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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.

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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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NETSCREEN-CHASSIS-MIB

24 objects

This module defines the objects that are used to monitor device status such as Battery, Fan, Power and Temperature

Imported Objects

NETSCREEN-SMI	netscreen
SNMPv2-SMI	Integer32 IpAddress MODULE-IDENTITY OBJECT-TYPE
SNMPv2-TC	DisplayString

OID	Name	Access	Status	Description
1.3.6.1.4.1.3224.21	IdentitynetscreenChassis			This module defines the objects that are used to monitor device status such as Battery, Fan, Power and Temperature
1.3.6.1.4.1.3224.21.1	TablensPowerTable	not-accessible	current	Information describing installed power supply modules and their status
1.3.6.1.4.1.3224.21.1.1	RownsPowerEntry	not-accessible	current	Information describing one power supply module and its status
1.3.6.1.4.1.3224.21.1.1.1	ColumnnsPowerId	read-only	current	A 32-bit integer uniquely identifying the power supply id. For 5400, range is 1~3, For 5200, range is 1~2
1.3.6.1.4.1.3224.21.1.1.2	ColumnnsPowerStatus	read-only	current	A 32-bit integer uniquely identifying the power supply module's status: 0. Fail 1. Good 2. Not installed
1.3.6.1.4.1.3224.21.1.1.3	ColumnnsPowerDesc	read-only	current	A description for the power supply module
1.3.6.1.4.1.3224.21.2	TablensFanTable	not-accessible	current	Information describing the installed Fan modules and their status
1.3.6.1.4.1.3224.21.2.1	RownsFanEntry	not-accessible	current	Information describing one installed Fan module and its status
1.3.6.1.4.1.3224.21.2.1.1	ColumnnsFanId	read-only	current	A 32-bit integer uniquely identifying the Fan id. At the time of this writing.
1.3.6.1.4.1.3224.21.2.1.2	ColumnnsFanStatus	read-only	current	A 32-bit integer uniquely identifying the Fan module's status: 0. Fail 1. Good
1.3.6.1.4.1.3224.21.2.1.3	ColumnnsFanDesc	read-only	current	A description for the Fan module
1.3.6.1.4.1.3224.21.3	ScalarsysBatteryStatus	read-only	current	Information describing the installed Battery and its status: 1. Good 2. Error
1.3.6.1.4.1.3224.21.4	TablensTemperatureTable	not-accessible	current	Information describing the temperature measured by each module
1.3.6.1.4.1.3224.21.4.1	RownsTemperatureEntry	not-accessible	current	The temperature measured by a module
1.3.6.1.4.1.3224.21.4.1.1	ColumnnsTemperatureId	read-only	current	A 32-bit integer uniquely identifying temperature measured on a board or on a component e.g. CPU
1.3.6.1.4.1.3224.21.4.1.2	ColumnnsTemperatureSlotId	read-only	current	A 32-bit integer uniquely identifying the slot where the temperature is measured.
1.3.6.1.4.1.3224.21.4.1.3	ColumnnsTemperatureCur	read-only	current	The current temperature measured by the module, unit is Celsius
1.3.6.1.4.1.3224.21.4.1.4	ColumnnsTemperatureDesc	read-only	current	A description for the module
1.3.6.1.4.1.3224.21.5	TablensSlotTable	not-accessible	current	Information describing the installed management and traffic processing modules and their status, built-in and internal module are also listed here.
1.3.6.1.4.1.3224.21.5.1	RownsSlotEntry	not-accessible	current	Information describing one installed module and its status
1.3.6.1.4.1.3224.21.5.1.1	ColumnnsSlotId	read-only	current	A 32-bit integer uniquely identifying the slot id. The range varies on different platforms
1.3.6.1.4.1.3224.21.5.1.2	ColumnnsSlotType	read-only	current	A description of the installed module
1.3.6.1.4.1.3224.21.5.1.3	ColumnnsSlotStatus	read-only	current	Slot status
1.3.6.1.4.1.3224.21.5.1.4	ColumnnsSlotSN	read-only	current	Serial Number of the module