The Entity MIB identifies the physical entities that are supported by an SNMP agent.
The Entity MIB is specified in RFC 4133. Extreme 9920 software supports the following.
| Name | OID | Syntax | Description |
| entPhysicalIndex | .1.3.6.1.2.1.47.1.1.1.1.1 | PhysicalIndex | Value that uniquely identifies the physical entity |
| entPhysicalDescr | .1.3.6.1.2.1.47.1.1.1.1.2 | SnmpAdminString | Description of the physical entity |
| entPhysicalVendorType | .1.3.6.1.2.1.47.1.1.1.1.3 | AutonomousType | Vendor-specific indicator of the hardware type for the physical entity |
| entPhysicalContainedIn | .1.3.6.1.2.1.47.1.1.1.1.4 | PhysicalIndexOrZero | Value of entPhysicalIndex of the physical entity that contains this physical entity |
| entPhysicalClass | .1.3.6.1.2.1.47.1.1.1.1.5 | PhysicalClass | Indicator of the hardware type of the physical entity |
| entPhysicalParentRelPos | .1.3.6.1.2.1.47.1.1.1.1.6 | Integer32 | Indicator of this child component relative to its sibling components |
| entPhysicalName | .1.3.6.1.2.1.47.1.1.1.1.7 | SnmpAdminString | Name of the physical entity |
| entPhysicalHardwareRev | .1.3.6.1.2.1.47.1.1.1.1.8 | SnmpAdminString | Vendor-specific identifier of the hardware revision for the physical entity |
| entPhysicalFirmwareRev | .1.3.6.1.2.1.47.1.1.1.1.9 | SnmpAdminString | Vendor-specific identifier of the firmware revision for the physical entity |
| entPhysicalSoftwareRev | .1.3.6.1.2.1.47.1.1.1.1.10 | SnmpAdminString | Vendor-specific identifier of the software revision for the physical entity |
| entPhysicalSerialNum | .1.3.6.1.2.1.47.1.1.1.1.11 | SnmpAdminString | Vendor-specific serial number for the physical entity |
| entPhysicalMfgName | .1.3.6.1.2.1.47.1.1.1.1.12 | SnmpAdminString | Name of the manufacturer of the physical entity |
| entPhysicalModelName | .1.3.6.1.2.1.47.1.1.1.1.13 | SnmpAdminString | Vendor-specific model name for the physical entity |
| entPhysicalAlias | .1.3.6.1.2.1.47.1.1.1.1.14 | SnmpAdminString | Alias for the physical entity, as specified by the network manager |
| entPhysicalAssetID | .1.3.6.1.2.1.47.1.1.1.1.15 | SnmpAdminString | Tracking identifier for the physical entity, as specified by the network manager |
| entPhysicalIsFRU | .1.3.6.1.2.1.47.1.1.1.1.16 | TruthValue | Indicates whether the vendor considers this physical entity to be a field replaceable unit |
| entPhysicalMfgDate | .1.3.6.1.2.1.47.1.1.1.1.17 | DateAndTime | Date that the physical entity was manufactured |
| entPhysicalUris | .1.3.6.1.2.1.47.1.1.1.1.18 | Octet String | Extra information about the physical entity |