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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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ARISTA-MAU-MIB

25 objects

This MIB module extends dot3MauType OBJECT-IDENTITIES defined in the IANA-MAU-MIB, covering all MAU types used by Arista Networks.

Imported Objects

ARISTA-SMI-MIB	aristaMibs
SNMPv2-SMI	MODULE-IDENTITY OBJECT-IDENTITY

OID	Name	Status	Description
1.3.6.1.4.1.30065.3.4	NodearistaSnmpDot3MauMgt
1.3.6.1.4.1.30065.3.4.1	NodearistaDot3MauType
1.3.6.1.4.1.30065.3.4.1.1	IdentityaristaDot3MauType10GbaseCR	current	Passive copper cable
1.3.6.1.4.1.30065.3.4.1.2	IdentityaristaDot3MauType10GbaseDwdmER	current	Dense Wavelength Division Multiplexing ER
1.3.6.1.4.1.30065.3.4.1.3	IdentityaristaDot3MauType40GbaseSR4	current	Short range over multi-mode fiber
1.3.6.1.4.1.30065.3.4.1.4	IdentityaristaDot3MauType40GbaseLR4	current	Long range over WDM single-mode fiber
1.3.6.1.4.1.30065.3.4.1.5	IdentityaristaDot3MauType40GbaseCR4	current	Passive copper cable
1.3.6.1.4.1.30065.3.4.1.6	IdentityaristaDot3MauType10GbaseDwdmZR	current	Dense Wavelength Division Multiplexing ZR
1.3.6.1.4.1.30065.3.4.1.7	IdentityaristaDot3MauType10GbaseCRA	current	Active copper cable
1.3.6.1.4.1.30065.3.4.1.8	IdentityaristaDot3MauType10GbaseZR	current	Very long range over single-mode fiber
1.3.6.1.4.1.30065.3.4.1.9	IdentityaristaDot3MauType10GbaseLRL	current	Long range (1km) over single-mode fiber
1.3.6.1.4.1.30065.3.4.1.10	IdentityaristaDot3MauType100GbaseSR10	current	Short range over multi-mode fiber
1.3.6.1.4.1.30065.3.4.1.11	IdentityaristaDot3MauType100GbaseLR4	current	Long range over WDM single-mode fiber
1.3.6.1.4.1.30065.3.4.1.12	IdentityaristaDot3MauType100GbaseER4	current	Extended range over WDM single-mode fiber
1.3.6.1.4.1.30065.3.4.1.13	IdentityaristaDot3MauType40GbaseXSR4	current	Short range (300m) over multi-mode fiber
1.3.6.1.4.1.30065.3.4.1.14	IdentityaristaDot3MauType40GbaseAR4	current	Active cable
1.3.6.1.4.1.30065.3.4.1.15	IdentityaristaDot3MauType40GbasePLR4	current	Long range over parallel single-mode fiber
1.3.6.1.4.1.30065.3.4.1.16	IdentityaristaDot3MauType40GbasePLRL4	current	Long range (1km) over parallel single-mode fiber
1.3.6.1.4.1.30065.3.4.1.17	IdentityaristaDot3MauType40GbasePSM4	current	Long range over parallel single-mode fiber
1.3.6.1.4.1.30065.3.4.1.18	IdentityaristaDot3MauType40GbaseLRL4	current	Long range (1km) over WDM single-mode fiber
1.3.6.1.4.1.30065.3.4.1.19	IdentityaristaDot3MauType100GbaseSR4	current	Short range over multi-mode fiber
1.3.6.1.4.1.30065.3.4.1.20	IdentityaristaDot3MauType40GbaseUniv	current	Long range over WDM single- or multi-mode fiber
1.3.6.1.4.1.30065.3.4.1.21	IdentityaristaDot3MauType40GbaseER4	current	Extended range over WDM single-mode fiber
1.3.6.1.4.1.30065.3.4.1.22	IdentityaristaDot3MauType100GbaseXSR10	current	Short range (300m) over multi-mode fiber
1.3.6.1.4.1.30065.3.4.2	IdentityaristaMauMIB		This MIB module extends dot3MauType OBJECT-IDENTITIES defined in the IANA-MAU-MIB, covering all MAU types used by Arista Networks.