Arista DCS-7280R4-32DE-F | 7280R4 32-Port 800G QSFP-DD Switch Router, 25.6Tbps

Q: What is the difference between the R4 and R4K variants?
A: The 7280R4 provides standard data center routing scale and functionality, while the 7280R4K adds enhanced FlexRoute capacity for internet peering applications (up to 5M IP routes), line-rate TunnelSec AES-256-GCM encryption on all QSFP-DD ports, and Algorithmic ACLs for scalable policy control with 100K+ entries.

Q: Can the QSFP-DD ports operate at lower speeds?
A: Yes, the 32 x QSFP-DD ports support multi-rate operation including 800G, 400G, 200G, 100G, 50G, and 25G speeds through appropriate optics and breakout configurations, providing deployment flexibility for mixed-speed environments and phased network upgrades.

Q: What deployment scenarios are ideal for the 7280R4-32DE-F?
A: The switch router is optimized for data center spine and super-spine architectures, AI/ML GPU-to-GPU fabrics requiring lossless forwarding, high-performance storage networks with RDMA over Converged Ethernet, content delivery networks requiring high bandwidth and deep buffers, and service provider IP edge and data center interconnect applications.

Q: Does this switch support internet-scale BGP routing?
A: Yes, the 7280R4 includes Arista FlexRoute and EOS NetDB for flexible routing table profiles. The base R4 model supports substantial routing scale, while the R4K variant extends capacity to over 5 million IPv4 routes for full internet table support in peering and service provider edge environments.

Q: What is the advantage of VOQ architecture and deep buffering?
A: The Virtual Output Queueing architecture eliminates head-of-line blocking by maintaining separate queues per input-output port pair. Combined with dynamic deep buffers, this provides deterministic lossless forwarding for TCP incast scenarios, bursty traffic patterns, and convergence events common in large-scale data centers and storage networks.