Arista DCS-7280R4K-64QC-10PE-F | 7280R4 64-Port 100G + 10-Port 800G Switch, 25.6Tbps

Q: What deployment scenarios is the DCS-7280R4K-64QC-10PE-F optimized for?
A: This switch is ideal for AI/ML cluster spine architectures, high-performance data center leaf deployments requiring mixed 100G and 800G connectivity, data center interconnect (DCI), IP storage networks, and service provider backbones demanding large routing scale and deep buffering.

Q: What encryption capabilities does the 7280R4K model provide?
A: The 7280R4K series supports line-rate TunnelSec encryption using AES-256-GCM on all ports at all speeds without performance penalty. It offers MACsec for Layer 2 point-to-point encryption, IPsec for Layer 3 encrypted tunnels, and VXLANsec for overlay network security, eliminating the need for external encryption appliances.

Q: How does the routing scale differ from standard 7280R4 models?
A: The 7280R4K variant includes enhanced routing scale supporting up to 5 million IP routes with the FlexRoute engine and EOS NetDB, compared to Internet-scale routing in standard models. This makes it suitable for large-scale service provider and content delivery network deployments.

Q: Can this switch support both 100G and 800G optics simultaneously?
A: Yes, the DCS-7280R4K-64QC-10PE-F provides 64 dedicated 100GbE QSFP ports and 10 dedicated 800GbE OSFP ports, allowing simultaneous operation of both interface speeds. It also supports multi-speed operation including 25G, 50G, 100G, 200G, 400G, and 800G with appropriate optics.

Q: What makes the virtual output queueing architecture beneficial?
A: The VOQ architecture with up to 32GB of deep buffers eliminates head-of-line blocking and virtually eliminates packet drops in congested scenarios. This is critical for AI training workloads, IP storage, and data analytics applications requiring lossless, low-latency performance with mixed traffic patterns.