TN-ENTITY-SENSOR-MIB

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Organization: Transition Networks, Inc.

Last Updated: 2011-01-08

Category: Industrial and Sensor Devices, Transition Networks Media Converters

Description: Manages Transition Networks entity sensor values, type, and threshold configuration.

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What Is TN-ENTITY-SENSOR-MIB?

TN-ENTITY-SENSOR-MIB is a Transition Networks proprietary SNMP module extending environmental sensor monitoring for power supply and fan modules on their switch/media-converter hardware. It exposes sensor extension attributes (relay installed/enabled, module type, operational mode) and configurable alarm thresholds (severity, relational operator, threshold value) for sensor readings. This is explicitly a hardware health MIB: it lets an operator monitor power supply and fan module presence and operational state, and configure threshold-based alarms so the device raises a notification if a sensor reading crosses a defined severity threshold. It extends the standard IETF ENTITY-SENSOR-MIB, adding Transition Networks-specific relay and threshold configuration on top of the base sensor object model. It is deployed on Transition Networks managed switches and media converters, including in industrial/harsh-environment deployments where power and cooling health monitoring matters. Engineers can download the TN-ENTITY-SENSOR-MIB file directly to load it into their MIB browser.

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

Transition Networks managed Ethernet switches
Transition Networks media converters with power/fan monitoring

Monitoring Examples

An operator polls tnEntSensorExtTable/tnEntSensorExtEntry to check tnEntSensorExtModuleType and tnEntSensorExtOperMode for a power supply or fan module, confirming it reports as operational. The tnEntSensorThresholdTable/tnEntSensorThresholdEntry rows define alarm conditions (tnEntSensorThresholdSeverity, tnEntSensorThresholdRelation, tnEntSensorThresholdValue) per sensor index, so a fan-speed or temperature sensor crossing its configured threshold generates a tnEntitySensorMIBNotifications trap. Checking tnEntSensorExtRelayEnabled/tnEntSensorExtRelayInstalled confirms whether an external alarm relay is available to physically signal a hardware fault condition.

What Can Be Monitored

power supply and fan module operational status
sensor threshold alarm configuration (severity, value)
external alarm relay installed/enabled state

Imported Objects

From ENTITY-MIB

entPhysicalIndex

OBJECT-TYPE

From ENTITY-SENSOR-MIB

EntitySensorValue
entPhySensorValue	OBJECT-TYPE

From SNMPv2-CONF

NOTIFICATION-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TimeStamp
TruthValue

From TRANSITION-SMI

tnProducts

OBJECT-IDENTITY

OIDs

OID symbolic	OID numeric	Type	Access	Description
tnEntitySensorMIB	1.3.6.1.4.1.868.2.5.6			The mib module for managing all powersupply and fan modules.
tnEntitySensorMIBNotifications	1.3.6.1.4.1.868.2.5.6.0
NTF tnEntSensorThresholdNotification	1.3.6.1.4.1.868.2.5.6.0.1			The sensor value crossed the threshold listed in tnEntSensorThresholdTable. This notification is generated once each time the sensor value crosses the threshold. The agent implementation guarantees prompt, timely evaluation of threshold and generation of this notification.
tnEntitySensorMIBObjects	1.3.6.1.4.1.868.2.5.6.1
tnEntSensorValues	1.3.6.1.4.1.868.2.5.6.1.1
tnEntSensorExtTable	1.3.6.1.4.1.868.2.5.6.1.1.1		not-accessible	This table is an private extension of the public ENTITY-SENSOR-MIB entPhySensorTable.
tnEntSensorExtEntry	1.3.6.1.4.1.868.2.5.6.1.1.1.1		not-accessible	The entries list the unique properties of the ION Power supply module.
T/F tnEntSensorExtRelayInstalled	1.3.6.1.4.1.868.2.5.6.1.1.1.1.1	TruthValue	read-only	This variable indicates if the relay contact is installed on the power supply module or not.
T/F tnEntSensorExtRelayEnabled	1.3.6.1.4.1.868.2.5.6.1.1.1.1.2	TruthValue	read-write	This variable enables or disables the relay contact if it is installed (tnEntSensorExtRelayInstalled) in the power supply. This relay contact is used to trigger an event to the user by attaching an external indicator.
INT tnEntSensorExtModuleType	1.3.6.1.4.1.868.2.5.6.1.1.1.1.3	INTEGER	read-only	This variable indicates if the power supply is AC or DC module.
INT tnEntSensorExtOperMode	1.3.6.1.4.1.868.2.5.6.1.1.1.1.4	INTEGER	read-only	This variable indicates operational mode of the power supply when redundant modules exists.
tnEntSensorThresholds	1.3.6.1.4.1.868.2.5.6.1.2
tnEntSensorThresholdTable	1.3.6.1.4.1.868.2.5.6.1.2.1		not-accessible	This table lists the threshold severity, relation, and comparison value, for a sensor listed in the Entity-MIB EntPhysicalTable.
tnEntSensorThresholdEntry	1.3.6.1.4.1.868.2.5.6.1.2.1.1		not-accessible	An tnEntSensorThresholdTable Entry describes the thresholds for a sensor: the threshold severity, the threshold value, the relation, and the evaluation of the threshold. Only Entities of type sensor(8) are listed in this table. Only pre-configured thresholds are listed in this table. Users can create sensor-value monitoring instrumionEnts in differionEnt ways, such as RMON alarms, Expression-MIB, etc. Entries are created by the agionEnt at system startup and FRU insertion. Entries are deleted by the agionEnt at FRU removal.
I32 tnEntSensorThresholdIndex	1.3.6.1.4.1.868.2.5.6.1.2.1.1.1	Integer32	not-accessible	An index that uniquely identifies an entry in the tnEntSensorThresholdTable. This index permits the same sensor to have several different thresholds.
TNS tnEntSensorThresholdSeverity	1.3.6.1.4.1.868.2.5.6.1.2.1.1.2	TnSensorThresholdSeverity	read-write	This variable indicates the severity of this threshold.
TNS tnEntSensorThresholdRelation	1.3.6.1.4.1.868.2.5.6.1.2.1.1.3	TnSensorThresholdRelation	read-write	This variable indicates the relation between sensor value (entSensorValue) and threshold value (tnEntSensorThresholdValue), required to trigger the alarm. when evaluating the relation, entSensorValue is on the left of tnEntSensorThresholdRelation, tnEntSensorThresholdValue is on the right. in pseudo-code, the evaluation-alarm mechanism is: ... if (entSensorStatus == ok) then if (evaluate(entSensorValue, tnEntSensorThresholdRelation, tnEntSensorThresholdValue)) then if (tnEntSensorThresholdNotificationEnable == true)) then raise_alarm(sensor's entPhysicalIndex); endif endif endif ...
ENT tnEntSensorThresholdValue	1.3.6.1.4.1.868.2.5.6.1.2.1.1.4	EntitySensorValue	read-write	This variable indicates the value of the threshold. To correctly display or interpret this variable's value, you must also know entSensorType, entSensorScale, and entSensorPrecision. However, you can directly compare entSensorValue with the threshold values given in tnEntSensorThresholdTable without any semantic knowledge.
T/F tnEntSensorThresholdEvaluation	1.3.6.1.4.1.868.2.5.6.1.2.1.1.5	TruthValue	read-only	This variable indicates the result of the most recent evaluation of the threshold. If the threshold condition is true, tnEntSensorThresholdEvaluation is true(1). If the threshold condition is false, tnEntSensorThresholdEvaluation is false(2). Thresholds are evaluated at the rate indicated by entSensorValueUpdateRate.
T/F tnEntSensorThresholdNotificationEnable	1.3.6.1.4.1.868.2.5.6.1.2.1.1.6	TruthValue	read-write	This variable controls generation of tnEntSensorThresholdNotification for this threshold. When this variable is 'true', generation of tnEntSensorThresholdNotification is enabled for this threshold. When this variable is 'false', generation of tnEntSensorThresholdNotification is disabled for this threshold.
tnEntSensorGlobalObjects	1.3.6.1.4.1.868.2.5.6.1.3
T/F tnEntSensorThreshNotifGlobalEnable	1.3.6.1.4.1.868.2.5.6.1.3.1	TruthValue	read-write	This variable enables the generation of tnEntSensorThresholdNotification globally on the device. If this object value is 'false', then no tnEntSensorThresholdNotification will be generated on this device. If this object value is 'true', then whether a tnEntSensorThresholdNotification for a threshold will be generated or not depends on the instance value of tnEntSensorThresholdNotificationEnable for that threshold.
tnEntitySensorMIBConformance	1.3.6.1.4.1.868.2.5.6.2

RFC description

Manages power supply and fan modules with threshold-based sensor monitoring for network equipment.

Start monitoring Transition Networks managed Ethernet switches, media converters with power/fan monitoring (sensor presence/alarm-threshold status) 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 TN-ENTITY-SENSOR-MIB

What Is TN-ENTITY-SENSOR-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description