NVIDIA Mellanox MSB7700-ES2F Switch-IB EDR 100Gb/s 36-Port InfiniBand Switch: This is a 1U externally-managed Switch-IB EDR InfiniBand switch with 36 QSFP28 ports operating at 100 Gb/s per port. This is a professionally refurbished unit. It is NOT a Spectrum Ethernet switch and it is NOT internally managed; subnet management must be provided by an external Subnet Manager such as another node running OpenSM, an internally-managed switch like the MSB7790, or NVIDIA UFM.
Engineering Context
Built on the Switch-IB ASIC, the MSB7700-ES2F delivers 7.2 Tb/s aggregate switching capacity (36 ports x 100 Gb/s, full bisection). Port-to-port latency is approximately 90 ns. The switch supports adaptive routing, congestion control, and a hardware-based Subnet Management Agent (SMA). Power is supplied by two hot-swappable AC PSUs and airflow is P2C (power-to-connector). The 36-port radix is the standard EDR fabric building block for 1:1 leaf, oversubscribed leaf, or spine deployments. A rail kit is included.
Deployment and Use Cases
The MSB7700-ES2F serves as a leaf or spine switch in EDR InfiniBand fat-tree fabrics for HPC clusters running MPI workloads such as LAMMPS, GROMACS, and OpenFOAM, RDMA-attached storage with NVMe-oF over InfiniBand, GPU clusters interconnecting DGX-1 or pre-Ampere GPU nodes via ConnectX-4 HCAs, and machine learning training fabrics where 100 Gb/s per node is sufficient and an external Subnet Manager is preferred over internal switch management.
Technical Specifications
Model: MSB7700-ES2F
Switch ASIC: Switch-IB
Ports: 36 x QSFP28
Port Speed: 100 Gb/s EDR per port
Aggregate Bandwidth: 7.2 Tb/s (full bisection)
Port-to-Port Latency: ~90 ns
Management: Externally managed (requires external Subnet Manager)
Power Supply: 2 x hot-swappable AC PSUs
Airflow: P2C (power-to-connector)
Form Factor: 1U rack-mountable
Accessories: Rail kit included
Condition: Refurbished
Compatibility and Hard Constraints
The MSB7700-ES2F is compatible with NVIDIA Mellanox ConnectX-4, ConnectX-5, and ConnectX-6 HCA adapters with QSFP28 ports at EDR (100 Gb/s) speeds. It uses QSFP28 EDR copper or active optical cables. It does NOT have an internal subnet manager, so the fabric requires either another node running OpenSM, an internally-managed switch (such as the MSB7790), or NVIDIA UFM. It does NOT support HDR (200 Gb/s) or NDR (400 Gb/s) per-port speeds; HDR/NDR cables negotiate down to EDR. PSU and fan modules must share the same airflow direction.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS supplies the MSB7700-ES2F as a professionally refurbished unit with full functional testing of all 36 ports, both PSUs, fans, and the management agent. A rail kit is included. Technical consultation is available to verify Subnet Manager strategy, cable selection, and HCA compatibility. Global shipping with 1-3 business day handling time.