Cisco NCS-57B1-6D24H-S= Chassis 6x400G 24x100G QSFP-DD

Move more traffic through fewer rack units with a chassis designed for high-capacity service-provider transport. The Cisco NCS57B1 Fixed Base HW chassis combines 6 x 400G and 24 x 100G QSFP-DD connectivity to support dense aggregation, backbone handoff, and high-throughput edge designs. That mix gives network teams room to scale without immediately redesigning the platform around a new port class. Built for environments where port economics and operational consistency matter, this chassis is suited to carriers, large enterprises, and cloud interconnect sites that need predictable expansion paths. QSFP-DD support keeps the platform aligned with modern optical and electrical transport requirements, while the fixed base hardware design simplifies standardization across deployments. For teams planning around long service windows, this model helps preserve investment by concentrating capacity in a single chassis rather than spreading traffic across more devices. It is a strong fit when the goal is to sustain critical transport services, reduce rack footprint pressure, and keep high-speed links organized in a platform intended for service-provider scale.