MELLANOX-ENTITY-STATE-MIB

Description: Tracks operational and administrative state of hardware entities on Mellanox switches.

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This is a Mellanox (NVIDIA Networking) private MIB tracking the operational and administrative state of hardware entities, such as line cards, modules, or ports, on Mellanox switches. It exposes a state table (mellanoxEntStateTable) recording each module's current state, previous state, and a textual state-change description, alongside notification objects for state-transition traps. Its core purpose is hardware status monitoring: detecting when a module transitions between states such as up, down, initializing, or faulted, and providing a human-readable reason for the transition to speed up root-cause analysis. It is designed to complement the standard ENTITY-MIB, which provides the physical inventory, while this MIB adds richer state-transition detail and history not covered by the standard. It is deployed on Mellanox switches in high-performance data center and HPC fabrics where administrators need fast detection of module/port hardware failures. Engineers can download the MELLANOX-ENTITY-STATE-MIB file directly to load it into their MIB browser.

An administrator would poll mellanoxEntStateModuleCurrentState against mellanoxEntStateModulePreviousState to detect a module that recently transitioned from 'operational' to a faulted or disabled state. mellanoxEntStateModuleStateDescr provides the specific reason text, useful when a transceiver or line card fails and needs replacement. Subscribing to mellanoxEntStateMibNotifications lets a NOC receive a trap the moment a critical switch module changes state, rather than waiting for the next poll cycle.

Mellanox entity state monitoring including module status, faults, and physical inventory.