Cisco Nexus 9800 36-Port 400G QSFP-DD Line Card with MACsec

Build dense, high-throughput fabric capacity with a Cisco Nexus line card designed for modern data center switching. The 36-port 400G QSFP-DD design supports large-scale east-west traffic patterns, making it a strong fit for core aggregation, spine architectures, and high-performance environments where port density directly affects design efficiency. MACsec support adds an important layer for organizations that need link-level protection without sacrificing the speed expected from 400G infrastructure. That makes this line card especially relevant for regulated environments, multi-tenant data centers, and enterprise fabrics carrying sensitive workloads between switching tiers. This is not a commodity access component. It is built for teams that need to preserve fabric headroom, reduce oversubscription pressure, and keep the network ready for growth. When the cost of congestion or redesign is high, a 36-port 400G line card with MACsec offers the kind of capacity and security alignment that justifies premium infrastructure planning.