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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/.5504/.10/.1/efmCuMIB/.1/.2/.6/efmCuPme10PProfileTable/efmCuPme10PProfileEntry/efmCuPme10PBandNotchProfiles

efmCuPme10PBandNotchProfiles

OBJECT-TYPE

1.3.6.1.4.1.5504.10.1.7.1.2.6.1.1.5

Access

read-create

Status

current

Source

EFM-CU-MIB

Sub-identifiers

Description

10PASS-TS PME Egress Control Band Notch Profile bitmap, as specified in 802.3ah Annex 62A. Possible values are: Profile Name G.991.3 T1.424/T-U TS101 270-1 StartF EndF Table Table Table (MHz) (MHz) profile0(0) - no profile profile1(1) - F-5 #01 - - 1.810 1.825 profile2(2) - 6-2 15-1 17 1.810 2.000 profile3(3) - F-5 #02 - - 1.907 1.912 profile4(4) - F-5 #03 - - 3.500 3.575 profile5(5) - 6-2 - 17 3.500 3.800 profile6(6) - - 15-1 - 3.500 4.000 profile7(7) - F-5 #04 - - 3.747 3.754 profile8(8) - F-5 #05 - - 3.791 3.805 profile9(9) - 6-2 - 17 7.000 7.100 profile10(10) - F-5 #06 15-1 - 7.000 7.300 profile11(11) - 6-2 15-1 1 10.100 10.150 Any combination of profiles can be specified by ORing individual profiles, for example value of 0x0622 selects profiles 2,6,10 and 11. This object maps to the aBandNotchProfile attribute in Clause 30.

Syntax

BITS { profile0(0), profile1(1), profile2(2), profile3(3), profile4(4), profile5(5), profile6(6), profile7(7), profile8(8), profile9(9), profile10(10), profile11(11) }