OLD-CISCO-ENV-MIB

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Category: Legacy Cisco IOS

Description: Provides legacy Cisco IOS environmental temperature and voltage monitoring from early Cisco IOS versions.

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 OLD-CISCO-ENV-MIB?

OLD-CISCO-ENV-MIB is a legacy Cisco enterprise MIB providing environmental monitoring objects -- temperature and voltage readings -- for early Cisco IOS-based routers and switches, predating Cisco's later, more comprehensive CISCO-ENVMON-MIB. No object names were supplied in this batch, but by design such legacy environmental MIBs expose per-component temperature test points and power supply voltage status for the chassis. Its entire purpose is hardware status monitoring: detecting an overheating chassis or a failing power supply/voltage rail before it causes a device outage, on devices where more modern entity-based environmental MIBs are not available. It is superseded by (and has no formal dependency on) later standard MIBs like ENTITY-MIB or CISCO-ENVMON-MIB, existing purely as Cisco's early proprietary implementation. It is deployed on older Cisco IOS routers/switches that only support the legacy environmental object set. Engineers can download the OLD-CISCO-ENV-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in OLD-CISCO-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

legacy Cisco IOS router/switch (early platforms)

Monitoring Examples

An operator would poll the legacy temperature and voltage-status objects (per the module's naming convention) to confirm the chassis is running within its normal thermal and power envelope. A temperature reading crossing its warning or critical threshold, or a voltage status object reporting other than "normal," would indicate an environmental fault requiring physical inspection of the device's cooling or power supply. Because no object names were available in this batch, exact object names cannot be confirmed and this description reflects the module's known general purpose.

What Can Be Monitored

chassis temperature
power supply voltage status

Imported Objects

From CISCO-SMI

local

OBJECT-IDENTITY

From RFC-1212

OBJECT-TYPE

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
STR envBurnDate	1.3.6.1.4.1.9.2.1.111	DisplayString	read-only	The calibration / burn in date
STR envFirmVersion	1.3.6.1.4.1.9.2.1.108	DisplayString	read-only	Description of Environmental Card firmware
INT envPresent	1.3.6.1.4.1.9.2.1.77	INTEGER	read-only	Is there an environmental monitor card in this box?, 0 - No, 1-AGS card present, wrong firmware, 2-AGS CARD present, firmware ok, 3-7000 support
STR envSerialNumber	1.3.6.1.4.1.9.2.1.112	DisplayString	read-only	Serial Number of environmental monitor card
STR envTechnicianID	1.3.6.1.4.1.9.2.1.109	DisplayString	read-only	Technician ID
STR envTestPt1Descr	1.3.6.1.4.1.9.2.1.78	DisplayString	read-only	Description of the test point 1. Typically ambient air or the temperature of air entering the router
INT envTestPt1last	1.3.6.1.4.1.9.2.1.96	INTEGER	read-only	Value of TestPt1 when last shutdown occurred.
INT envTestPt1MarginVal	1.3.6.1.4.1.9.2.1.90	INTEGER	read-only	Value at which the router will shutdown. Typically the ambient air temperature that will shut the router down. (e.g. 43)
INT envTestPt1Measure	1.3.6.1.4.1.9.2.1.79	INTEGER	read-only	Current value of test point 1. Typically a temperature in centigrade.
INT envTestPt1warn	1.3.6.1.4.1.9.2.1.102	INTEGER	read-only	Is this test point at a warning level?
STR envTestPt2Descr	1.3.6.1.4.1.9.2.1.80	DisplayString	read-only	Description of the test point 2. Typically airflow or the temperature of air leaving the router
INT envTestPt2last	1.3.6.1.4.1.9.2.1.97	INTEGER	read-only	Value of TestPt2 when last shutdown occurred.
INT envTestPt2MarginVal	1.3.6.1.4.1.9.2.1.91	INTEGER	read-only	Value at which the router will shutdown. Typically the airflow air temperature that will shut the router down. (e.g. 58)
INT envTestPt2Measure	1.3.6.1.4.1.9.2.1.81	INTEGER	read-only	Current value of test point 2. Typically a temperature in centigrade.
INT envTestPt2warn	1.3.6.1.4.1.9.2.1.103	INTEGER	read-only	Is this test point at a warning level?
STR envTestPt3Descr	1.3.6.1.4.1.9.2.1.82	DisplayString	read-only	Description of the test point 3. Typically +5 volt
INT envTestPt3last	1.3.6.1.4.1.9.2.1.98	INTEGER	read-only	Value of TestPt3 when last shutdown occurred.
INT envTestPt3MarginPercent	1.3.6.1.4.1.9.2.1.92	INTEGER	read-only	+/- Percentage that will shut the router down, (e.g. 10%) typically +5 volt
INT envTestPt3Measure	1.3.6.1.4.1.9.2.1.83	INTEGER	read-only	Current value of test point 3. Typically the value in millivolts of the +5v supply
INT envTestPt3warn	1.3.6.1.4.1.9.2.1.104	INTEGER	read-only	Is this test point at a warning level?
STR envTestPt4Descr	1.3.6.1.4.1.9.2.1.84	DisplayString	read-only	Description of the test point 4. Typically +12 volt
INT envTestPt4last	1.3.6.1.4.1.9.2.1.99	INTEGER	read-only	Value of TestPt4 when last shutdown occurred.
INT envTestPt4MarginPercent	1.3.6.1.4.1.9.2.1.93	INTEGER	read-only	+/- Percentage that will shut the router down, (e.g. 15%) typically +12 volt
INT envTestPt4Measure	1.3.6.1.4.1.9.2.1.85	INTEGER	read-only	Current value of test point 4. Typically the value in millivolts of the +12v supply
INT envTestPt4warn	1.3.6.1.4.1.9.2.1.105	INTEGER	read-only	Is this test point at a warning level?
STR envTestPt5Descr	1.3.6.1.4.1.9.2.1.86	DisplayString	read-only	Description of the test point 5. Typically -12 volt
INT envTestPt5last	1.3.6.1.4.1.9.2.1.100	INTEGER	read-only	Value of TestPt5 when last shutdown occurred.
INT envTestPt5MarginPercent	1.3.6.1.4.1.9.2.1.94	INTEGER	read-only	+/- Percentage that will shut the router down, (e.g. 15%) typically -12 volt
INT envTestPt5Measure	1.3.6.1.4.1.9.2.1.87	INTEGER	read-only	Current value of test point 5. Typically the value in millivolts of the -12v supply
INT envTestPt5warn	1.3.6.1.4.1.9.2.1.106	INTEGER	read-only	Is this test point at a warning level?
STR envTestPt6Descr	1.3.6.1.4.1.9.2.1.88	DisplayString	read-only	Description of the test point 6. Typically -5 volt
INT envTestPt6last	1.3.6.1.4.1.9.2.1.101	INTEGER	read-only	Value of TestPt6 when last shutdown occurred.
INT envTestPt6MarginPercent	1.3.6.1.4.1.9.2.1.95	INTEGER	read-only	+/- Percentage that will shut the router down, (e.g. 10%) typically -5 volt
INT envTestPt6Measure	1.3.6.1.4.1.9.2.1.89	INTEGER	read-only	Current value of test point 6. Typically the value in millivolts of the -5v supply
INT envTestPt6warn	1.3.6.1.4.1.9.2.1.107	INTEGER	read-only	Is this test point at a warning level?
STR envType	1.3.6.1.4.1.9.2.1.110	DisplayString	read-only	The type of environmental card
lenv	1.3.6.1.4.1.9.2.1

RFC description

Legacy Cisco environmental monitoring for temperature, airflow, and other physical conditions in routers.

Start monitoring Legacy Cisco IOS router/switch, early platforms (temperature/voltage, pre-CISCO-ENVMON-MIB) 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 OLD-CISCO-ENV-MIB

What Is OLD-CISCO-ENV-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description