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Arista

Arista DCS-7280DR3AK-36S-F | 7280R3A 36-Port 400G QSFP-DD Switch, TunnelSec, 2x AC

SKU:DCS-7280DR3AK-36S-F

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Description

The Arista 7280R3A 36-port 400G switch is a 2RU fixed data centre switch router for large-scale layer 2/3 cloud data centres, enterprise data centres and service provider networks. It suits secure internet peering, carrier edge VPN services, EVPN services for 5G/MEC, CIN and metro, carrier core transport and dense 400G DWDM deployments.

This R3AK model provides 36 x 400GbE QSFP-DD ports plus 2 x OSFP-LS ports for 400G-ZR/ZR+ DWDM, delivering 14.4 Tbps (28.8 Tbps full duplex) at 5.4 Bpps with 16 GB of packet buffer. It adds large routing scale and TunnelSec encryption (MACsec, IPsec and VXLANsec) on every port. This SKU is front-to-rear airflow with 2 x AC power supplies and secure boot enabled. Typical power draw is 643 W, with a maximum of 1283 W excluding transceivers.

The QSFP-DD ports accept 400G optics and support breakout to 100G, 50G and 25/10G, with 40G available using QSFP+ optics. It runs Arista EOS, with a minimum release of 4.30.0, and is managed with CloudVision.

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

Features

- TunnelSec wire-speed encryption (IEEE 802.1AE MACsec, IPsec and VXLANsec) using AES-256-GCM on interface speeds from 10G to 400G
- Large-scale routing with over 5M IPv4 routes on R3AK models, up to 384K MAC addresses and algorithmic ACLs for 400K+ rules
- Ultra-deep packet buffer with Virtual Output Queues per port to eliminate head-of-line blocking
- 400G ZR and ZR+ support, with dedicated OSFP-LS ports for dense DWDM
- Precision timing with PTP (IEEE 1588) and Synchronous Ethernet
- Arista EOS with CloudVision, EVPN-VXLAN, LANZ microburst detection, Zero Touch Provisioning and JSON-RPC/NETCONF APIs
- Redundant hot-swap power supplies and fans, over 94% efficient and designed for NEBS
- Secure boot enabled on this SKU

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/ZR+ DWDM
- 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)
- Packet forwarding: 5.4 Bpps
- Latency: from 3.8 us
- Packet buffer: 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: 1 x 100/1000 port, 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
- Dimensions (W x H x D) including handles: 43.99 x 8.79 x 61.18 cm
- Rack units: 2RU
- Weight: 24.09 kg
- Minimum EOS: 4.30.0
- Secure boot: enabled

FAQs

Q: What does the R3AK suffix mean on this switch?
A: R3AK denotes the 7280R3A model with large routing scale and TunnelSec encryption built in. The -F suffix indicates front-to-rear airflow with 2 x AC power supplies and secure boot enabled.

Q: Does it need a separate licence for TunnelSec?
A: TunnelSec encryption and large-route scale are built into this model. It runs Arista EOS with EOS feature licences listed as Group 5. Other software feature licences and CloudVision subscriptions are ordered separately.

Q: What power supplies does it use?
A: It uses 2 x hot-swap PWR-2411 power supplies in a 1+1 redundant configuration, and this SKU is the AC version. Typical draw is 643 W and maximum draw is 1283 W, excluding transceivers.

Q: Can the 400G ports break out to lower speeds?
A: Yes. The QSFP-DD ports support breakout to 100G, 50G and 25/10G, and 40G using QSFP+ optics. The 2 x OSFP-LS ports are for 400G-ZR/ZR+ DWDM optics.

Q: Which spare parts are compatible with it?
A: Compatible spares include PWR-2411-AC-RED, PWR-2411-DC-RED and FAN-7012H-RED. Rack kits KIT-7202 and KIT-7004-2UL and the CAB-SYNCE-RJ Time of Day adapter are also listed for this platform.

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