Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module Configuration Guide - Page 543

Entity MIBS The Entity MIB provides a mechanism for presenting hierarchies of physical entities using SNMP tables. The Entity MIB contains the following groups, which describe the physical elements and logical elements of a managed system The following tables are implemented for the MXL Switch Platform. Physical Entity A physical entity or physical component represents an identifiable physical resource within a managed system. Zero or more logical entities may utilize a physical resource at any given time. Determining which physical components are represented by an agent in the EntPhysicalTable is an implementation-specific matter. Typically, physical resources (e.g., communications ports, backplanes, sensors, daughter-cards, power supplies, the overall chassis), which can be managed via functions associated with one or more logical entities, are included in the MIB. Containment Tree Each physical component may be modeled as contained within another physical component. A containment-tree is the conceptual sequence of entPhysicalIndex values that uniquely specifies the exact physical location of a physical component within the managed system. It is generated by following and recording each entPhysicalContainedIn instance up the tree towards the root, until a value of zero indicating no further containment is found. Figure 30-29. Sample Entity MIBS outputs FTOS#show inventory optional-module Unit Slot Expected Inserted Next Boot Power 0 0 QSFP+ QSFP+ AUTO Good 0 1 10GBASE-T 10GBASE-T AUTO Good 1 0 QSFP+ QSFP+ AUTO Good 1 1 10GBASE-T 10GBASE-T AUTO Good 2 0 QSFP+ QSFP+ AUTO Good 2 1 SFP+ SFP+ AUTO Good Simple Network Management Protocol (SNMP) | 541