LLDP-EXT-DOT3-MIB

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Organization: IEEE 802.1 Working Group

Last Updated: 2005-05-06

Category: Protocol: LLDP, Standard: IEEE 802

Description: IEEE 802.3 LLDP extension MIB defining TLV objects for Ethernet-specific attributes including MAC/PHY, power, and link aggregation.

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What Is LLDP-EXT-DOT3-MIB?

LLDP-EXT-DOT3-MIB is an IEEE standards-based extension to the LLDP-MIB (published as Annex G.6.1 of IEEE 802.1AB-2005) that adds IEEE 802.3 Ethernet-specific TLV objects to the Link Layer Discovery Protocol, covering MAC/PHY configuration, power-via-MDI (PoE), and link aggregation attributes advertised between directly connected devices. It exposes both configuration objects (which TLVs are enabled for transmission) and local/remote operational data describing a port's auto-negotiation capability, operating MAU type, and power class. In monitoring terms it supports discovering and verifying the physical-layer and power status of neighboring devices, such as whether auto-negotiation is enabled and what speed/duplex was actually negotiated, and whether a port is a PoE power source or sink and its power class — useful for spotting duplex mismatches or unexpected PoE device connections. It is a direct extension of, and depends on, the base IEEE 802.1AB LLDP-MIB for the core discovery framework, and consulting the LLDP-EXT-DOT3-MIB OID list helps an operator map each dot3 TLV object to its corresponding IEEE 802.3 attribute during troubleshooting. It is deployed on Ethernet switches, routers, and IP phones/PoE endpoints across virtually any vendor's equipment that supports LLDP.

IPNetwork Monitor allows you to monitor SNMP objects defined in LLDP-EXT-DOT3-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

vendor-neutral, standards-based MIB, not tied to a specific manufacturer — applies to Ethernet switches, routers, and PoE endpoints supporting LLDP

Monitoring Examples

An operator would poll lldpXdot3LocPortTable/lldpXdot3LocPortEntry to check lldpXdot3LocPortAutoNegEnabled and lldpXdot3LocPortOperMauType, confirming a port has actually negotiated the expected speed/duplex rather than falling back to a slower mode. lldpXdot3LocPowerTable/lldpXdot3LocPowerPortClass would be checked on a PoE switch port to confirm the power class advertised to or requested by a connected device such as an IP phone. lldpXdot3PortConfigTLVsTxEnable controls which of these TLVs the local device advertises to its neighbor in the first place.

What Can Be Monitored

auto-negotiation status and capability
operating MAU (speed/duplex) type
PoE power class
advertised TLV configuration

Imported Objects

From LLDP-MIB

lldpExtensions	OBJECT-IDENTITY
lldpLocPortNum	OBJECT-TYPE
lldpPortConfigEntry	OBJECT-TYPE
lldpRemIndex	OBJECT-TYPE
lldpRemLocalPortNum	OBJECT-TYPE
lldpRemTimeMark	OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

TEXTUAL-CONVENTION
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
lldpXdot3Compliance	1.0.8802.1.1.2.1.5.4623.2.1.1			The compliance statement for SNMP entities which implement the LLDP 802.3 organizational extension MIB.
lldpXdot3Compliances	1.0.8802.1.1.2.1.5.4623.2.1
lldpXdot3Config	1.0.8802.1.1.2.1.5.4623.1.1
lldpXdot3ConfigGroup	1.0.8802.1.1.2.1.5.4623.2.2.1			The collection of objects which are used to configure the LLDP 802.3 organizational extension implementation behavior. This group is mandatory for agents which implement the LLDP 802.3 organizational extension.
lldpXdot3Conformance	1.0.8802.1.1.2.1.5.4623.2
lldpXdot3Groups	1.0.8802.1.1.2.1.5.4623.2.2
lldpXdot3LocalData	1.0.8802.1.1.2.1.5.4623.1.2
lldpXdot3LocLinkAggEntry	1.0.8802.1.1.2.1.5.4623.1.2.3.1		not-accessible	Link Aggregation information about a particular port component.
I32 lldpXdot3LocLinkAggPortId	1.0.8802.1.1.2.1.5.4623.1.2.3.1.2	Integer32	read-only	This object contains the IEEE 802.3 aggregated port identifier, aAggPortID (IEEE 802.3-2002, 30.7.2.1.1), derived from the ifNumber of the ifIndex for the port component in link aggregation. If the port is not in link aggregation state and/or it does not support link aggregation, this value should be set to zero.
LLD lldpXdot3LocLinkAggStatus	1.0.8802.1.1.2.1.5.4623.1.2.3.1.1	LldpLinkAggStatusMap	read-only	The bitmap value contains the link aggregation capabilities and the current aggregation status of the link.
lldpXdot3LocLinkAggTable	1.0.8802.1.1.2.1.5.4623.1.2.3		not-accessible	This table contains one row per port of link aggregation information (as a part of the LLDP 802.3 organizational extension) on the local system known to this agent.
I32 lldpXdot3LocMaxFrameSize	1.0.8802.1.1.2.1.5.4623.1.2.4.1.1	Integer32	read-only	An integer value indicating the maximum supported frame size in octets on the given port of the local system.
lldpXdot3LocMaxFrameSizeEntry	1.0.8802.1.1.2.1.5.4623.1.2.4.1		not-accessible	Maximum Frame Size information about a particular port component.
lldpXdot3LocMaxFrameSizeTable	1.0.8802.1.1.2.1.5.4623.1.2.4		not-accessible	This table contains one row per port of maximum frame size information (as a part of the LLDP 802.3 organizational extension) on the local system known to this agent.
OCT lldpXdot3LocPortAutoNegAdvertisedCap	1.0.8802.1.1.2.1.5.4623.1.2.1.1.3	OCTET STRING	read-only	This object contains the value (bitmap) of the ifMauAutoNegCapAdvertisedBits object (defined in IETF RFC 3636) which is associated with the given port on the local system.
T/F lldpXdot3LocPortAutoNegEnabled	1.0.8802.1.1.2.1.5.4623.1.2.1.1.2	TruthValue	read-only	The truth value used to indicate whether port Auto-negotiation is enabled on the given port associated with the local system.
T/F lldpXdot3LocPortAutoNegSupported	1.0.8802.1.1.2.1.5.4623.1.2.1.1.1	TruthValue	read-only	The truth value used to indicate whether the given port (associated with the local system) supports Auto-negotiation.
lldpXdot3LocPortEntry	1.0.8802.1.1.2.1.5.4623.1.2.1.1		not-accessible	Information about a particular port component.
I32 lldpXdot3LocPortOperMauType	1.0.8802.1.1.2.1.5.4623.1.2.1.1.4	Integer32	read-only	An integer value that indicates the operational MAU type of the given port on the local system. This object contains the integer value derived from the list position of the corresponding dot3MauType as listed in IETF RFC 3636 (or subsequent revisions) and is equal to the last number in the respective dot3MauType OID. For example, if the ifMauType object is dot3MauType1000BaseTHD which corresponds to {dot3MauType 29}, the numerical value of this field will be 29. For MAU types not listed in RFC 3636 (or subsequent revisions), the value of this field shall be set to zero.
lldpXdot3LocPortTable	1.0.8802.1.1.2.1.5.4623.1.2.1		not-accessible	This table contains one row per port of Ethernet port information (as a part of the LLDP 802.3 organizational extension) on the local system known to this agent.
I32 lldpXdot3LocPowerClass	1.0.8802.1.1.2.1.5.4623.1.2.2.1.6	Integer32	read-only	This object contains the value of the pethPsePortPowerClassifications object (defined in IETF RFC 3621) which is associated with the given port on the local system.
lldpXdot3LocPowerEntry	1.0.8802.1.1.2.1.5.4623.1.2.2.1		not-accessible	Information about a particular port component.
T/F lldpXdot3LocPowerMDIEnabled	1.0.8802.1.1.2.1.5.4623.1.2.2.1.3	TruthValue	read-only	The truth value used to identify whether MDI power is enabled on the given port associated with the local system.
T/F lldpXdot3LocPowerMDISupported	1.0.8802.1.1.2.1.5.4623.1.2.2.1.2	TruthValue	read-only	The truth value used to indicate whether the MDI power is supported on the given port associated with the local system.
T/F lldpXdot3LocPowerPairControlable	1.0.8802.1.1.2.1.5.4623.1.2.2.1.4	TruthValue	read-only	The truth value is derived from the value of pethPsePortPowerPairsControlAbility object (defined in IETF RFC 3621) and is used to indicate whether the pair selection can be controlled on the given port associated with the local system.
I32 lldpXdot3LocPowerPairs	1.0.8802.1.1.2.1.5.4623.1.2.2.1.5	Integer32	read-only	This object contains the value of the pethPsePortPowerPairs object (defined in IETF RFC 3621) which is associated with the given port on the local system.
LLD lldpXdot3LocPowerPortClass	1.0.8802.1.1.2.1.5.4623.1.2.2.1.1	LldpPowerPortClass	read-only	The value that identifies the port Class of the given port associated with the local system.
lldpXdot3LocPowerTable	1.0.8802.1.1.2.1.5.4623.1.2.2		not-accessible	This table contains one row per port of power ethernet information (as a part of the LLDP 802.3 organizational extension) on the local system known to this agent.
lldpXdot3LocSysGroup	1.0.8802.1.1.2.1.5.4623.2.2.2			The collection of objects which are used to represent LLDP 802.3 organizational extension Local Device Information. This group is mandatory for agents which implement the LLDP 802.3 organizational extension in the TX mode.
lldpXdot3MIB	1.0.8802.1.1.2.1.5.4623			The LLDP Management Information Base extension module for IEEE 802.3 organizationally defined discovery information. In order to assure the uniqueness of the LLDP-MIB, lldpXdot3MIB is branched from lldpExtensions using OUI value as the node. An OUI/'company_id' is a 24 bit globally unique assigned number referenced by various standards. Copyright (C) IEEE (2005). This version of this MIB module is published as Annex G.6.1 of IEEE Std 802.1AB-2005; see the standard itself for full legal notices.
lldpXdot3Objects	1.0.8802.1.1.2.1.5.4623.1
lldpXdot3PortConfigEntry	1.0.8802.1.1.2.1.5.4623.1.1.1.1		not-accessible	LLDP configuration information that controls the transmission of IEEE 802.3 organizationally defined TLVs on LLDP transmission capable ports. This configuration object augments the lldpPortConfigEntry of the LLDP-MIB, therefore it is only present along with the port configuration defined by the associated lldpPortConfigEntry entry. Each active lldpXdot3PortConfigEntry must be from non-volatile storage (along with the corresponding lldpPortConfigEntry) after a re-initialization of the management system.
lldpXdot3PortConfigTable	1.0.8802.1.1.2.1.5.4623.1.1.1		not-accessible	A table that controls selection of LLDP TLVs to be transmitted on individual ports.
BIT lldpXdot3PortConfigTLVsTxEnable	1.0.8802.1.1.2.1.5.4623.1.1.1.1.1	Bits	read-write	The lldpXdot3PortConfigTLVsTxEnable, defined as a bitmap, includes the IEEE 802.3 organizationally defined set of LLDP TLVs whose transmission is allowed on the local LLDP agent by the network management. Each bit in the bitmap corresponds to an IEEE 802.3 subtype associated with a specific IEEE 802.3 optional TLV. The bit 0 is not used since there is no corresponding subtype. The bit 'macPhyConfigStatus(0)' indicates that LLDP agent should transmit 'MAC/PHY configuration/status TLV'. The bit 'powerViaMDI(1)' indicates that LLDP agent should transmit 'Power via MDI TLV'. The bit 'linkAggregation(2)' indicates that LLDP agent should transmit 'Link Aggregation TLV'. The bit 'maxFrameSize(3)' indicates that LLDP agent should transmit 'Maximum-frame-size TLV'. The default value for lldpXdot3PortConfigTLVsTxEnable object is an empty set, which means no enumerated values are set. The value of this object must be restored from non-volatile storage after a re-initialization of the management system.
lldpXdot3RemLinkAggEntry	1.0.8802.1.1.2.1.5.4623.1.3.3.1		not-accessible	Link Aggregation information about remote system's port component.
I32 lldpXdot3RemLinkAggPortId	1.0.8802.1.1.2.1.5.4623.1.3.3.1.2	Integer32	read-only	This object contains the IEEE 802.3 aggregated port identifier, aAggPortID (IEEE 802.3-2002, 30.7.2.1.1), derived from the ifNumber of the ifIndex for the port component associated with the remote system. If the remote port is not in link aggregation state and/or it does not support link aggregation, this value should be zero.
LLD lldpXdot3RemLinkAggStatus	1.0.8802.1.1.2.1.5.4623.1.3.3.1.1	LldpLinkAggStatusMap	read-only	The bitmap value contains the link aggregation capabilities and the current aggregation status of the link.
lldpXdot3RemLinkAggTable	1.0.8802.1.1.2.1.5.4623.1.3.3		not-accessible	This table contains port link aggregation information (as a part of the LLDP 802.3 organizational extension) of the remote system.
I32 lldpXdot3RemMaxFrameSize	1.0.8802.1.1.2.1.5.4623.1.3.4.1.1	Integer32	read-only	An integer value indicating the maximum supported frame size in octets on the port component associated with the remote system.
lldpXdot3RemMaxFrameSizeEntry	1.0.8802.1.1.2.1.5.4623.1.3.4.1		not-accessible	Maximum Frame Size information about a particular port component.
lldpXdot3RemMaxFrameSizeTable	1.0.8802.1.1.2.1.5.4623.1.3.4		not-accessible	This table contains one row per port of maximum frame size information (as a part of the LLDP 802.3 organizational extension) of the remote system.
lldpXdot3RemoteData	1.0.8802.1.1.2.1.5.4623.1.3
OCT lldpXdot3RemPortAutoNegAdvertisedCap	1.0.8802.1.1.2.1.5.4623.1.3.1.1.3	OCTET STRING	read-only	This object contains the value (bitmap) of the ifMauAutoNegCapAdvertisedBits object (defined in IETF RFC 3636) which is associated with the given port on the remote system.
T/F lldpXdot3RemPortAutoNegEnabled	1.0.8802.1.1.2.1.5.4623.1.3.1.1.2	TruthValue	read-only	The truth value used to indicate whether port Auto-negotiation is enabled on the given port associated with the remote system.
T/F lldpXdot3RemPortAutoNegSupported	1.0.8802.1.1.2.1.5.4623.1.3.1.1.1	TruthValue	read-only	The truth value used to indicate whether the given port (associated with remote system) supports Auto-negotiation.
lldpXdot3RemPortEntry	1.0.8802.1.1.2.1.5.4623.1.3.1.1		not-accessible	Information about a particular physical network connection.
I32 lldpXdot3RemPortOperMauType	1.0.8802.1.1.2.1.5.4623.1.3.1.1.4	Integer32	read-only	An integer value that indicates the operational MAU type of the sending device. This object contains the integer value derived from the list position of the corresponding dot3MauType as listed in in IETF RFC 3636 (or subsequent revisions) and is equal to the last number in the respective dot3MauType OID. For example, if the ifMauType object is dot3MauType1000BaseTHD which corresponds to {dot3MauType 29}, the numerical value of this field will be 29. For MAU types not listed in RFC 3636 (or subsequent revisions), the value of this field shall be set to zero.
lldpXdot3RemPortTable	1.0.8802.1.1.2.1.5.4623.1.3.1		not-accessible	This table contains Ethernet port information (as a part of the LLDP 802.3 organizational extension) of the remote system.
I32 lldpXdot3RemPowerClass	1.0.8802.1.1.2.1.5.4623.1.3.2.1.6	Integer32	read-only	This object contains the value of the pethPsePortPowerClassifications object (defined in IETF RFC 3621) which is associated with the given port on the remote system.
lldpXdot3RemPowerEntry	1.0.8802.1.1.2.1.5.4623.1.3.2.1		not-accessible	Information about a particular physical network connection.
T/F lldpXdot3RemPowerMDIEnabled	1.0.8802.1.1.2.1.5.4623.1.3.2.1.3	TruthValue	read-only	The truth value used to identify whether MDI power is enabled on the given port associated with the remote system.
T/F lldpXdot3RemPowerMDISupported	1.0.8802.1.1.2.1.5.4623.1.3.2.1.2	TruthValue	read-only	The truth value used to indicate whether the MDI power is supported on the given port associated with the remote system.
T/F lldpXdot3RemPowerPairControlable	1.0.8802.1.1.2.1.5.4623.1.3.2.1.4	TruthValue	read-only	The truth value is derived from the value of pethPsePortPowerPairsControlAbility object (defined in IETF RFC 3621) and is used to indicate whether the pair selection can be controlled on the given port associated with the remote system.
I32 lldpXdot3RemPowerPairs	1.0.8802.1.1.2.1.5.4623.1.3.2.1.5	Integer32	read-only	This object contains the value of the pethPsePortPowerPairs object (defined in IETF RFC 3621) which is associated with the given port on the remote system.
LLD lldpXdot3RemPowerPortClass	1.0.8802.1.1.2.1.5.4623.1.3.2.1.1	LldpPowerPortClass	read-only	The value that identifies the port Class of the given port associated with the remote system.
lldpXdot3RemPowerTable	1.0.8802.1.1.2.1.5.4623.1.3.2		not-accessible	This table contains Ethernet power information (as a part of the LLDP 802.3 organizational extension) of the remote system.
lldpXdot3RemSysGroup	1.0.8802.1.1.2.1.5.4623.2.2.3			The collection of objects which are used to represent LLDP 802.3 organizational extension Local Device Information. This group is mandatory for agents which implement the LLDP 802.3 organizational extension in the RX mode.

RFC description

IEEE 802.1AB Link Layer Discovery Protocol extension for 802.3 Ethernet devices and power delivery information.

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Download LLDP-EXT-DOT3-MIB

What Is LLDP-EXT-DOT3-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description