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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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iso/org/dod/internet/private/enterprises/.890/.1/.5/.13/ies5206/.31/.2/.1/ontTable/ontEntry/ontAction

ontAction

OBJECT-TYPE

1.3.6.1.4.1.890.1.5.13.13.31.2.1.1.1.11

Access

read-write

Status

current

Source

IES5206-MIB

Sub-identifiers

Description

Setting this MIB with value below to request an action to occur for the ONU. 1 Reboot the ONU. 2 Perform a FW version check. If the current version mismatches with planned one, do FW upgrade if possible. 4 Delete all configuration stored in OLT related to the ONU. 5 Perform a file transfer. Download a file located in <ontFileTransferFileUri> with user name / password defined in <ontFileTransferUserName> and <ontFileTransferPassword> to the ONU and rename it to <ontFileTransferLocalFileName>. 6 Perform a file transfer. Upload a file <ontFileTransferLocalFileName> from the ONU to destination defined in <ontFileTransferFileUri> with user name / password defined in <ontFileTransferUserName> and <ontFileTransferPassword>. 7 Switch the ONU active/standby image rule and reboot. 8 Clear the ont upgrade status. This MIB returns following status to a get request. 0 This ONU is not doing any action above. 3 The FW upgrading is in progress.

Syntax

INTEGER { idle(0), rebootOnt(1), checkUpgardeFW(2), upgradingFW(3), delAllConfig(4), downloadFile(5), uploadFile(6), switchImageRule(7), clearUpgradeStatus(8) }