Arista Networks, Inc. DCS-7280QR-C36-R network switch 56×40GbE QSFP+ 12×100GbE QSFP28

56-port 40GbE QSFP+ switch for dense data-centre

The Arista DCS-7280QR-C36-R is a 1 RU switch delivering 56 ports of 40GbE QSFP+ connectivity for high-density leaf or spine deployments. It targets network engineers who need wire-speed forwarding in a single rack unit without sacrificing uplink capacity. The platform suits environments where consistent low latency and deep buffers matter for east-west traffic patterns.

Rear-to-front airflow with hot-swap power and fans

Two 745W hot-swappable AC power supplies and four hot-swappable fans use rear-to-front airflow to match cold-aisle containment layouts. Twelve 100GbE QSFP28 uplink ports provide flexible breakout options for aggregation to core switches. Management access includes a 10/100/1000 RJ-45 port, an RS-232 serial console and a USB port; rack mounts are not included and must be sourced separately.

Replaces older 10GbE or 40GbE fixed-configuration

The jump is worth it when you need 100GbE uplinks alongside dense 40GbE access ports in a 1 RU form factor. Buyers who require integrated rack rails or front-to-rear cooling should evaluate other models. The switch also does not suit teams lacking QSFP+/QSFP28 transceiver inventory or the operational expertise to manage Arista EOS in large-scale fabrics.