CISCOSB-HWENVIROMENT

All MIBs › CISCOSB-HWENVIROMENT

Organization: Cisco Small Business

Last Updated: 2003-09-21

Category: Hardware and Environment, Vendor: RADLAN/Cisco SB

Description: Monitors hardware environmental conditions (temperature sensors, fans, power supplies) on Cisco Small Business switches, defining environmental state objects.

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 CISCOSB-HWENVIROMENT?

CISCOSB-HWENVIROMENT is a Cisco Small Business private MIB dedicated to physical environmental monitoring of the switch chassis, covering fan and power-supply status. It exposes per-fan and per-power-supply tables describing each unit's index, textual description, operational state, and for power supplies, the power source and cooling-fan direction. This is squarely a hardware-health MIB: it is used to detect fan failures, degraded cooling, and power-supply faults or loss of redundancy before they cause a thermal shutdown or unexpected outage. It has no significant cross-MIB dependency beyond the shared CISCOSB private-enterprise numbering, though it complements the standard ENTITY-MIB's physical inventory model. It is deployed wherever CISCOSB switches need continuous environmental health checks in wiring closets or small data centers. Engineers can download the CISCOSB-HWENVIROMENT file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCOSB-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.

Supported Devices

Cisco Small Business switches

Monitoring Examples

A monitoring system would poll rlEnvMonFanStatusTable/rlEnvMonFanStatusEntry, reading rlEnvMonFanState per rlEnvMonFanStatusIndex to detect a fan reporting a failed or warning state, using rlEnvMonFanStatusDescr to identify which physical fan is affected. Similarly, rlEnvMonSupplyStatusTable's rlEnvMonSupplyState combined with rlEnvMonSupplySource shows whether a power supply has lost input power or is running in a degraded mode. A fan state changing from normal to failed, especially alongside a rising temperature elsewhere in the chassis, is the classic early-warning pattern this MIB is polled to catch.

What Can Be Monitored

fan operational status
fan description/identity
power supply status
power supply source
power supply fan direction

Imported Objects

From CISCOSB-MIB

switch001

MODULE-IDENTITY

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using rlEnvMonSupplySource OID:

Select a Cisco Small Business switch 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 rlEnvMonSupplySource 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 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. 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 value is 'unknown', or it changes unexpectedly, since which supply is correct depends on your power configuration and an unplanned change often indicates a failover. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
rlEnv	1.3.6.1.4.1.9.6.1.101.83			The private MIB module definition for environment of CISCOSB devices.
rlEnvFanData	1.3.6.1.4.1.9.6.1.101.83.5
INT rlEnvFanDataAdminLevel	1.3.6.1.4.1.9.6.1.101.83.5.1.1.5	INTEGER	read-write	Configured fan speed level
RLE rlEnvFanDataDirection	1.3.6.1.4.1.9.6.1.101.83.5.1.1.6	RlEnvMonDirection	read-only	The direction of the system's fan.
rlEnvFanDataEntry	1.3.6.1.4.1.9.6.1.101.83.5.1.1		not-accessible	An entry of this table specifies a unit
INT rlEnvFanDataOperLevel	1.3.6.1.4.1.9.6.1.101.83.5.1.1.4	INTEGER	read-only	Fan speed operative level
INT rlEnvFanDataSpeed	1.3.6.1.4.1.9.6.1.101.83.5.1.1.3	INTEGER	read-only	Fan speed in RPM
INT rlEnvFanDataStackUnit	1.3.6.1.4.1.9.6.1.101.83.5.1.1.1	INTEGER	read-only	The number of the stack unit
rlEnvFanDataTable	1.3.6.1.4.1.9.6.1.101.83.5.1		not-accessible	For each unit in a stack
INT rlEnvFanDataTemp	1.3.6.1.4.1.9.6.1.101.83.5.1.1.2	INTEGER	read-only	The unit temperature
RLE rlEnvMonFanState	1.3.6.1.4.1.9.6.1.101.83.1.1.1.3	RlEnvMonState	read-only	The mandatory state of the fan being instrumented.
STR rlEnvMonFanStatusDescr	1.3.6.1.4.1.9.6.1.101.83.1.1.1.2	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.
rlEnvMonFanStatusEntry	1.3.6.1.4.1.9.6.1.101.83.1.1.1		not-accessible	An entry in the fan status table, representing the status of the associated fan maintained by the environmental monitor.
INT rlEnvMonFanStatusIndex	1.3.6.1.4.1.9.6.1.101.83.1.1.1.1	INTEGER	not-accessible	Unique index for the fan being instrumented. This index is for SNMP purposes only, and has no intrinsic meaning.
rlEnvMonFanStatusTable	1.3.6.1.4.1.9.6.1.101.83.1.1		not-accessible	The table of fan status maintained by the environmental monitor.
RLE rlEnvMonSupplyFanDirection	1.3.6.1.4.1.9.6.1.101.83.1.2.1.5	RlEnvMonDirection	read-only	The direction of the power supply's fan.
INT rlEnvMonSupplySourceEx	1.3.6.1.4.1.9.6.1.101.83.1.2.1.4	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 rlEnvMonSupplyState	1.3.6.1.4.1.9.6.1.101.83.1.2.1.3	RlEnvMonState	read-only	The mandatory state of the power supply being instrumented.
STR rlEnvMonSupplyStatusDescr	1.3.6.1.4.1.9.6.1.101.83.1.2.1.2	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.
rlEnvMonSupplyStatusEntry	1.3.6.1.4.1.9.6.1.101.83.1.2.1		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	1.3.6.1.4.1.9.6.1.101.83.1.2.1.1	INTEGER	not-accessible	Unique index for the power supply being instrumented. This index is for SNMP purposes only, and has no intrinsic meaning.
rlEnvMonSupplyStatusTable	1.3.6.1.4.1.9.6.1.101.83.1.2		not-accessible	The table of power supply status maintained by the environmental monitor card.
rlEnvPhysicalDescription	1.3.6.1.4.1.9.6.1.101.83.1

RFC description

Monitors environmental conditions (temperature, fans, power) on Cisco Small Business devices.

Start monitoring Cisco Small Business switches 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 CISCOSB-HWENVIROMENT