FAN-MIB

All MIBs › FAN-MIB

Organization: HP Networking

Last Updated: 2008-08-27

Category: Domain: Server Hardware, Hardware and Environment, Network Interfaces

Description: Generic MIB for monitoring fan unit status, speed, and failure conditions in network equipment and server hardware.

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 FAN-MIB?

FAN-MIB (module hpicfFanMIB) is an HP Networking vendor-specific MIB, hung off the HP-ICF-OID enterprise tree, that represents the fan units in an HP switch chassis. Its central table, hpicfFanTable, carries per-fan entries (hpicfFanTray, hpicfFanType, hpicfFanState, hpicfFanNumFailures, hpicfFanAirflowDirection) indexed by hpicfFanIndex, alongside a scalar for the administrator's preferred airflow direction (hpicfFanUserPrefAirflowDir) that the agent compares against actual fan orientation. The HpicfDcFanState textual convention enumerates failed, removed, off, underspeed, overspeed, and ok states, making it straightforward to alert on any non-ok condition. As a small, focused hardware-sensor MIB, it depends only on standard SNMPv2-SMI/CONF/TC imports and the HP-ICF-OID enterprise root, with no other vendor MIB dependencies. It is deployed on HP switch chassis with hot-swappable fan trays, and FAN-MIB SNMP monitoring is a standard part of chassis environmental health checks in HP switch deployments.

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

HP Networking switches (HP ProCurve/HPE switch chassis, HP-ICF platform)

Monitoring Examples

An operator polls hpicfFanState for each entry in hpicfFanTable; a fan reporting failed or removed rather than ok, especially combined with a rising hpicfFanNumFailures counter, would signal a fan module that needs physical replacement before the switch overheats.

What Can Be Monitored

fan tray/slot assignment
fan operational state (ok/failed/removed/over- or under-speed)
fan failure count
fan airflow direction vs. user-preferred direction
fan type identification

Imported Objects

From HP-ICF-OID

hpSwitch

OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using hpicfFanNumFailures OID:

Select an HP Networking switch chassis (HP ProCurve/HPE, HP-ICF platform) — fan tray health 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 hpicfFanNumFailures 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 number of times the fan has failed. 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 between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
hpicfFanMIB	1.3.6.1.4.1.11.2.14.11.5.1.54			The MIB module is for representing switch fan entity.
hpicfFanScalars	1.3.6.1.4.1.11.2.14.11.5.1.54.1
INT hpicfFanUserPrefAirflowDir	1.3.6.1.4.1.11.2.14.11.5.1.54.1.1	INTEGER	read-write	The user preferred fan airflow direction. The direction could be powerToPort or portToPower. The actual fan direction has to be changed manually, this will be used to indicate to the user when when the actual fan airflow direction is different from the user preferred airflow direction.
hpicfEntityFan	1.3.6.1.4.1.11.2.14.11.5.1.54.2
hpicfFanTable	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1		not-accessible	This table contains one row for every fan in the switch entity.
hpicfFanEntry	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1		not-accessible	Information about fan entity table.
HPI hpicfFanIndex	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.1	HpicfDcFanIndex	not-accessible	The index that is used to access the switch fan entry table.
I32 hpicfFanTray	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.2	Integer32	read-only	The tray number in which the fan is docked.
HPI hpicfFanType	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.3	HpicfDcFanType	read-only	An indication of the vendor-specific fan.
HPI hpicfFanState	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.4	HpicfDcFanState	read-only	The current state of the fan.
I32 hpicfFanRecovering	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.5	Integer32	read-only	An indication that the switch fan entity is faulty. Before declaring a fan to be good after a failure is detected, the same good indication must happen five (5) times in a row. A failure indication is always TRUE, while a good indication could be FALSE, hence this parameter is used to count the repeated good indications before declaring the fan to be good
C32 hpicfFanNumFailuresEx	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.6	Counter32	read-only	The number of times the fan has failed.
HPI hpicfFanAirflowDirection	1.3.6.1.4.1.11.2.14.11.5.1.54.2.1.1.7	HpicfDcFanAirflowDirection	read-only	Indication of the fan air flow direction, either from Power supply towards the port or from the port towards the power supply.
hpicfFanConformance	1.3.6.1.4.1.11.2.14.11.5.1.54.3
hpicfFanCompliance	1.3.6.1.4.1.11.2.14.11.5.1.54.3.1
hpicfDcFanCompliance	1.3.6.1.4.1.11.2.14.11.5.1.54.3.1.1			The compliance statement for entries which implement the FAN MIB.
hpicfFanGroups	1.3.6.1.4.1.11.2.14.11.5.1.54.3.2
hpicfFanScalarsGroup	1.3.6.1.4.1.11.2.14.11.5.1.54.3.2.1			Basic Scalars required in FAN MIB implementation.
hpicfFanGroup	1.3.6.1.4.1.11.2.14.11.5.1.54.3.2.2			FAN MIB parameters

RFC description

Switch fan entity management including airflow direction, speed, and operational state monitoring.

Start monitoring HP Networking switch chassis (HP ProCurve/HPE, HP-ICF platform) — fan tray health 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 FAN-MIB