VMWARE-ENV-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › VMWARE-ENV-MIB

Organization: VMware, Inc

Last Updated: 2010-05-12

Category: Hardware and Environment

Description: Defines variables and trap types for reporting the state of physical hardware components on ESXi hosts, using CIM indications or IPMI sensors for environmental monitoring.

Start monitoring vendor-neutral, standards-based MIB, any SNMPv3-capable network device (SNMP engine identity/boot/clock 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.

What Is VMWARE-ENV-MIB?

VMWARE-ENV-MIB is VMware's vendor-private MIB (under vmwProductSpecific) for ESXi/ESX host physical hardware environmental monitoring, sourced from IPMI sensors and the ESX CIM (Common Information Model) subsystem. It exposes the legacy vmwEnvTable (vmwSubsystemType, vmwHardwareStatus, vmwEventDescription) alongside newer CIM-alert objects (vmwEnvPerceivedSeverity, vmwEnvAlertType, vmwEnvSysCreationClassName, vmwEnvAlertingElement) and counters tracking the CIM-to-SNMP translation pipeline (vmwEnvInIndications, vmwEnvOutNotifications, vmwEnvInErrs, vmwEnvIndOidErrs, vmwEnvCvtValueErrs). A family of ESX-specific notifications (vmwESXEnvBatteryAlert, vmwESXEnvChassisAlert, vmwESXEnvThermalAlert, vmwESXEnvDiskAlert, vmwESXEnvPowerAlert, vmwESXEnvProcessorAlert, vmwESXEnvMemoryAlert, vmwESXEnvBIOSAlert) reports specific hardware subsystem faults. This is useful for monitoring physical server health beneath the hypervisor layer, catching hardware failures before they cause VM outages, and it depends on the underlying ESX CIM providers/IPMI sensors being correctly enumerated; it is deployed on VMware ESX/ESXi hosts, and administrators can download the VMWARE-ENV-MIB file to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in VMWARE-ENV-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

  • VMware ESX/ESXi hosts

Monitoring Examples

An operator polls vmwEnvSource to confirm the ESX host is deriving hardware status from CIM indications rather than sensors, and watches for vmwEnvInErrs or vmwEnvCvtValueErrs incrementing, which would indicate the CIM-to-SNMP translation pipeline is failing to report real battery, thermal, or power alerts represented by the vmwESXEnvBatteryAlert and vmwESXEnvPowerAlert traps.

What Can Be Monitored

  • CIM-to-SNMP indication translation counters
  • hardware subsystem alert traps (battery, chassis, thermal, disk, power, CPU, memory, BIOS)
  • legacy vmwEnvTable hardware status entries
  • CIM indication source configuration (sensors vs. indications)
  • alert severity and alerting-element identification
Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DateAndTime
DisplayString

From VMWARE-PRODUCTS-MIB

vmwESXOBJECT-IDENTITY

From VMWARE-ROOT-MIB

vmwNotificationsOBJECT-IDENTITY
vmwProductSpecificOBJECT-IDENTITY

From VMWARE-TC-MIB

VmwCIMAlertFormat
VmwCIMAlertTypes
VmwCIMSeverity
VmwCimName
VmwLongSnmpAdminString
VmwSubsystemStatus
VmwSubsystemTypes

How to Use in IPNetwork Monitor

Example using vmwEnvInIndications OID:

Select a VMware ESX/ESXi host (IPMI/CIM hardware-subsystem alert status) 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 vmwEnvInIndications into the Find box to locate it in the OID tree, then select it and click OK. It reports the number of HTTP POST msgs containing CIM Indications in XML as received by agent. 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 Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline, since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

Monitors VMware ESX server environmental hardware components including IPMI sensors, temperature, and power.

Start monitoring VMware ESX/ESXi hosts (IPMI/CIM hardware-subsystem alert 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 VMWARE-ENV-MIB