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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.

What's SNMP?

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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CHASSIS-MIB

23 objects

Listing and brief description of product model numbers.

Imported Objects

NT-ENTERPRISE-DATA-MIB	ntEnterpriseDataTasmanMgmt
SNMPv2-CONF	NOTIFICATION-GROUP
SNMPv2-SMI	Integer32 MODULE-IDENTITY OBJECT-TYPE
SNMPv2-TC	DisplayString

OID	Name	Access	Status	Description
1.3.6.1.4.1.562.73.1.1.1.2	IdentitynnchassisMib			Listing and brief description of product model numbers.
1.3.6.1.4.1.562.73.1.1.1.2.1	ScalarnnchassisModel	read-only	current	The chassis model of the system.
1.3.6.1.4.1.562.73.1.1.1.2.2	ScalarnnchassisOperStatus	read-only	current	The operational status of the chassis.
1.3.6.1.4.1.562.73.1.1.1.2.3	ScalarnnchassisSerialNumber	read-only	current	The serial number of the chassis.
1.3.6.1.4.1.562.73.1.1.1.2.4	ScalarnnchassisRev	read-only	current	The Revision of the chassis.
1.3.6.1.4.1.562.73.1.1.1.2.5	TablennchassisInfoTable	not-accessible	current	Table displaying chassis information such as slot/subslot information, cardtype/status, FPGA and CPLD revisions.
1.3.6.1.4.1.562.73.1.1.1.2.5.1	RownnchassisInfoEntry	not-accessible	current	Each chassis entry reresents the slot/subslot , the card in the slot and related information.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.1	ColumnnnchassisInfoSlotSubSlotIndex	read-only	current	The slot/subslot index uniquely identifies the entry in the table.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.2	ColumnnnchassisInfoSlotSubSlotString	read-only	current	String representation for the slot/subslot.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.3	ColumnnnchassisInfoCardType	read-only	current	The card Type in the slot/subslot.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.4	ColumnnnchassisInfoCardStatus	read-only	current	The card status reveals the admin and Oper status of the card in the slot/subslot.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.5	ColumnnnchassisInfoModelNumber	read-only	current	The model number of the card.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.6	ColumnnnchassisInfoSerialNumber	read-only	current	The serial number of the card.
1.3.6.1.4.1.562.73.1.1.1.2.5.1.7	ColumnnnchassisInfoFPGARev	read-only	current	The FPGA revision of the card
1.3.6.1.4.1.562.73.1.1.1.2.5.1.8	ColumnnnchassisInfoFPGAEngRev	read-only	current	The FPGA eng revision of the card
1.3.6.1.4.1.562.73.1.1.1.2.5.1.9	ColumnnnchassisInfoCPLDRev	read-only	current	The CPLD revision of the card
1.3.6.1.4.1.562.73.1.1.1.2.5.1.10	ColumnnnchassisInfoCPLDEngRev	read-only	current	The CPLD eng revision of the card
1.3.6.1.4.1.562.73.1.1.1.2.6	NodennSFPTraps
1.3.6.1.4.1.562.73.1.1.1.2.6.0	NodennSFPNotifications
1.3.6.1.4.1.562.73.1.1.1.2.6.0.1	NotificationnnSFPUpTrap		current	Trap being generated when a SFP�connection is up.
1.3.6.1.4.1.562.73.1.1.1.2.6.0.2	NotificationnnSFPDownTrap		current	Trap being generated when a SFP�connection is down.
1.3.6.1.4.1.562.73.1.1.1.2.6.1	NodennSFPTrapVariables
1.3.6.1.4.1.562.73.1.1.1.2.6.1.1	ScalarnnSFPStatusStr	accessible-for-notify	current	Status of SFP.