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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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iso/org/dod/internet/private/enterprises/.738/.10/.6/.5/mplsTeMIB/.1/mplsTunnelTable/mplsTunnelEntry

mplsTunnelEntry

OBJECT-TYPE

1.3.6.1.4.1.738.10.6.5.2.1.2.1

Access

not-accessible

Status

current

Source

PRVT-MPLS-TE-MIB

Sub-identifiers

103

Description

An entry in this table represents an MPLS tunnel. An entry can be created by a network administrator or by an SNMP agent as instructed by an MPLS signaling protocol. Whenever a new entry is created with mplsTunnelIsIf set to true(1), then a corresponding entry is created in ifTable as well (see RFC 2233). The ifType of this entry is mplsTunnel(150).

Syntax

MplsTunnelEntry

Children (103)

.1mplsTunnelIndex .2mplsTunnelInstance .3mplsTunnelIngressLSRId .4mplsTunnelEgressLSRId .5mplsTunnelName .6mplsTunnelDescr .7mplsTunnelIsIf .8mplsTunnelIfIndex .9mplsTunnelOwner .10mplsTunnelRole .11mplsTunnelXCPointer .12mplsTunnelSignallingProto .13mplsTunnelSetupPrio .14mplsTunnelHoldingPrio .15mplsTunnelSessionAttributes .16mplsTunnelLocalProtectInUse .17mplsTunnelResourcePointer .18mplsTunnelPrimaryInstance .19mplsTunnelInstancePriority .20mplsTunnelHopTableIndex .21mplsTunnelPathInUse .22mplsTunnelARHopTableIndex .23mplsTunnelCHopTableIndex .24mplsTunnelIncludeAnyAffinity .25mplsTunnelIncludeAllAffinity .26mplsTunnelExcludeAnyAffinity .27mplsTunnelTotalUpTime .28mplsTunnelInstanceUpTime .29mplsTunnelPrimaryUpTime .30mplsTunnelPathChanges .31mplsTunnelLastPathChange .32mplsTunnelCreationTime .33mplsTunnelStateTransitions .34mplsTunnelAdminStatus .35mplsTunnelOperStatus .36mplsTunnelRowStatus .37mplsTunnelStorageType .38mplsTunnelUnnumIf .39mplsTunnelAttributes .40mplsTunnelLSPEncoding .41mplsTunnelSwitchingType .42mplsTunnelLinkProtection .43mplsTunnelGPid .44mplsTunnelSecondary .45mplsTunnelDirection .46mplsTunnelPathComp .47mplsTunnelUpNotRecip .48mplsTunnelDownNotRecip .49mplsTunnelAdminStatusFlags .50mplsTunnelExtraParamsPtr .51mplsTunnelUseEgressLabel .52mplsTunnelEgressLabel .53mplsTunnelEgressLabelType .54mplsTunnelOmitEROIfOneHop .55mplsTunnelPrivateData .56mplsTunnelSrcTNAAddressType .57mplsTunnelSrcTNAAddress .58mplsTunnelDestTNAAddressType .59mplsTunnelDestTNAAddress .60mplsTunnelEndToEndRerouting .62mplsTunnelIsUni .63mplsTunnelUniServiceLevel .64mplsTunnelUniEgressLabel .65mplsTunnelUniEgressLabelType .66mplsTunnelUniEgressLabelPort .67mplsTunnelUniRvsEgressLabel .68mplsTunnelUniRvsEgressLabelType .69mplsTunnelUniRvsEgressLabelPort .70mplsTunnelDeletionMode .71mplsTunnelUniDiversityListIndex .72mplsTunnelDiffServIndex .73mplsTunnelReversePrivateData .74mplsTunnelFastRerouteMode .75mplsTunnelBackupSetupPrio .76mplsTunnelBackupHoldingPriority .77mplsTunnelBackupIncAny .78mplsTunnelBackupIncAll .79mplsTunnelBackupExcAny .80mplsTunnelBackupBandwidth .81mplsTunnelBackupMaxHops .84mplsTunnelIsSpc .85mplsTunnelUniIngressLabel .86mplsTunnelUniIngressLabelType .87mplsTunnelUniIngressLabelPort .88mplsTunnelUniRvsIngrLabel .89mplsTunnelUniRvsIngrLabelType .90mplsTunnelUniRvsIngrLabelPort .91mplsTunnelDiffServClassType .92mplsTunnelExtendedProtection .93mplsTunnelProtecting .94mplsTunnelNotification .95mplsTunnelLspProtection .96mplsTunnelAssociatedLspId .97mplsTunnelCallIdType .98mplsTunnelCallId .100mplsTunnelIsIpv6 .101mplsTunnelUpNotRecipType .102mplsTunnelDownNotRecipType .103mplsTunnelMtu .104mplsTunnelRebuildTimer .105mplsTunnelOperStatusFlags .106mplsTunnelGuardedDest .107mplsTunnelMBBTimeOut