AT-ENVMON-MIB

All MIBs › AT-ENVMON-MIB

Organization: Allied Telesis, Inc

Last Updated: 2006-03-07

Category: Hardware and Environment, Vendor: Allied Telesis

Description: Monitors environmental sensors including temperature, fan speed, and power supply status on Allied Telesis switches.

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What Is AT-ENVMON-MIB?

AT-ENVMON-MIB is an Allied Telesis-proprietary Environment Monitoring MIB used to report physical environmental conditions on Allied Telesis switches. It exposes sensor data covering voltage rail readings, fan speed(s), temperature sensor readings, and power supply unit status. This is fundamentally a hardware-health monitoring MIB: it is used to detect overheating, fan failure, voltage rail deviations, and power supply faults, all leading indicators of impending hardware failure in a switch chassis. As a private enterprise MIB it has no dependency on IETF standards, though it fills the same functional role as the more general-purpose ENTITY-SENSOR-MIB used by other vendors. It is deployed on Allied Telesis switches in enterprise and data center environments where administrators need proactive alerts on cooling, power, and voltage health to prevent unplanned hardware outages. Engineers can download the AT-ENVMON-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in AT-ENVMON-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

Allied Telesis switches

Monitoring Examples

No sample objects were extracted for this module in the source, so specific object names cannot be confirmed, but consistent with its stated purpose an administrator would poll per-sensor temperature and fan-speed readings alongside power supply and voltage-rail status objects for the switch chassis. A temperature reading trending upward alongside a fan speed reading dropping to zero would be a clear pre-failure signal of a fan malfunction risking thermal shutdown, and a power supply status changing from normal to failed would trigger an immediate hardware-fault alert.

What Can Be Monitored

temperature sensor readings
fan speed
voltage rail readings
power supply unit status

Imported Objects

From AT-SMI-MIB

DisplayStringUnsized

From AT-SYSINFO-MIB

sysinfo

MODULE-IDENTITY

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-SMI

MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
Unsigned32
enterprises

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using envMonVoltageCurrent OID:

Select an Allied Telesis managed switch or router 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 envMonVoltageCurrent 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 current reading of this voltage rail in millivolts. 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 reading drifts outside the range expected for healthy operation, since an unexpected voltage swing often points to a power-supply or wiring issue. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
envMon	1.3.6.1.4.1.207.8.4.4.3.10			The AT Environment Monitoring MIB for managing and reporting data relating to voltage rails, fan speeds, temperature sensors and power supply units.
envMonFanTable	1.3.6.1.4.1.207.8.4.4.3.10.1		not-accessible	A table of fans installed in the device that have their fan speeds monitored by environment monitoring hardware.
envMonFanEntry	1.3.6.1.4.1.207.8.4.4.3.10.1.1		not-accessible	The description, current speed, lower threshold speed and current status of a fan.
U32 envMonFanBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.1.1.1	Unsigned32	read-only	The index of the board hosting this fan in the board table.
U32 envMonFanIndex	1.3.6.1.4.1.207.8.4.4.3.10.1.1.2	Unsigned32	read-only	The numeric identifier of this fan within the context of its host board.
STR envMonFanDescription	1.3.6.1.4.1.207.8.4.4.3.10.1.1.3	DisplayStringUnsized	read-only	The text description of this fan.
U32 envMonFanCurrentSpeed	1.3.6.1.4.1.207.8.4.4.3.10.1.1.4	Unsigned32	read-only	The current speed of this fan in revolutions per minute.
U32 envMonFanLowerThreshold	1.3.6.1.4.1.207.8.4.4.3.10.1.1.5	Unsigned32	read-write	The minimum acceptable speed of the fan (in revolutions per minute).
T/F envMonFanAlarm	1.3.6.1.4.1.207.8.4.4.3.10.1.1.6	TruthValue	read-only	An indication of whether this fan is currently in an alarm condition. A value of TRUE indicates that its current speed is too low, FALSE indicates that the current speed is acceptable.
envMonVoltageTable	1.3.6.1.4.1.207.8.4.4.3.10.2		not-accessible	A table of voltage rails in the device that are monitored by environment monitoring hardware.
envMonVoltageEntry	1.3.6.1.4.1.207.8.4.4.3.10.2.1		not-accessible	The description, current value, upper & lower threshold settings and current status of a voltage rail.
U32 envMonVoltageBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.2.1.1	Unsigned32	read-only	The index of the board hosting this voltage sensor in the board table.
U32 envMonVoltageIndex	1.3.6.1.4.1.207.8.4.4.3.10.2.1.2	Unsigned32	read-only	The numeric identifier of this voltage rail within the context of its host board.
STR envMonVoltageDescription	1.3.6.1.4.1.207.8.4.4.3.10.2.1.3	DisplayStringUnsized	read-only	The text description of this voltage rail.
INT envMonVoltageCurrentEx	1.3.6.1.4.1.207.8.4.4.3.10.2.1.4	INTEGER	read-only	The current reading of this voltage rail in millivolts.
INT envMonVoltageUpperThreshold	1.3.6.1.4.1.207.8.4.4.3.10.2.1.5	INTEGER	read-write	The maximum acceptable reading of this voltage rail in millivolts.
INT envMonVoltageLowerThreshold	1.3.6.1.4.1.207.8.4.4.3.10.2.1.6	INTEGER	read-write	The minimum acceptable reading of this voltage rail in millivolts.
T/F envMonVoltageAlarm	1.3.6.1.4.1.207.8.4.4.3.10.2.1.7	TruthValue	read-only	An indication of whether this voltage rail is currently in an alarm condition. A value of TRUE indicates that its current reading is outside its threshold range, FALSE indicates that the current reading is acceptable.
envMonTemperatureTable	1.3.6.1.4.1.207.8.4.4.3.10.3		not-accessible	A table of temperature sensors in the device that are monitored by environment monitoring hardware.
envMonTemperatureEntry	1.3.6.1.4.1.207.8.4.4.3.10.3.1		not-accessible	The description, current value, upper threshold setting and current status of a temperature sensor.
U32 envMonTemperatureBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.3.1.1	Unsigned32	read-only	The index of the board hosting this temperature sensor in the board table.
U32 envMonTemperatureIndex	1.3.6.1.4.1.207.8.4.4.3.10.3.1.2	Unsigned32	read-only	The numeric identifier of this temperature sensor within the context of its host board.
STR envMonTemperatureDescription	1.3.6.1.4.1.207.8.4.4.3.10.3.1.3	DisplayStringUnsized	read-only	The text description of this temperature sensor.
INT envMonTemperatureCurrent	1.3.6.1.4.1.207.8.4.4.3.10.3.1.4	INTEGER	read-only	The current reading of this temperature sensor in tenths of a degree Celcius.
INT envMonTemperatureUpperThreshold	1.3.6.1.4.1.207.8.4.4.3.10.3.1.5	INTEGER	read-write	The maximum acceptable reading of this temperature sensor in tenths of a degree Celcius.
T/F envMonTemperatureAlarm	1.3.6.1.4.1.207.8.4.4.3.10.3.1.6	TruthValue	read-only	An indication of whether this temperature sensor is currently in an alarm condition. A value of TRUE indicates that its current reading is outside its threshold range, FALSE indicates that the current reading is acceptable.
envMonPsbObjects	1.3.6.1.4.1.207.8.4.4.3.10.4
envMonPsbTable	1.3.6.1.4.1.207.8.4.4.3.10.4.1		not-accessible	A table showing power supply bays in the system and info on any devices that are present.
envMonPsbEntry	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1		not-accessible	The description and current status of a power supply bay device.
U32 envMonPsbHostBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1.1	Unsigned32	read-only	The index of the board hosting this PSB in the board table.
U32 envMonPsbHostSlotIndex	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1.2	Unsigned32	read-only	The index of this PSB slot within the context of its host board. This index is fixed for each slot, on each type of board.
U32 envMonPsbHeldBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1.3	Unsigned32	read-only	The index of a board installed in this power supply bay. This value corresponds to envMonPsbSensorBoardIndex for each sensor on this board. A value of 0 indicates that a board is is either not present or not supported.
OID envMonPsbHeldBoardId	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1.4	OBJECT IDENTIFIER	read-only	The type of board installed in this power supply bay. The values of this object are taken from the pprXxx object IDs under the boards sub-tree in the parent MIB. A value of 0 indicates that a board is is either not present or not supported.
STR envMonPsbDescription	1.3.6.1.4.1.207.8.4.4.3.10.4.1.1.5	DisplayStringUnsized	read-only	The text description of this power supply bay.
envMonPsbSensorTable	1.3.6.1.4.1.207.8.4.4.3.10.4.2		not-accessible	A table of environment monitoring sensors on installed power supply bay devices.
envMonPsbSensorEntry	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1		not-accessible	The description and current status of a power supply bay device.
U32 envMonPsbSensorBoardIndex	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1.1	Unsigned32	read-only	The index of the board hosting this sensor in the board table.
U32 envMonPsbSensorIndex	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1.2	Unsigned32	read-only	The index of this power supply bay environmental sensor, within the context of its host board.
ENV envMonPsbSensorType	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1.3	EnvMonPsbSensorType	read-only	Indicates the type of environmental variable this sensor detects.
STR envMonPsbSensorDescription	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1.4	DisplayStringUnsized	read-only	The text description of this power supply bay environmental sensor.
T/F envMonPsbSensorAlarm	1.3.6.1.4.1.207.8.4.4.3.10.4.2.1.5	TruthValue	read-only	An indication of whether this environmental sensor is currently in an alarm condition. A value of TRUE indicates that the device is in a failure condition, FALSE indicates that the device is functioning normally.
envMonTraps	1.3.6.1.4.1.207.8.4.4.3.10.5
NTF envMonFanAlarmSetEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.1			Triggered when the monitored speed of a fan drops below its lower threshold.
NTF envMonFanAlarmClearedEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.2			Triggered when the monitored speed of a fan returns to an acceptable value, the fan having previously been in an alarm condition.
NTF envMonVoltAlarmSetEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.3			Triggered when the voltage of a monitored voltage rail, goes out of tolerance by either dropping below its lower threshold, or exceeding its upper threshold.
NTF envMonVoltAlarmClearedEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.4			Triggered when the voltage of a monitored voltage rail returns to an acceptable value, having previously been in an alarm condition.
NTF envMonTempAlarmSetEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.5			Triggered when a monitored temperature exceeds its upper threshold.
NTF envMonTempAlarmClearedEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.6			Triggered when a monitored temperature returns to an acceptable value, having previously been in an alarm condition.
NTF envMonPsbAlarmSetEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.7			Triggered when a monitored parameter of a power supply bay device goes out of tolerance.
NTF envMonPsbAlarmClearedEvent	1.3.6.1.4.1.207.8.4.4.3.10.5.8			Triggered when a monitored parameter of a power supply bay device returns to an acceptable value, having previously been in an alarm condition.

RFC description

Allied Telesis environment monitoring MIB for managing voltage rails, fan speeds, temperature sensors, and power supplies.

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Download AT-ENVMON-MIB