLANsec encryption on all ports. Two OSFP-LS line system ports support 400G ZR/ZR+ deployments. Cooling is front-to-rear, with two AC power supplies in 1+1 redundancy and four hot-swap fans in N+1 redundancy.

The ports accept QSFP-DD, QSFP100 and QSFP+ optics and DACs, with breakout to 100G, 50G, 40G and 25/10G for up to 232 interfaces. It runs Arista EOS 4.30.0 or later.

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

Features

- Ultra-deep packet buffer with Virtual Output Queues per port to avoid head-of-line blocking
- TunnelSec wire-speed AES-256-GCM encryption: MACsec, IPsec and VXLANsec
- Over 5M IPv4 routes with R3AK large-route scale
- Up to 384K MAC addresses and algorithmic ACLs for 400K+ rules
- 400G ZR/ZR+ support with dedicated OSFP line system ports
- Synchronous Ethernet and IEEE 1588 PTP timing
- EVPN-VXLAN, LANZ microburst detection, Zero Touch Provisioning and accelerated sFlow
- Open programmable APIs (JSON-RPC, NETCONF) and CloudVision support
- Arista EOS single binary image with Linux shell access

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
- Maximum 100G ports: 144 (breakout)
- Maximum 50G ports: 232 (breakout)
- Maximum 25/10G ports: 232 (breakout)
- Maximum 40G ports (using QSFP+): 36
- Line system ports: 2 x OSFP-LS
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Packet forwarding: 5.4 Bpps
- Latency: from 3.8 us
- Packet buffer memory: 16 GB
- System memory: 64 GB
- CPU: Eight-core x86
- SSD storage: 480 GB
- Encryption: TunnelSec on all ports
- Precision timing: PTP and SyncE with OCXO and PPS/10M/ToD inputs
- Management ports: 1 x 100/1000, 1 x RS-232 serial (RJ-45), 1 x USB
- Power supplies: 2 x hot-swap PWR-2411 AC, 1+1 redundant
- Fans: 4 x hot-swap FAN-7012H, N+1 redundant
- Airflow: front to rear
- Typical/maximum power draw: 643 W / 1283 W, excluding transceivers
- Form factor: 2RU, 43.99 x 8.79 x 61.18 cm including handles
- Weight: 24.09 kg
- Minimum EOS: 4.30.0
- Operating temperature: 0 to 40 C
- Relative humidity: 5 to 90%

FAQs

Q: What software does the 7280R3A run and which version is required?
A: It runs Arista EOS, with a minimum of EOS 4.30.0. The datasheet lists it under EOS Feature Licenses Group 5.

Q: What power supplies does this SKU use?
A: It uses two hot-swap AC power supplies (PWR-2411) in 1+1 redundancy, with AC input of 200-240 VAC. Typical draw is 643 W and maximum is 1283 W, excluding transceivers.

Q: Which optics and speeds does it support?
A: The 400G QSFP-DD ports accept QSFP-DD, QSFP100 and QSFP+ optics and DACs, with breakout to 100G, 50G, 40G and 25/10G. Two OSFP-LS ports support line system and 400G ZR/ZR+ use.

Q: How does the R3AK model differ from other 7280R3A variants?
A: The R3AK variant adds large-route scale of over 5M IPv4 routes and TunnelSec wire-speed encryption on all ports. This SKU also has front-to-rear airflow and two AC power supplies.

Q: Which spare parts match this switch?
A: Matching parts include the FAN-7012H-RED fan module, PWR-2411-AC-RED and PWR-2411-DC-RED power supplies, and KIT-7202 and KIT-7004-2UL rack kits.