MY-ENTITY-MIB

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Organization: D-Link Crop.

Last Updated: 2002-03-20

Category: Hardware Inventory

Description: Provides D-Link switch hardware entity inventory and component relationship mapping.

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What Is MY-ENTITY-MIB?

MY-ENTITY-MIB is a D-Link proprietary MIB that provides a hardware entity inventory for D-Link switches, similar in purpose to the standard ENTITY-MIB but using D-Link's own object naming. It exposes a device information table listing each physical or logical component with descriptive text, slot number, MAC address, priority, and alias name, alongside overall device power status and separate hardware and software version fields. This is explicitly a hardware/software status MIB: administrators use it to inventory installed modules or stack units, confirm power status, and check hardware revision and firmware/software version for compliance and troubleshooting, and the module also defines traps for entity-related events. It parallels the IETF ENTITY-MIB concept of a physical entity table but is specific to D-Link's chassis/stacking architecture. It is deployed on D-Link stackable or modular switches where administrators need to track per-unit hardware/firmware versions and power state across a stack. Engineers can download the MY-ENTITY-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in MY-ENTITY-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

D-Link managed/stackable switch

Monitoring Examples

An administrator polls myDeviceInfoTable, indexed by myDeviceInfoIndex and myDeviceInfoSlotNumber, to enumerate each unit in a switch stack along with its myDeviceInfoDescr, myDeviceMacAddress, and myDeviceAlias. Checking myDeviceSWVersion and myDeviceHWVersion across all stack members verifies firmware consistency before a stack-wide upgrade. If myDevicePowerStatus reports a fault or loss of one power feed on a given unit, combined with myEntityMIBTraps notifications, the admin is alerted to investigate a failing power supply on that stack member.

What Can Be Monitored

per-unit hardware version
per-unit software/firmware version
power supply status
device MAC address
slot number and stack priority
device alias/description

Imported Objects

From MY-SMI

myMgmt

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

DisplayString
MacAddress
RowStatus
TruthValue

How to Use in IPNetwork Monitor

Example using myDevicePowerStatus OID:

Select a D-Link managed/stackable switch (hardware entity inventory) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type myDevicePowerStatus into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The power status of device. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the value is anything other than 'rpsLinkAndPower', since that indicates the condition this object reports has changed to one worth investigating. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
myEntityMIB	1.3.6.1.4.1.171.10.97.2.21			This module defines my entity mibs.
myDeviceMIBObjects	1.3.6.1.4.1.171.10.97.2.21.1
I32 myDeviceMaxNumber	1.3.6.1.4.1.171.10.97.2.21.1.1	Integer32	read-only	Max number of devices of the system permitting.
myDeviceInfoTable	1.3.6.1.4.1.171.10.97.2.21.1.2		not-accessible	List of devices.
myDeviceInfoEntry	1.3.6.1.4.1.171.10.97.2.21.1.2.1		not-accessible	Entry of a device information.
I32 myDeviceInfoIndex	1.3.6.1.4.1.171.10.97.2.21.1.2.1.1	Integer32	read-only	An unique value of each devices in system. Its value ranges between 1 and the value of the object myDeviceNumber.
STR myDeviceInfoDescr	1.3.6.1.4.1.171.10.97.2.21.1.2.1.2	DisplayString	read-only	Description of the device.
I32 myDeviceInfoSlotNumber	1.3.6.1.4.1.171.10.97.2.21.1.2.1.3	Integer32	read-only	The number of slots exists on the device.
INT myDevicePowerStatusEx	1.3.6.1.4.1.171.10.97.2.21.1.2.1.4	INTEGER	read-only	The power status of device
MAC myDeviceMacAddress	1.3.6.1.4.1.171.10.97.2.21.1.2.1.5	MacAddress	read-only	The physical address of device
I32 myDevicePriority	1.3.6.1.4.1.171.10.97.2.21.1.2.1.6	Integer32	read-write	The device priority value
STR myDeviceAlias	1.3.6.1.4.1.171.10.97.2.21.1.2.1.7	DisplayString	read-write	Alias of the device.
STR myDeviceSWVersion	1.3.6.1.4.1.171.10.97.2.21.1.2.1.8	DisplayString	read-only	Description of the device.
STR myDeviceHWVersion	1.3.6.1.4.1.171.10.97.2.21.1.2.1.9	DisplayString	read-only	Description of the device.
mySlotInfoTable	1.3.6.1.4.1.171.10.97.2.21.1.3		not-accessible	a list of module Entries.
mySlotInfoEntry	1.3.6.1.4.1.171.10.97.2.21.1.3.1		not-accessible	Entry containing status information about one slot.
I32 mySlotInfoDeviceIndex	1.3.6.1.4.1.171.10.97.2.21.1.3.1.1	Integer32	read-only	The index of the device, that the slot exists on.
I32 mySlotInfoIndex	1.3.6.1.4.1.171.10.97.2.21.1.3.1.2	Integer32	read-only	A unique value for each slot exist on the device specified by the field mySlotInfoDeviceIndex, Its value ranges between 1 and the value of the solt num of this device.
STR mySlotModuleInfoDescr	1.3.6.1.4.1.171.10.97.2.21.1.3.1.3	DisplayString	read-only	Descriptions for the module in the Slot. just like 's1902m' etc. It is a unique value for identifing a kind of module.This value will be null string if slot is empty is NULL
I32 mySlotInfoPortNumber	1.3.6.1.4.1.171.10.97.2.21.1.3.1.4	Integer32	read-only	Number of ports on this slot.This value will be 0 if slot is empty
I32 mySlotInfoPortMaxNumber	1.3.6.1.4.1.171.10.97.2.21.1.3.1.5	Integer32	read-only	Max number of ports on this slot has possibly.
STR mySlotInfoDesc	1.3.6.1.4.1.171.10.97.2.21.1.3.1.6	DisplayString	read-only	Description of the slot,the same as the pannel show.
myModuleTempStateTable	1.3.6.1.4.1.171.10.97.2.21.1.4		not-accessible	Table of entrance to module temperature state table.
myModuleTempStateEntry	1.3.6.1.4.1.171.10.97.2.21.1.4.1		not-accessible	Entrance to module temperature state.
I32 myModuleTempStateDeviceIndex	1.3.6.1.4.1.171.10.97.2.21.1.4.1.1	Integer32	read-only	The index number for the device which the module is in.
I32 myModuleTempStateIndex	1.3.6.1.4.1.171.10.97.2.21.1.4.1.2	Integer32	read-only	The module index number, ranging from 1 to the maximal slot number.
INT myModuleTempState	1.3.6.1.4.1.171.10.97.2.21.1.4.1.3	INTEGER	read-only	The module temperature state.
myPowerStateTable	1.3.6.1.4.1.171.10.97.2.21.1.5		not-accessible	Table of entrance to the power state.
myPowerStateEntry	1.3.6.1.4.1.171.10.97.2.21.1.5.1		not-accessible	Entrance to the power state.
I32 myPowerStateDeviceIndex	1.3.6.1.4.1.171.10.97.2.21.1.5.1.1	Integer32	read-only	The index number for the device which the power is in.
I32 myPowerStateIndex	1.3.6.1.4.1.171.10.97.2.21.1.5.1.2	Integer32	read-only	The power index number.
INT myPowerState	1.3.6.1.4.1.171.10.97.2.21.1.5.1.3	INTEGER	read-only	Power state.
STR myPowerStatePowerDescr	1.3.6.1.4.1.171.10.97.2.21.1.5.1.4	DisplayString	read-only	Description of the power.
myFanStateTable	1.3.6.1.4.1.171.10.97.2.21.1.6		not-accessible	Table of entrance to the fan state.
myFanStateEntry	1.3.6.1.4.1.171.10.97.2.21.1.6.1		not-accessible	Entrance to the fan state.
I32 myFanStateDeviceIndex	1.3.6.1.4.1.171.10.97.2.21.1.6.1.1	Integer32	read-only	The index number for the device which the fan is in.
I32 myFanStateIndex	1.3.6.1.4.1.171.10.97.2.21.1.6.1.2	Integer32	read-only	Fan index number.
INT myFanState	1.3.6.1.4.1.171.10.97.2.21.1.6.1.3	INTEGER	read-only	Fan state.
STR myFanStateFanDescr	1.3.6.1.4.1.171.10.97.2.21.1.6.1.4	DisplayString	read-only	Description of the fan.
myEntityMIBTraps	1.3.6.1.4.1.171.10.97.2.21.2
STR myEntityStateChgDesc	1.3.6.1.4.1.171.10.97.2.21.2.1	DisplayString	accessible-for-notify	The description of entity change.
NTF myEntityStatusChange	1.3.6.1.4.1.171.10.97.2.21.2.2			while status of the entity changed, then this trap will be sent.
STR myTemperatureWarningDesc	1.3.6.1.4.1.171.10.97.2.21.2.3	DisplayString	accessible-for-notify	Description on the temperature state changes.
NTF myTemperatureWarning	1.3.6.1.4.1.171.10.97.2.21.2.4			When the temperature state of this module changes, this Trap will be sent.
myDeviceMIBConformance	1.3.6.1.4.1.171.10.97.2.21.3
myDeviceMIBCompliances	1.3.6.1.4.1.171.10.97.2.21.3.1
myDeviceMIBCompliance	1.3.6.1.4.1.171.10.97.2.21.3.1.1			The compliance statement for entities which implement the My Device MIB
myDeviceMIBGroups	1.3.6.1.4.1.171.10.97.2.21.3.2
myDeviceInfoMIBGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.1			A collection of objects providing device information to a My agent.
myOptionalDevInfoMIBGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.2			A collection of objects providing optional device information to a My agent.
myModuleInfoMIBGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.3			A collection of objects providing module information to a My agent.
myEntityChgDescGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.4			Objects that providing a literal description of entity's change.
myDeviceMIBNotificationGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.5			The collection of notifications which used to inform entity general status information
myModuleTempStateGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.6			Collection of information on temperature state.
myPowerStateGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.7			Collection of information on power state.
myFanStateGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.8			Collection of information on fan state.
myTemperatureWarningDescGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.9			Collection of description on temperature change notification.
myTemperatureWarningGroup	1.3.6.1.4.1.171.10.97.2.21.3.2.10			Collection of temperature change notification.

RFC description

Enterprise-specific MIB that extends the standard ENTITY-MIB (RFC 4133) to represent multiple logical and physical entities managed by a single SNMP agent, including chassis, boards, and power supplies.

Start monitoring D-Link managed/stackable switch (hardware entity inventory) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download MY-ENTITY-MIB