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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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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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NORTEL-ENTITY-VENDORTYPE-MIB

22 objects

This MIB describes Nortel Network's vendor type identifiers for use with the Entity MIB's entPhysicalVendorType.

Imported Objects

NORTEL-GENERIC-MIB	nortelGenericMIBs
SNMPv2-SMI	MODULE-IDENTITY

OID	Name	Description
1.3.6.1.4.1.562.29.5	IdentitynnEntityVendorType	This MIB describes Nortel Network's vendor type identifiers for use with the Entity MIB's entPhysicalVendorType.
1.3.6.1.4.1.562.29.5.1	NodennEntityVendorTypeOther
1.3.6.1.4.1.562.29.5.2	NodennEntityVendorTypeUnknown
1.3.6.1.4.1.562.29.5.3	NodennEntityVendorTypeChassis
1.3.6.1.4.1.562.29.5.3.1	NodennEntityVendorTypeChassisUnknown
1.3.6.1.4.1.562.29.5.4	NodennEntityVendorTypeBackplane
1.3.6.1.4.1.562.29.5.4.1	NodennEntityVendorTypeBackplaneUnknown
1.3.6.1.4.1.562.29.5.5	NodennEntityVendorTypeContainer
1.3.6.1.4.1.562.29.5.5.1	NodennEntityVendorTypeContainerUnknown
1.3.6.1.4.1.562.29.5.6	NodennEntityVendorTypePowerSupply
1.3.6.1.4.1.562.29.5.6.1	NodennEntityVendorTypePowerSupplyUnknown
1.3.6.1.4.1.562.29.5.7	NodennEntityVendorTypeFan
1.3.6.1.4.1.562.29.5.7.1	NodennEntityVendorTypeFanUnknown
1.3.6.1.4.1.562.29.5.8	NodennEntityVendorTypeSensor
1.3.6.1.4.1.562.29.5.8.1	NodennEntityVendorTypeSensorUnknown
1.3.6.1.4.1.562.29.5.9	NodennEntityVendorTypeModule
1.3.6.1.4.1.562.29.5.9.1	NodennEntityVendorTypeModuleUnknown
1.3.6.1.4.1.562.29.5.10	NodennEntityVendorTypePort
1.3.6.1.4.1.562.29.5.10.1	NodennEntityVendorTypePortUnknown
1.3.6.1.4.1.562.29.5.11	NodennEntityVendorTypeStack
1.3.6.1.4.1.562.29.5.11.1	NodennEntityVendorTypeStackUnknown
1.3.6.1.4.1.562.29.5.12	NodennEntityVendorTypePecCodes