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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/.2011/.6/hwXponCommonMIB/.1/.1/.1/hwXponDeviceOtdrTestTable/hwXponDeviceOtdrTestEntry/hwXponDeviceOtdrClockRate

hwXponDeviceOtdrClockRate

OBJECT-TYPE

1.3.6.1.4.1.2011.6.145.1.1.1.21.1.6

Access

read-only

Status

current

Source

HUAWEI-XPON-COMMON-MIB

Sub-identifiers

Description

Clock rate of the OTDR test. Options: 1.fortyMHz(1) - Indicates that the clock rate of the OTDR test is 40 MHz, at which, the system works in the low power consumption mode. 2.eightyMHz(2) - Indicates that the clock rate of the OTDR test is 80 MHz, at which, the system works in the high resolution mode. 3.invalid(-1) - Indicates that the query fails or no information is detected. The clock rate is determined by hardware.

Syntax

INTEGER { fortyMHz(1), eightyMHz(2), invalid(-1) }