Identity & Definition
This managed InfiniBand switch, the NVIDIA Mellanox MQM9700-NS2F (NVIDIA P/N 920-9B210-00FN-0M0), is a Quantum-2 NDR-generation fixed-configuration switch providing 32 OSFP ports in a 2U form factor. Each port operates at 400 Gb/s NDR (800 Gb/s bidirectional), delivering an aggregate switching capacity of 25.6 Tb/s. This is an InfiniBand-only switch and does not support Ethernet. The MQM9700-NS2F uses P2C (port-to-connector / front-to-back) airflow direction. This is a refurbished unit, tested and verified by T.E.S IT-SOLUTIONS.
Engineering Context
The MQM9700-NS2F is built on NVIDIA's Quantum-2 ASIC, which provides 64 NDR ports at 400 Gb/s each internally. In the NS2F configuration, these are presented as 32 OSFP cages, each carrying 8x100G PAM4 lanes for 800 Gb/s bidirectional throughput per port. The switch supports SHARP (Scalable Hierarchical Aggregation and Reduction Protocol) for in-network computing, offloading collective operations from CPUs/GPUs. It also supports adaptive routing and congestion control for zero-packet-loss fabric operation. The integrated management processor provides full SNMP, CLI, and Unified Fabric Manager (UFM) support.
Deployment & Use Cases
Core or leaf switch in NVIDIA DGX SuperPOD and HGX-based AI training clusters. Spine or leaf in large-scale HPC supercomputing fabrics requiring NDR 400 Gb/s per-port bandwidth. GPU-to-GPU interconnect fabric for NCCL, UCX, and GPUDirect RDMA workloads. High-radix fat-tree or dragonfly topologies in research institutions and national labs. Storage fabric backbone for high-throughput parallel file systems (Lustre, GPFS/Spectrum Scale) over InfiniBand.
Technical Specifications
Manufacturer: NVIDIA Mellanox
Part Number (MPN): MQM9700-NS2F
NVIDIA P/N: 920-9B210-00FN-0M0
Switch ASIC: Quantum-2 NDR
Port Count: 32 OSFP cages (64 NDR lanes total)
Per-Port Speed: 400 Gb/s NDR (800 Gb/s bidirectional)
Aggregate Switching Capacity: 25.6 Tb/s
Airflow: P2C (Port-to-Connector / Front-to-Back)
Management: Fully Managed (CLI, SNMP, UFM)
In-Network Computing: SHARP v3
Form Factor: 2U rack-mount
Protocol: InfiniBand NDR
Condition: Refurbished
Compatibility & Hard Constraints
The 32 OSFP ports accept NDR OSFP transceivers, OSFP DAC cables, OSFP AOC cables, and OSFP fanout/splitter cables (such as MCP7Y40 or MCP7Y50 series for NDR200 breakout). The MQM9700-NS2F is NOT an Ethernet switch and does not support any Ethernet protocol. It is NOT compatible with HDR (QSFP56) or EDR (QSFP28) transceivers or cables — those require different switch models (QM8700 for HDR, QM8790 for HDR). The P2C airflow variant (NS2F) must be matched to front-to-back datacenter cooling; for back-to-front cooling, the NS2R variant is required. This switch requires NVIDIA UFM or CLI-based subnet management for fabric configuration.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every switch for POST verification, port-level connectivity, fan and PSU operation, and firmware boot before shipping. Technical consultation is available for InfiniBand fabric topology design, airflow planning, and cable compatibility. Global shipping with 1–3 business day handling from our facility.