All MIBs › Dell-HWENVIROMENT
Organization: Dell
Last Updated: 2003-09-21
Category: Domain: Power Management, Domain: Server Hardware, Vendor: Dell
Description:
Monitors hardware environmental sensors including temperature, fans, and power supplies on Dell devices.
Imported Objects
From Dell-MIB
| rnd | MODULE-IDENTITY |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE |
From SNMPv2-TC
| DisplayString | |
| TEXTUAL-CONVENTION |
What Is Dell-HWENVIROMENT?
Dell-HWENVIROMENT is a Dell proprietary MIB dedicated to monitoring the physical hardware environment of Dell network devices, covering cooling fans and power supply units. It exposes per-fan and per-power-supply status tables describing each unit's operational state, along with supply source and airflow direction details. Its primary purpose is directly monitoring hardware health, specifically fan operational status and power supply state and source (e.g. AC/DC, redundant supply presence), which are critical early-warning indicators for overheating or power redundancy loss on a switch. It is a self-contained vendor MIB, though it parallels the environment-monitoring style of the standard CISCO-ENVMON-MIB/ENTITY-MIB pattern used across the industry. It is deployed on Dell PowerConnect/Networking switch chassis, where Dell-HWENVIROMENT SNMP monitoring alerts operators to fan failures or power supply degradation before they cause a thermal shutdown or outage.
IPNetwork Monitor allows you to monitor SNMP objects defined in Dell-HWENVIROMENT. 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.
What Can Be Monitored
- fan operational status
- fan description/identity
- power supply status
- power supply source (AC/DC)
- power supply fan airflow direction
Supported Devices
- Dell PowerConnect/Networking switch (chassis with fans/power supplies)
Monitoring Examples
An operator would poll rlEnvMonFanStatusTable/rlEnvMonFanStatusEntry (indexed by rlEnvMonFanStatusIndex) checking rlEnvMonFanState to detect a failed or degraded cooling fan identified by rlEnvMonFanStatusDescr, and similarly check rlEnvMonSupplyStatusTable/rlEnvMonSupplyStatusEntry for rlEnvMonSupplyState and rlEnvMonSupplySource to confirm a redundant power supply is present and healthy. A fan reporting a failed state combined with rising chassis temperature (tracked elsewhere) would be an early signal to schedule hardware replacement before thermal shutdown.
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| rlEnv | 1.3.6.1.4.1.89.83 | The private MIB module definition for environment of Dell devices. | ||
| rlEnvPhysicalDescription | 1.3.6.1.4.1.89.83.1 | |||
| rlEnvMonFanStatusTable | 1.3.6.1.4.1.89.83.1.1 | not-accessible | The table of fan status maintained by the environmental monitor. | |
| rlEnvMonFanStatusEntry | 1.3.6.1.4.1.89.83.1.1.1 | not-accessible | An entry in the fan status table, representing the status of the associated fan maintained by the environmental monitor. | |
| INT rlEnvMonFanStatusIndex | 1.3.6.1.4.1.89.83.1.1.1.1 | INTEGER | not-accessible | Unique index for the fan being instrumented. This index is for SNMP purposes only, and has no intrinsic meaning. |
| STR rlEnvMonFanStatusDescr | 1.3.6.1.4.1.89.83.1.1.1.2 | DisplayString | read-only | Textual description of the fan being instrumented. This description is a short textual label, suitable as a human-sensible identification for the rest of the information in the entry. |
| RLE rlEnvMonFanState | 1.3.6.1.4.1.89.83.1.1.1.3 | RlEnvMonState | read-only | The mandatory state of the fan being instrumented. |
| rlEnvMonSupplyStatusTable | 1.3.6.1.4.1.89.83.1.2 | not-accessible | The table of power supply status maintained by the environmental monitor card. | |
| rlEnvMonSupplyStatusEntry | 1.3.6.1.4.1.89.83.1.2.1 | not-accessible | An entry in the power supply status table, representing the status of the associated power supply maintained by the environmental monitor card. | |
| INT rlEnvMonSupplyStatusIndex | 1.3.6.1.4.1.89.83.1.2.1.1 | INTEGER | not-accessible | Unique index for the power supply being instrumented. This index is for SNMP purposes only, and has no intrinsic meaning. |
| STR rlEnvMonSupplyStatusDescr | 1.3.6.1.4.1.89.83.1.2.1.2 | DisplayString | read-only | Textual description of the power supply being instrumented. This description is a short textual label, suitable as a human-sensible identification for the rest of the information in the entry. |
| RLE rlEnvMonSupplyState | 1.3.6.1.4.1.89.83.1.2.1.3 | RlEnvMonState | read-only | The mandatory state of the power supply being instrumented. |
| INT rlEnvMonSupplySource | 1.3.6.1.4.1.89.83.1.2.1.4 | INTEGER | read-only | The power supply source. unknown - Power supply source unknown ac - AC power supply dc - DC power supply externalPowerSupply - External power supply internalRedundant - Internal redundant power supply |
| RLE rlEnvMonSupplyFanDirection | 1.3.6.1.4.1.89.83.1.2.1.5 | RlEnvMonDirection | read-only | The direction of the power supply's fan. |
| rlEnvFanData | 1.3.6.1.4.1.89.83.5 | |||
| rlEnvFanDataTable | 1.3.6.1.4.1.89.83.5.1 | not-accessible | For each unit in a stack | |
| rlEnvFanDataEntry | 1.3.6.1.4.1.89.83.5.1.1 | not-accessible | An entry of this table specifies a unit | |
| INT rlEnvFanDataStackUnit | 1.3.6.1.4.1.89.83.5.1.1.1 | INTEGER | read-only | The number of the stack unit |
| INT rlEnvFanDataTemp | 1.3.6.1.4.1.89.83.5.1.1.2 | INTEGER | read-only | The unit temperature |
| INT rlEnvFanDataSpeed | 1.3.6.1.4.1.89.83.5.1.1.3 | INTEGER | read-only | Fan speed in RPM |
| INT rlEnvFanDataOperLevel | 1.3.6.1.4.1.89.83.5.1.1.4 | INTEGER | read-only | Fan speed operative level |
| INT rlEnvFanDataAdminLevel | 1.3.6.1.4.1.89.83.5.1.1.5 | INTEGER | read-write | Configured fan speed level |
| RLE rlEnvFanDataDirection | 1.3.6.1.4.1.89.83.5.1.1.6 | RlEnvMonDirection | read-only | The direction of the system's fan. |
RFC description
Monitors environmental conditions on Dell devices, including temperature sensors, fan status, and power supply states.
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