The NVIDIA Mellanox MMB7500 is the x86 dual-core management module for the CS7500-family InfiniBand director chassis. This is NOT a switch blade and does NOT provide data-plane forwarding; it is the supervisory CPU module that runs MLNX-OS on the chassis, terminates the management Ethernet, and exposes serial console, REST/CLI, and SNMP. MPN: MMB7500. Condition: Refurbished, boot-tested at T.E.S IT-SOLUTIONS.
Engineering context. The MMB7500 carries an x86 dual-core CPU running the Mellanox switch operating system. It manages chassis inventory, monitors blade and PSU health, applies firmware updates, programs the spine and leaf switch ASICs, and handles the InfiniBand subnet manager (SM) when the chassis is configured to run an embedded SM. Management modules are normally deployed in active/standby pairs for redundancy.
Deployment and use cases. Required for any production deployment of a CS7500-family director chassis: HPC fabrics with embedded subnet manager, large InfiniBand SANs, AI training clusters where the chassis is the central spine, and any environment that needs out-of-band serial and Ethernet access to the director switch.
Technical specifications:
- Model: MMB7500
- CPU: x86 dual-core
- Role: Chassis management module for CS7500-family
- Functions: MLNX-OS execution, switch ASIC programming, chassis health monitoring, firmware update orchestration
- Subnet manager: capable of running the embedded InfiniBand SM
- Out-of-band access: Ethernet management, serial console
- Compliance: RoHS 6
- Redundancy: deployable as active/standby pair
- Condition: Refurbished, tested
Compatibility and constraints. Compatible only with CS7500-family director chassis. NOT compatible with the HDR-generation CS8500 or NDR-generation directors, which use different management modules and a different firmware family. Buyer is responsible for verifying chassis hardware revision and the MLNX-OS image required for the existing fabric.
Why TES. T.E.S IT-SOLUTIONS supplies the MMB7500 boot-tested and visually inspected, with optional consultancy on chassis pairing and MLNX-OS revision matching. Standard handling time is 1–3 business days. Browse tes-itsolutions.com for additional CS7500 spares including switch blades, PSUs, and fan trays.