NVIDIA 920-9N42C-00FB-7C0 | Spectrum-4 64-Port 400G Switch, 25.6Tb/s, 2x 25G

Q: What deployment scenarios is the NVIDIA MSN5400 best suited for?
A: The MSN5400 is designed for leaf, spine, and super-spine roles in modern data center fabrics, particularly for AI cloud infrastructure, hyperscale deployments, and high-performance computing environments requiring 400GbE connectivity at scale.

Q: Can the QSFP56-DD ports be broken out to lower-speed connections?
A: Yes, the 64 QSFP56-DD ports support breakout configurations to multiple lower-speed connections using splitter cables, including up to 256 ports of 100GbE, 50GbE, 25GbE, or 10GbE for flexible network design.

Q: What is the difference between P2C and C2P airflow variants?
A: P2C (Power-to-Connector) airflow draws air from the power supply side and exhausts through the port side, while C2P (Connector-to-Power) does the opposite. The correct airflow direction must match your data center hot-aisle/cold-aisle design.

Q: Does this switch support RDMA over Converged Ethernet?
A: Yes, the Spectrum-4 ASIC provides accelerated RoCE capabilities with advanced congestion control and telemetry features, making it well-suited for storage, AI training, and HPC workloads requiring low-latency RDMA transport.

Q: What network operating systems are compatible with this switch?
A: This SKU includes Cumulus Linux authentication. The SN5400 platform also supports SONiC and NVIDIA Onyx, allowing flexible NOS selection based on deployment requirements and ecosystem preferences.