DOT3-MAU-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsDOT3-MAU-MIB

Organization: IETF Ethernet Interfaces and Hub MIB Working Group

Last Updated: 2003-09-19

Category: Standard: IEEE 802, Standard: IETF

Description: Manages IEEE 802.3 Medium Attachment Unit (MAU) parameters for Ethernet physical layer configuration and status.

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What Is DOT3-MAU-MIB?

DOT3-MAU-MIB is the standard IETF Ethernet Interfaces and Hub MIB Working Group MIB (RFC 4836, superseding RFC 2668) managing IEEE 802.3 MAU (Medium Attachment Unit) devices — the physical-layer transceivers on Ethernet interfaces and repeater/hub ports. Its repeater-port MAU table, keyed by group/port/MAU index, records MAU type, status, media-available flag and state-exit count, jabber state and entry count, and false-carrier count, a jack table records connector type, and an interface MAU table mirrors the same fields keyed by ifIndex. As a configuration/status MIB it lets an administrator confirm a port's negotiated MAU type and detect a jabbering or media-unavailable transceiver. It is deployed on network equipment implementing IEEE 802.3 MAU management (RFC 4836). Engineers implementing or auditing this functionality typically reference the DOT3-MAU-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in DOT3-MAU-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • Network equipment implementing IEEE 802.3 MAU management (RFC 4836)

Monitoring Examples

An administrator checks ifMauJabberState and ifMauMediaAvailable to diagnose a malfunctioning Ethernet transceiver on equipment implementing the standard DOT3-MAU-MIB.

What Can Be Monitored

  • MAU type, media-availability, and jabber state
Imported Objects

From IF-MIB

InterfaceIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Counter64
Integer32
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-IDENTITY
OBJECT-TYPE
mib-2

From SNMPv2-TC

AutonomousType
TEXTUAL-CONVENTION
TruthValue
OIDs

RFC description

Manages 802.3 Media Access Unit (MAU) information for 10/100/1000 Mb/s and 10 Gb/s Ethernet interfaces (RFC 3636).

Start monitoring Network equipment with IEEE 802.3 MAU transceivers (vendor-neutral IETF standard RFC 4836) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download DOT3-MAU-MIB