Arista DCS-7280CR3AK-48D6-R | 7280R3A 48x100G QSFP Switch, 6x 400G, TunnelSec, Rear-to-Front

SKU:DCS-7280CR3AK-48D6-R

Stock Status: Enquire

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Description

The Arista 7280R3A is a 2RU fixed data centre switch router built for large-scale layer 2 and layer 3 cloud designs, enterprise data centres and service provider networks. This R3AK model suits secure internet peering, carrier edge VPN services, EVPN services for 5G and MEC, metro and carrier core transport, and 400G DWDM deployments.

It provides 48 x 100GbE QSFP100 ports and 6 x 400GbE QSFP-DD ports, plus one OSFP-LS port for dense 400G-ZR. Throughput is 7.2 Tbps (14.4 Tbps full duplex) with a 2.7 Bpps forwarding rate, latency from 3.8 us and an 8 GB packet buffer. The R3AK tier adds large routing tables, with over 5M IPv4 routes depending on profile, and TunnelSec hardware encryption on all ports. This SKU has rear-to-front airflow and two hot-swap AC power supplies in a 1+1 arrangement, with four hot-swap fans.

It works with QSFP, OSFP and QSFP-DD optics from 10G to 400G, including 400G ZR and ZR+ coherent modules, and ports support breakout to 25G, 50G and 200G modes depending on transceiver and cable. It runs Arista EOS 4.31.1 or later, with software features licensed under the Group 4 fixed-switch family, and is managed with Arista CloudVision.

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

Features

- Arista EOS with a single 64-bit binary image and full Linux shell access
- Large-scale R3AK tier with over 5M IPv4 routes and up to 384K MAC addresses depending on profile
- TunnelSec encryption on all ports (MACsec, IPsec, VXLANsec)
- Virtual output queue architecture and deep buffers to eliminate head-of-line blocking
- 512-way ECMP, MLAG, EVPN-VXLAN, and VXLAN bridging and routing
- LANZ microburst detection, Accelerated sFlow, Zero Touch Provisioning and CloudVision support
- PTP and SyncE precision timing
- Support for 400G ZR and ZR+ coherent optics
- Open programmable APIs (JSON-RPC, 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: 48 x 100GbE QSFP100, 6 x 400GbE QSFP-DD
- Additional port: 1 x OSFP-LS for dense 400G-ZR
- Max 400G ports: 6
- Max 100G ports: 68
- Max 50G ports: 114
- Max 40G ports (using QSFP+): 54
- Max 25/10G ports: 114
- Max total interfaces: 116
- Throughput (FDX): 7.2 (14.4) Tbps
- Forwarding rate: 2.7 Bpps
- Latency: From 3.8 us
- Packet buffer memory: 8 GB
- System memory: 64 GB
- CPU: Eight-core x86
- SSD storage: 120 GB
- Encryption: All ports (TunnelSec, K model)
- 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 AC, 1+1 redundant (PWR-1512-AC)
- Fans: 4 x hot-swap, N+1 redundant (FAN-7012H)
- Airflow direction: Rear to front
- Typical/Max power draw: 388 W / 979 W, excluding transceivers
- Form factor: 2RU
- Dimensions (W x H x D) inc. handles: 43.99 x 8.79 x 68.38 cm
- Weight: 22.04 kg
- Operating temperature: 0 to 40 C
- Minimum EOS: 4.31.1

FAQs

Q: How is the R3AK model different from other 7280R3A switches?
A: The R3AK tier adds large routing tables, with over 5M IPv4 routes depending on profile, and TunnelSec hardware encryption on all ports. This -R SKU also has rear-to-front airflow and 2 x AC power supplies.

Q: Does it need a software licence?
A: It runs Arista EOS with features licensed under the Group 4 fixed-switch family, such as LIC-FIX-4-E for Enhanced L3 and LIC-FIX-4-ENCR for encryption. TunnelSec encryption services need a licence file to enable.

Q: What power supplies does it use?
A: It uses two hot-swap AC power supplies (PWR-1512-AC) in a 1+1 redundant arrangement. Typical draw is 388 W and maximum is 979 W, excluding transceivers.

Q: Which optics does it support?
A: The ports accept QSFP, OSFP and QSFP-DD optics from 10G to 400G, including 400G ZR and ZR+ coherent modules. Breakout to 25G, 50G and 200G modes is supported depending on transceiver and cable.

Q: Which EOS release does it require?
A: It requires Arista EOS 4.31.1 or later and is managed with Arista CloudVision.