Arista DCS-7280CR3AM-24D12-R | 7280R3A 24-Port 100G Switch, 12x 400G QSFP-DD, TunnelSec

Q: What encryption technologies does the DCS-7280CR3AM-24D12-R support?
A: This model features TunnelSec encryption supporting IEEE 802.1AE MACsec for point-to-point link encryption, IPsec for router-to-router encrypted tunnels, and VXLANsec for VTEP-level overlay encryption. All encryption operates at line rate using AES-256-GCM cipher across all ports from 1G to 400G speeds.

Q: What deployment scenarios is this switch optimized for?
A: The 7280CR3AM-24D12-R is ideal for data center spine and leaf architectures, internet peering, high-performance storage networks, content delivery networks, and secure data center interconnect. The deep 8GB buffer and encryption capabilities make it well-suited for AI/ML fabrics, IP storage, and WAN edge deployments requiring lossless forwarding.

Q: How does the rear-to-front airflow benefit data center design?
A: The rear-to-front (-R suffix) airflow is designed for cold aisle containment deployments where cool air enters from the rear and hot air exhausts from the front. This model includes dual redundant hot-swappable AC power supplies and fans for continuous operation.

Q: What is the difference between the R3A, R3AM, and R3AK variants?
A: The R3A is the standard model, the R3AM adds TunnelSec encryption (MACsec, IPsec, VXLANsec) as in this model, and the R3AK further adds large-scale routing with FlexRoute supporting over 5 million routes plus Algorithmic ACLs for advanced policy and telemetry.

Q: What flexible port breakout options are available?
A: The 400G QSFP-DD ports can be broken out to 2x 200G or 4x 100G or 8x 50G. The 100G QSFP ports support breakout to 2x 50G, 4x 25G, or 4x 10G. This enables a maximum of 116 total interfaces at lower speeds for flexible connectivity in spine-and-leaf or universal leaf designs.