ENVIRONMENT-MIB

All MIBs › ENVIRONMENT-MIB

Organization: Nortel Networks

Last Updated: 2000-08-18

Category: Domain: Environmental Monitoring, Domain: Power/UPS

Description: Generic environment monitoring MIB providing management objects for temperature, humidity, and power supply sensor status.

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What Is ENVIRONMENT-MIB?

ENVIRONMENT-MIB is a vendor environment-monitoring MIB (the 'nnenv' object prefix suggests a Nortel/Bay-Networks-style implementation) providing generic management objects for a device's physical environmental sensors. It exposes temperature sensor readings and state, a fan table with per-unit fan state, and a power-supply table tracking installation status and power-fail event counts. Its entire purpose is hardware health monitoring: temperature sensor value/state for overheating detection, fan operational state for cooling-system faults, and power supply installed/fail status for power-redundancy monitoring, plus notifications so these conditions can trigger traps. No specific dependency on another standard MIB is stated in the (largely blank) module description, though it follows the common vendor pattern of environment MIBs paired with a chassis/entity MIB. It is deployed on networking hardware (switches/routers) where physical environmental health needs to be tracked for early failure detection. Engineers can download the ENVIRONMENT-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in ENVIRONMENT-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

Networking chassis with environmental sensors (switches/routers), vendor pattern suggests Nortel/Bay Networks-derived equipment

Monitoring Examples

An admin would poll nnenvTempSensorValue and nnenvTempSensorState to detect an overheating condition before it causes a shutdown, and walk nnenvFanTable/nnenvFanEntry checking nnenvFanState per nnenvFanUnitIndex to spot a failed cooling fan. nnenvPwrsupTable/nnenvPwrsupEntry with nnenvPwrsupInstalled confirms redundant power supplies are present, while a rising nnenvPwrsupPowerFailCount would reveal intermittent power issues on a supply. These objects combined with nnenvNotifications let an admin be alerted immediately rather than discovering a fan or PSU failure only after a subsequent outage.

What Can Be Monitored

temperature sensor value and state
fan operational state per unit
power supply installed status
power supply failure count
environmental fault notifications

Imported Objects

From NT-ENTERPRISE-DATA-MIB

ntEnterpriseDataTasmanMgmt

OBJECT-IDENTITY

From SNMPv2-CONF

NOTIFICATION-GROUP

From SNMPv2-SMI

Gauge32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using nnenvTempSensorValue OID:

Select a Nortel/Bay Networks-derived networking chassis (environmental sensors) 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 nnenvTempSensorValue into the Find box to locate it in the OID tree, then select it and click OK. The Average value of the temperature sensors. 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 a Gauge32-type OID, Value bounds is the most useful condition here — trigger an alert if the reported value exceeds the level expected for healthy operation, since sustained high temperature often precedes thermal shutdown or hardware degradation. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
nnenvironmentMib	1.3.6.1.4.1.562.73.1.1.1.3
nnenvObjects	1.3.6.1.4.1.562.73.1.1.1.3.1
nnenvTempSensorGroup	1.3.6.1.4.1.562.73.1.1.1.3.1.1
G32 nnenvTempSensorValueEx	1.3.6.1.4.1.562.73.1.1.1.3.1.1.1	Gauge32	read-only	The Average value of the temperature sensors.
ENV nnenvTempSensorState	1.3.6.1.4.1.562.73.1.1.1.3.1.1.2	EnvState	read-only	The Average status of the temperature sensors.
nnenvFanTable	1.3.6.1.4.1.562.73.1.1.1.3.1.2		not-accessible	A list of fan unit entries.
nnenvFanEntry	1.3.6.1.4.1.562.73.1.1.1.3.1.2.1		not-accessible	Entry containing information about a fan within the chassis.
INT nnenvFanUnitIndex	1.3.6.1.4.1.562.73.1.1.1.3.1.2.1.1	INTEGER	accessible-for-notify	The index to access an entry in the table.
ENV nnenvFanState	1.3.6.1.4.1.562.73.1.1.1.3.1.2.1.2	EnvState	read-only	The current state of fan 0, normal/fail.
I32 nnenvPwrsupPowerFailCount	1.3.6.1.4.1.562.73.1.1.1.3.1.3	Integer32	read-only	Number of failures of either power supply since boot-up.
nnenvPwrsupTable	1.3.6.1.4.1.562.73.1.1.1.3.1.4		not-accessible	A list of power supply status information.
nnenvPwrsupEntry	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1		not-accessible	Entry containing power supply information.
INT nnenvPwrsupIndex	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.1	INTEGER	accessible-for-notify	Index to access entry.
ENV nnenvPwrsupInstalled	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.2	EnvInstalled	read-only	Power supply installed flag.
ENV nnenvPwrsupStatus	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.3	EnvStatus	read-only	Power supply up/down status.
ENV nnenvPwrsupType	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.4	EnvType	read-only	Power supply type.
I32 nnenvPwrsupUptime	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.5	Integer32	read-only	Seconds since power supply came up.
I32 nnenvPwrsupDowntime	1.3.6.1.4.1.562.73.1.1.1.3.1.4.1.6	Integer32	read-only	Seconds since power supply went down.
nnenvNotificationEnables	1.3.6.1.4.1.562.73.1.1.1.3.2
T/F nnenvEnableTemperatureNotification	1.3.6.1.4.1.562.73.1.1.1.3.2.1	TruthValue	read-write	Indicates whether the system produces the envTemperatureNotification. The default is yes. Note: implementation is TBD.
T/F nnenvEnableFanNotification	1.3.6.1.4.1.562.73.1.1.1.3.2.2	TruthValue	read-write	Indicates whether the system produces the envFanNotification. The default is yes.
T/F nnenvEnablePowerNotification	1.3.6.1.4.1.562.73.1.1.1.3.2.3	TruthValue	read-write	Indicates whether the system produces the envPowerNotification. The default is yes.
nnenvNotifications	1.3.6.1.4.1.562.73.1.1.1.3.3
nnenvTraps	1.3.6.1.4.1.562.73.1.1.1.3.3.0
NTF nnenvTemperatureNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.1			An envTemeratureNotification is sent if the environmental monitoring detects that the temperature is at a critical state. This may cause the system to shut down. This notification is sent only if envEnableTemperatureNotification is set to true.
NTF nnenvFanNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.2			An envFanNotification is sent if the environmental monitoring detects that a fan is in a critical state. This may cause the system to shut down. This notification is sent only if envEnableFanNotification is set to true.
NTF nnenvPowerSupply1DownNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.3			An envPowerNotification is sent if the environmental monitoring detects that a power supply has changed status. This notification is sent only if envEnablePowerNotification is set to true.
NTF nnenvPowerSupply1UpNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.4			An envPowerNotification is sent if the environmental monitoring detects that a power supply has changed status. This notification is sent only if envEnablePowerNotification is set to true.
NTF nnenvPowerSupply2DownNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.5			An envPowerNotification is sent if the environmental monitoring detects that a power supply has changed status. This notification is sent only if envEnablePowerNotification is set to true.
NTF nnenvPowerSupply2UpNotification	1.3.6.1.4.1.562.73.1.1.1.3.3.0.6			An envPowerNotification is sent if the environmental monitoring detects that a power supply has changed status. This notification is sent only if envEnablePowerNotification is set to true.
nnenvironementNotificationGroup	1.3.6.1.4.1.562.73.1.1.1.3.4			THE Envrionment MIB Notification Group

RFC description

Nortel Networks environment monitoring MIB for power supply, cooling, and device environmental status.

Start monitoring Nortel/Bay Networks-derived networking chassis (environmental sensors) 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 ENVIRONMENT-MIB