PDN-ENTITY-SENSOR-EXT-MIB

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Organization: Paradyne Networks MIB Working Group Other information about group editing the MIB

Last Updated: 2003-06-06

Category: Environmental Monitoring

Description: Extends standard ENTITY-SENSOR-MIB with Paradyne-specific threshold and alarm objects for temperature and voltage sensors.

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What Is PDN-ENTITY-SENSOR-EXT-MIB?

PDN-ENTITY-SENSOR-EXT-MIB is a Paradyne (PDN) proprietary supplement to the standard ENTITY-SENSOR-MIB (RFC 3433), placing it in the physical-environment monitoring technology area for Paradyne network access equipment. It adds threshold and alarm-notification objects — upper/lower thresholds, threshold state, and notification-enable flags — layered on top of the base sensor value objects supplied by ENTITY-SENSOR-MIB, typically for temperature and voltage sensors. This gives it a direct and explicit role in hardware health monitoring: it detects when a device's temperature or voltage sensor crosses a configured danger threshold and can raise a notification/trap, which is a core mechanism for early hardware fault detection. It has an explicit, stated dependency on ENTITY-SENSOR-MIB (RFC 3433), whose entPhySensorTable it extends rather than duplicates. It is typically deployed on Paradyne (Zhone) DSL and network access equipment equipped with onboard temperature/voltage sensors, where PDN-ENTITY-SENSOR-EXT-MIB SNMP monitoring provides the early-warning thresholds needed for hardware fault detection.

IPNetwork Monitor allows you to monitor SNMP objects defined in PDN-ENTITY-SENSOR-EXT-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

Paradyne (Zhone) network access equipment with ENTITY-SENSOR-MIB physical sensors

Monitoring Examples

An administrator would set pdnEntPhySensorExtUpperThreshold and pdnEntPhySensorExtLowerThreshold for a given sensor entry in pdnEntPhySensorExtTable, then poll pdnEntPhySensorExtThresholdState to see whether the sensor is currently within, above, or below the configured range. A transition of pdnEntPhySensorExtThresholdState to an out-of-range value alongside a pdnEntitySensorExtNotifications trap would indicate an overheating component or abnormal voltage condition requiring attention.

What Can Be Monitored

sensor upper/lower threshold configuration
threshold crossing state
temperature/voltage alarm notification enable
sensor fault/alarm status

Imported Objects

From ENTITY-SENSOR-MIB

EntitySensorValue
entPhySensorEntry	OBJECT-TYPE
entPhySensorValue	OBJECT-TYPE

From PDN-HEADER-MIB

pdn-common

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

How to Use in IPNetwork Monitor

Example using pdnEntPhySensorExtThresholdState OID:

Select a Paradyne (Zhone) network access equipment with ENTITY-SENSOR-MIB physical sensor 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 pdnEntPhySensorExtThresholdState 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. This object returns the threshold state of the sensor. 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 'noThresholdsExceeded', 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
pdnEntitySensorExtMIB	1.3.6.1.4.1.1795.2.24.2.45			This MIB module is a supplement to the ENTITY-SENSOR-MIB, RFC 3433.
pdnEntitySensorExtNotifications	1.3.6.1.4.1.1795.2.24.2.45.0
NTF pdnEntPhySensorExtThresholdExceededSet	1.3.6.1.4.1.1795.2.24.2.45.0.1			This trap/notification signifies that a sensor value has exceeded its threshold limit. i.e. its entPhySensorValue is greater than its pdnEntPhySensorExtUpperThreshold or less than its pdnEntPhySensorExtLowerThreshold.
NTF pdnEntPhySensorExtThresholdExceededCleared	1.3.6.1.4.1.1795.2.24.2.45.0.100			This trap/notification signifies that a sensor value that had exceeded its threshold limit, is now operating with in its threshold limits. i.e. its entPhySensorValue is less than or equal to its pdnEntPhySensorExtUpperThreshold and greater than or equal to its pdnEntPhySensorExtLowerThreshold.
pdnEntitySensorExtObjects	1.3.6.1.4.1.1795.2.24.2.45.1
pdnEntPhySensorExtTable	1.3.6.1.4.1.1795.2.24.2.45.1.1		not-accessible	This table extends the entPhySensorTable.
pdnEntPhySensorExtEntry	1.3.6.1.4.1.1795.2.24.2.45.1.1.1		not-accessible	An extended entry in the entPhySensorTable.
BIT pdnEntPhySensorExtNotificationEnable	1.3.6.1.4.1.1795.2.24.2.45.1.1.1.1	Bits	read-write	Provides that ability to enable and disable notifications relative to objects in this table. When this bit is set, pdnEntPhySensorExtThesholdExceededSet and pdnEntPhySensorExtThesholdExceededCleared notifications should be generated. When this bit is reset, pdnEntPhySensorExtThesholdExceededSet, and pdnEntPhySensorExtThesholdExceededCleared notifications should be not be generated.
ENT pdnEntPhySensorExtUpperThreshold	1.3.6.1.4.1.1795.2.24.2.45.1.1.1.2	EntitySensorValue	read-write	This object sets the upper limit of a sensor's threshold. When the value of entPhySensorValue becomes greater than the value of this object, an 'Upper Threshold Exceeded' state is entered.
ENT pdnEntPhySensorExtLowerThreshold	1.3.6.1.4.1.1795.2.24.2.45.1.1.1.3	EntitySensorValue	read-write	This object sets the lower limit of a sensor's threshold. When the value of entPhySensorValue becomes less than the value of this object, a 'Lower Threshold Exceeded' state is entered.
INT pdnEntPhySensorExtThresholdStateEx	1.3.6.1.4.1.1795.2.24.2.45.1.1.1.4	INTEGER	read-only	This object returns the threshold state of the sensor.
pdnEntitySensorExtAFNs	1.3.6.1.4.1.1795.2.24.2.45.2
pdnEntitySensorExtConformance	1.3.6.1.4.1.1795.2.24.2.45.3
pdnEntitySensorExtCompliances	1.3.6.1.4.1.1795.2.24.2.45.3.1
pdnEntitySensorExtMIBCompliance	1.3.6.1.4.1.1795.2.24.2.45.3.1.1			The compliance statement for pdnEntitySensorExt entities which implement the pdnEntitySensorExtMIB.
pdnEntitySensorExtGroups	1.3.6.1.4.1.1795.2.24.2.45.3.2
pdnEntitySensorExtObjGroups	1.3.6.1.4.1.1795.2.24.2.45.3.2.1
pdnEntitySensorExtThresholdGroup	1.3.6.1.4.1.1795.2.24.2.45.3.2.1.1			A collection of objects for setting and reporting thresholds.
pdnEntitySensorExtAfnGroups	1.3.6.1.4.1.1795.2.24.2.45.3.2.2
pdnEntitySensorExtNtfyGroups	1.3.6.1.4.1.1795.2.24.2.45.3.2.3
pdnEntitySensorExtThresholdNtfyGroup	1.3.6.1.4.1.1795.2.24.2.45.3.2.3.1			Notifications relative to thresholds going out of or in to specification.

RFC description

Supplements the ENTITY-SENSOR-MIB with extended sensor notification and configuration capabilities for Paradyne devices.

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