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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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iso/org/dod/internet/mgmt/mib2/docsDevNotifMIB/.2/.0/docsDevCmSwUpgradeFailNotif

docsDevCmSwUpgradeFailNotif

NOTIFICATION-TYPE

1.3.6.1.2.1.132.2.0.10

Status

current

Source

DOCS-IETF-CABLE-DEVICE-NOTIFICATION-MIB

Sub-identifiers

Description

A notification to report the failure of a software upgrade attempt. This notification sends additional information about the event by including the following objects in its varbinding list. - docsDevEvLevel: the priority level associated with the event. - docsDevEvId: the unique identifier of the event that occurred. - docsDevEvText: a textual description of the event. - ifPhysAddress: the MAC address of the cable interface of this cable modem. - docsIfCmCmtsAddress: the MAC address of the CMTS to which the CM is connected (if there is a cable card/interface in the CMTS, then it is actually the MAC address of the cable interface to which it is connected). - docsDevSwFilename: the software image file name - docsDevSwServer: the IP address of the server that the image is retrieved from. - docsIfDocsisBaseCapability: the highest version of the DOCSIS specification (1.0, 1.1, 2.0) that the device is capable of supporting. - docsIfCmStatusDocsisOperMode: the QOS level (1.0, 1.1) that the CM is operating in. - docsIfCmStatusModulationType: the upstream modulation methodology used by the CM.