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What's a MIB?

A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

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SNMP (Simple Network Management Protocol) is how network devices — routers, switches, servers — report status and statistics to monitoring tools. It's the protocol; MIBs are the vocabulary it uses to describe what's being asked for.

What's an OID?

An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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HH3C-LswDEVM-MIB

69 objects

Added hh3cDevMFanSpeedPercent, hh3cDevMFanSpeedMode, hh3cDevMPowerOutputVoltage, hh3cDevMPowerOutputCurrent and hh3cDevMPowerCapacity.

Imported Objects

HH3C-LSW-DEV-ADM-MIB	hh3cLswFrameIndex hh3cLswSlotIndex
HH3C-OID-MIB	hh3clswCommon hh3cRhw
SNMPv2-SMI	Gauge32 Integer32 MODULE-IDENTITY OBJECT-IDENTITY OBJECT-TYPE TimeTicks

OID	Name	Access	Status	Description
1.3.6.1.4.1.25506.8.8	Nodehh3cDevice
1.3.6.1.4.1.25506.8.8.1	Tablehh3cCpuTable	not-accessible	current	A table of CPU statistics.
1.3.6.1.4.1.25506.8.8.1.1	Rowhh3cCpuEntry	not-accessible	current	The Entries of hh3cCpuTable.
1.3.6.1.4.1.25506.8.8.1.1.1	Columnhh3cCpuIndex	not-accessible	current	Index of hh3cCpuTable. This integer is a unique number to identify the CPU(s). We recommend two Number Plans in this paper, Logical Number or Physical Number. …
1.3.6.1.4.1.25506.8.8.1.1.2	Columnhh3cCpuCostRate	read-only	current	The overall CPU busy percentage in the last 5 second period.
1.3.6.1.4.1.25506.8.8.1.1.3	Columnhh3cCpuCostRatePer1Min	read-only	current	The overall CPU cost percentage in the last 1 minute period.
1.3.6.1.4.1.25506.8.8.1.1.4	Columnhh3cCpuCostRatePer5Min	read-only	current	The overall CPU cost percentage in the last 5 minutes period.
1.3.6.1.4.1.25506.8.8.2	Nodehh3cMem
1.3.6.1.4.1.25506.8.8.2.1	Tablehh3cMemTable	not-accessible	current	This table contains memory information.
1.3.6.1.4.1.25506.8.8.2.1.1	Rowhh3cMemEntry	not-accessible	current	The Entries of hh3cMemTable
1.3.6.1.4.1.25506.8.8.2.1.1.1	Columnhh3cMemModuleIndex	not-accessible	current	Index of hh3cMemTable. This integer is a unique number to identify the memory module. We recommend two Number Plans in this paper, Logical Number or Physical N…
1.3.6.1.4.1.25506.8.8.2.1.1.2	Columnhh3cMemSize	read-only	current	Indicates the total size of the memory module which is on the managed object.
1.3.6.1.4.1.25506.8.8.2.1.1.3	Columnhh3cMemFree	read-only	current	Indicates the free size of the memory
1.3.6.1.4.1.25506.8.8.2.1.1.4	Columnhh3cMemRawSliceUsed	read-only	current	Indicates the used size of the raw slice memory
1.3.6.1.4.1.25506.8.8.2.1.1.5	Columnhh3cMemLgFree	read-only	current	The largest free size of the contiguous area in the memory. The unit is byte.
1.3.6.1.4.1.25506.8.8.2.1.1.6	Columnhh3cMemFail	read-only	current	The times of memory allocation failures
1.3.6.1.4.1.25506.8.8.2.1.1.7	Columnhh3cMemFailNoMem	read-only	current	The times of memory allocation failures due to no free memory.
1.3.6.1.4.1.25506.8.8.2.2	Tablehh3cBufTable	not-accessible	current	This table contains buffer information.
1.3.6.1.4.1.25506.8.8.2.2.1	Rowhh3cBufEntry	not-accessible	current	The Entries of hh3cBufferTable
1.3.6.1.4.1.25506.8.8.2.2.1.1	Columnhh3cBufModuleIndex	not-accessible	current	Index of hh3cBufferTable. This integer is a unique number to identify the buffer module. We recommend two Number Plans in this paper, Logical Number or Physica…
1.3.6.1.4.1.25506.8.8.2.2.1.2	Columnhh3cBufSize	not-accessible	current	The size of buffer,unit is byte.
1.3.6.1.4.1.25506.8.8.2.2.1.3	Columnhh3cBufCurrentTotal	read-only	current	The total number of buffer currently.
1.3.6.1.4.1.25506.8.8.2.2.1.4	Columnhh3cBufCurrentUsed	read-only	current	The number of used buffer currently.
1.3.6.1.4.1.25506.8.8.3	Nodehh3cFlh
1.3.6.1.4.1.25506.8.8.3.1	Scalarhh3cFlhTotalSize	read-only	current	The flash memory's total size, in kilobyte
1.3.6.1.4.1.25506.8.8.3.2	Scalarhh3cFlhTotalFree	read-only	current	The free space in internal flash memory, in kilobyte
1.3.6.1.4.1.25506.8.8.3.3	Scalarhh3cFlhLastDelTime	read-only	current	The time since system up of the latest deleting operation of flash memory. The value of Zero indicates there is no erasing operation since system up
1.3.6.1.4.1.25506.8.8.3.4	Scalarhh3cFlhDelState	read-only	current	The state indicates the result of current or latest flash memory deleting operation
1.3.6.1.4.1.25506.8.8.3.5	Scalarhh3cFlhState	read-only	current	Busy indicates the flash memory is unavailable due to others may be using it, and free indicates the flash memory is available now
1.3.6.1.4.1.25506.8.35.9	Identityhh3cLswdevMMib			Added hh3cDevMFanSpeedPercent, hh3cDevMFanSpeedMode, hh3cDevMPowerOutputVoltage, hh3cDevMPowerOutputCurrent and hh3cDevMPowerCapacity.
1.3.6.1.4.1.25506.8.35.9.1	Identityhh3cLswdevMMibObject		current	Description.
1.3.6.1.4.1.25506.8.35.9.1.1	Tablehh3cdevMFanStatusTable	not-accessible	current	Fan status description table
1.3.6.1.4.1.25506.8.35.9.1.1.1	Rowhh3cdevMFanStatusEntry	not-accessible	current	Fan status description table entry
1.3.6.1.4.1.25506.8.35.9.1.1.1.1	Columnhh3cDevMFanNum	read-only	current	Fan number
1.3.6.1.4.1.25506.8.35.9.1.1.1.2	Columnhh3cDevMFanStatus	read-only	current	Fan status: active (1), deactive (2) not installed (3) and unsupported (4)
1.3.6.1.4.1.25506.8.35.9.1.1.1.3	Columnhh3cDevMFanPosFrame	read-only	current	Frame number of the fan
1.3.6.1.4.1.25506.8.35.9.1.1.1.4	Columnhh3cDevMFanPosSlot	read-only	current	Slot number of the fan
1.3.6.1.4.1.25506.8.35.9.1.1.1.5	Columnhh3cDevMFanPosIndex	read-only	current	ID of the fan
1.3.6.1.4.1.25506.8.35.9.1.1.1.6	Columnhh3cDevMFanMaxSpeed	read-only	current	Maximum speed of the fan, in RPM
1.3.6.1.4.1.25506.8.35.9.1.1.1.7	Columnhh3cDevMFanCurrentSpeed	read-only	current	Current speed of the fan, in RPM
1.3.6.1.4.1.25506.8.35.9.1.1.1.8	Columnhh3cDevMFanSpeedPercent	read-only	current	Percentage of current fan speed to maximum fan speed
1.3.6.1.4.1.25506.8.35.9.1.1.1.9	Columnhh3cDevMFanSpeedMode	read-only	current	Speed mode of a fan
1.3.6.1.4.1.25506.8.35.9.1.2	Tablehh3cdevMPowerStatusTable	not-accessible	current	Power status description table
1.3.6.1.4.1.25506.8.35.9.1.2.1	Rowhh3cdevMPowerStatusEntry	not-accessible	current	Power status description table entry
1.3.6.1.4.1.25506.8.35.9.1.2.1.1	Columnhh3cDevMPowerNum	read-only	current	Power number
1.3.6.1.4.1.25506.8.35.9.1.2.1.2	Columnhh3cDevMPowerStatus	read-only	current	Power status: active (1), deactive (2) not installed (3) and unsupported
1.3.6.1.4.1.25506.8.35.9.1.2.1.3	Columnhh3cDevMPowerEntIndex	read-only	current	Power entity index
1.3.6.1.4.1.25506.8.35.9.1.2.1.4	Columnhh3cDevMPowerRatedVoltage	read-only	current	Power rated voltage
1.3.6.1.4.1.25506.8.35.9.1.2.1.5	Columnhh3cDevMPowerRatedCurrent	read-only	current	Power rated current
1.3.6.1.4.1.25506.8.35.9.1.2.1.6	Columnhh3cDevMPowerLoadFactor	read-only	current	Power load factor
1.3.6.1.4.1.25506.8.35.9.1.2.1.7	Columnhh3cDevMPowerUsedPower	read-only	current	Power usage
1.3.6.1.4.1.25506.8.35.9.1.2.1.8	Columnhh3cDevMPowerRemainingPower	read-only	current	Remaining of power
1.3.6.1.4.1.25506.8.35.9.1.2.1.9	Columnhh3cDevMPowerSupplyType	read-only	current	Power supply type
1.3.6.1.4.1.25506.8.35.9.1.2.1.10	Columnhh3cDevMPowerOutputVoltage	read-only	current	Power output voltage
1.3.6.1.4.1.25506.8.35.9.1.2.1.11	Columnhh3cDevMPowerOutputCurrent	read-only	current	Power output current
1.3.6.1.4.1.25506.8.35.9.1.2.1.12	Columnhh3cDevMPowerCapacity	read-only	current	Power capacity
1.3.6.1.4.1.25506.8.35.9.1.3	Tablehh3cdevMSlotEnvironmentTable	not-accessible	current	environment description table
1.3.6.1.4.1.25506.8.35.9.1.3.1	Rowhh3cdevMSlotEnvironmentEntry	not-accessible	current	environment description table entry
1.3.6.1.4.1.25506.8.35.9.1.3.1.1	Columnhh3cdevMSlotEnvironmentType	not-accessible	current	Environment type
1.3.6.1.4.1.25506.8.35.9.1.3.1.2	Columnhh3cDevMSlotEnvironmentStatus	read-only	current	Environment status
1.3.6.1.4.1.25506.8.35.9.1.3.1.3	Columnhh3cDevMSlotEnvironmentValue	read-only	current	Environment value
1.3.6.1.4.1.25506.8.35.9.1.3.1.4	Columnhh3cDevMSlotEnvironmentUpperLimit	read-write	current	Environment upper limit
1.3.6.1.4.1.25506.8.35.9.1.3.1.5	Columnhh3cDevMSlotEnvironmentLowerLimit	read-write	current	Environment Lower limit
1.3.6.1.4.1.25506.8.35.9.1.9	Scalarhh3cLinkUpDownTrapEnable	read-write	current	Enable/Disable linkUp/linkDown traps of the device, determining whether to enable linkUp/linkDown traps with that of the interface. When the value is enableBot…
1.3.6.1.4.1.25506.8.35.9.1.10	Scalarhh3cdot1qTpFdbLearnStatus	read-write	current	Enable/Disable the address learning.
1.3.6.1.4.1.25506.8.35.9.1.11	Scalarhh3cCfmWriteFlash	read-write	current	Write the current effective configuration into the Flash memory. This object does not support read operation.
1.3.6.1.4.1.25506.8.35.9.1.12	Scalarhh3cCfmEraseFlash	read-write	current	Delete the configuration from the Flash memory. This object does not support read operation.
1.3.6.1.4.1.25506.8.35.9.1.13	Scalarhh3cDevMFirstTrapTime	accessible-for-notify	current	Represents the first trap time.
1.3.6.1.4.1.25506.8.35.9.1.14	Nodehh3cdevMExternalAlarmStatus