MPLS-LC-ATM-MIB

All MIBs › MPLS-LC-ATM-MIB

Organization: Multiprotocol Label Switching (MPLS) Working Group

Last Updated: 2002-05-10

Description: MPLS-LC-ATM-MIB module

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What Is MPLS-LC-ATM-MIB?

MPLS-LC-ATM-MIB is an IETF standards-track MIB defined by RFC 3035 for MPLS Label Controlled ATM (LC-ATM) interfaces, covering interfaces where MPLS labels are carried using ATM VPI/VCI values instead of a shim header. It exposes configuration data for LC-ATM interfaces, including per-interface control VPI/VCI ranges, unlabeled traffic VPI/VCI values, and VC-merge capability, alongside conformance/notification groups. Its monitoring value is primarily configuration and interface-state oriented — letting an administrator confirm an ATM interface's MPLS label-space configuration (control and unlabeled-traffic VPI/VCI ranges) and VC-merge support rather than exposing hardware health counters directly, though row status reflects operational readiness of the configured interface. It is explicitly dependent on the broader MPLS MIB framework (e.g., an MPLS label-switching router MIB) since LC-ATM interfaces are a specialized extension of general MPLS label switching. It would be deployed on MPLS-capable ATM switches/routers in service-provider networks using ATM-based MPLS label switching, a technology largely superseded by MPLS over Ethernet/Frame Relay in modern networks, though the MPLS-LC-ATM-MIB RFC (RFC 3035) remains the reference definition for engineers maintaining legacy ATM-based MPLS deployments.

IPNetwork Monitor allows you to monitor SNMP objects defined in MPLS-LC-ATM-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
MPLS-capable ATM switches/routers

Monitoring Examples

An administrator would poll mplsLcAtmIfConfTable/mplsLcAtmIfConfEntry to check a given LC-ATM interface's mplsLcAtmCtrlVpi/mplsLcAtmCtrlVci (control channel VPI/VCI), mplsLcAtmUnlabTrafVpi/mplsLcAtmUnlabTrafVci (unlabeled traffic VPI/VCI), and mplsLcAtmVcMerge setting to confirm the interface is correctly provisioned for MPLS label switching over ATM. An unexpected mplsLcAtmIfConfRowStatus value, such as notInService, would indicate the LC-ATM interface configuration failed to activate, which would explain MPLS traffic not being label-switched correctly on that ATM link.

What Can Be Monitored

LC-ATM interface control VPI/VCI configuration
unlabeled traffic VPI/VCI configuration
VC-merge capability
interface row/activation status

Imported Objects

From ATM-TC-MIB

AtmVpIdentifier

From MPLS-LSR-MIB

mplsInterfaceConfIndex

OBJECT-TYPE

From MPLS-TC-MIB

MplsAtmVcIdentifier
mplsMIB	OBJECT-IDENTITY

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

RowStatus
StorageType
TruthValue

OIDs

OID symbolic	OID numeric	Type	Access	Description
mplsLcAtmMIB	1.3.6.1.2.1.10.9999.6			This MIB contains managed object definitions for MPLS Label Controlled ATM interfaces as defined in RFC3035.
mplsLcAtmNotifyPrefix	1.3.6.1.2.1.10.9999.6.0
mplsLcAtmObjects	1.3.6.1.2.1.10.9999.6.1
mplsLcAtmIfConfTable	1.3.6.1.2.1.10.9999.6.1.1		not-accessible	This table specifies per-interface MPLS LC-ATM capability and associated information. In particular, this table extends the MPLS-LSR MIB's mplsInterfaceConfTable.
mplsLcAtmIfConfEntry	1.3.6.1.2.1.10.9999.6.1.1.1		not-accessible	An entry in this table is created by an LSR for every interface capable of supporting MPLS LC-ATM. Each entry in this table will exist only if a corresponding entry in ifTable and mplsInterfaceConfTable exist. If the associated entries in ifTable and mplsInterfaceConfTable are deleted, the corresponding entry in this table must also be deleted shortly thereafter.
OID mplsLcAtmCtrlVpi	1.3.6.1.2.1.10.9999.6.1.1.1.1	AtmVpIdentifier	read-create	This is the VPI value over which this LSR is willing to accept control traffic on this interface.
OID mplsLcAtmCtrlVci	1.3.6.1.2.1.10.9999.6.1.1.1.2	MplsAtmVcIdentifier	read-create	This is the VCI value over which this LSR is willing to accept control traffic on this interface.
OID mplsLcAtmUnlabTrafVpi	1.3.6.1.2.1.10.9999.6.1.1.1.3	AtmVpIdentifier	read-create	This is the max VPI value over which this LSR is willing to accept unlabeled traffic on this interface.
OID mplsLcAtmUnlabTrafVci	1.3.6.1.2.1.10.9999.6.1.1.1.4	MplsAtmVcIdentifier	read-create	This is the VCI value over which this LSR is willing to accept unlabled traffic on this interface.
T/F mplsLcAtmVcMerge	1.3.6.1.2.1.10.9999.6.1.1.1.5	TruthValue	read-create	If set to true(0), indicates that this interface is capabile of ATM VC merge, otherwise it MUST be set to false(1).
ROW mplsLcAtmIfConfRowStatus	1.3.6.1.2.1.10.9999.6.1.1.1.6	RowStatus	read-create	This is object is used to create and delete entries in this table. When configuring entries in this table, the corresponding corresponding ifEntry and mplsInterfaceConfEntry MUST exist before hand. If an entry is attempted to be created by a manager for a corresponding mplsInterfaceConfEntry that does not support LC-ATM, the agent MUST return an inconsistentValue error. If this table is implemented read-only, then the agent must set this object to active(1) when this row is made active. If this table is implemented writable, then an agent MUST not allow modification to its objects once this value is set to active(1).
STO mplsLcAtmIfConfStoreType	1.3.6.1.2.1.10.9999.6.1.1.1.7	StorageType	read-create	This SNMP storage type for this entry. All objects are writable for permanent objects.
mplsLcAtmNotifications	1.3.6.1.2.1.10.9999.6.2
mplsLcAtmConformance	1.3.6.1.2.1.10.9999.6.3
mplsLcAtmGroups	1.3.6.1.2.1.10.9999.6.3.1
mplsLcAtmIfGroup	1.3.6.1.2.1.10.9999.6.3.1.1			Collection of objects needed for MPLS LC-ATM interface configuration.
mplsLcAtmCompliances	1.3.6.1.2.1.10.9999.6.3.2
mplsLcAtmModuleCompliance	1.3.6.1.2.1.10.9999.6.3.2.1			Compliance statement for agents that support MPLS LC-ATM Interfaces.

RFC description

Manages MPLS Label Controlled ATM interfaces as defined in RFC3035.

Start monitoring Vendor-neutral IETF standard (MPLS-capable ATM switch/router, Label Controlled ATM) 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 MPLS-LC-ATM-MIB

What Is MPLS-LC-ATM-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

RFC description