Monitoring Power-supplies is done using the ENTITY-MIB (RFC-2737) and MIBs which extend/supplement the ENTITY-MIB. The ENTITY-MIB’s entPhysicalTable defines the MIB identifierfor an inventory item, entPhysicalIndex, which is used by the other MIBs extending ENTITY-MIB information.
The relevant Cisco extensions to the ENTITY-MIB supported:
NOTE: In XR Power Supply information is considered “admin” restricted information which is therefore only accessible via community-strings/usernames configured with the “SystemOwner” keyword, ie. “snmp-server community adminLevelCommStr RO SystemOwner” (then poll with “adminLevelCommStr” as community-string).
Use the entPhysicalTable to determine the physical hierarchy of entities. The entPhysicalTable maps entPhysicalIndex values to the other identifying information for each physical entity modeled in the system. The hierarchy of entities is learned using the following objects:
Indicates the generic type of entity being modeled.
Indicates the parent entity for the entity being modeled.
Indicates the position number of the entity within its parent entity relative to other entities of the same class.
entPhysicalTable Hierarchy for ASR9K Power-Supply Entities
The entity hierarchy visualization:
Entity Hierarchy Visualization for Power Supplies with Entity Details
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