ATM-MIB

All MIBs › ATM-MIB

Organization: IETF AToMMIB Working Group

Last Updated: 1998-02-28

Category: ATM, Network Interfaces

Description: Defines managed objects for managing Asynchronous Transfer Mode (ATM) interfaces, virtual connections, and ATM cross-connects.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring ATM-MIB with a free 30-day trial of IPNetwork Monitor.

What Is ATM-MIB?

ATM-MIB is an IETF standards-track module defining managed objects for Asynchronous Transfer Mode (ATM) interfaces, virtual path/channel connections (VPCs/VCCs), ATM cross-connects, and AAL5 entities and connections. It belongs to the WAN/carrier transport technology area and is vendor-neutral, covering any device implementing ATM interfaces. It exposes configuration and capacity data through objects like atmInterfaceConfTable/Entry -- including atmInterfaceMaxVpcs, atmInterfaceMaxVccs, atmInterfaceConfVpcs, and atmInterfaceConfVccs -- letting an administrator monitor how many virtual circuits an ATM interface supports versus how many are currently configured, along with addressing objects such as atmInterfaceAddressType and atmInterfaceAdminAddress for interface identity/status. While its primary focus is virtual-connection configuration and capacity rather than deep hardware sensors, it is essential for confirming interface-level connection health and utilization on ATM transport equipment. It depends on the standard Interfaces MIB (IF-MIB) for underlying interface indexing and typically works alongside AAL5-specific counters for cell/frame statistics, and network engineers who load the ATM-MIB MIB module into their management station alongside IF-MIB gain immediate access to the atmInterfaceConfTable objects needed for circuit capacity monitoring. It is deployed in legacy carrier and enterprise WAN environments that still run ATM-based transport (e.g. DSL aggregation backhaul, legacy WAN links).

IPNetwork Monitor allows you to monitor SNMP objects defined in 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
ATM switches and WAN interface cards
DSL/ATM aggregation equipment

Monitoring Examples

An administrator polling atmInterfaceConfTable/atmInterfaceConfEntry can compare atmInterfaceConfVpcs and atmInterfaceConfVccs (currently configured virtual paths/channels) against atmInterfaceMaxVpcs and atmInterfaceMaxVccs (interface capacity limits) to detect when an ATM interface is approaching its configured VPC/VCC capacity. Checking atmInterfaceMaxActiveVpiBits and atmInterfaceMaxActiveVciBits reveals the addressing range supported, useful when troubleshooting circuit provisioning failures. atmInterfaceIlmiVpi/Vci identify the ILMI management channel, and atmInterfaceAddressType/atmInterfaceAdminAddress expose the interface's administrative ATM address for connectivity verification.

What Can Be Monitored

configured VPCs/VCCs per interface
maximum supported VPCs/VCCs
active VPI/VCI addressing bits
ILMI VPI/VCI management channel
ATM interface administrative address
ATM cross-connect and AAL5 connection state

Imported Objects

From ATM-TC-MIB

AtmAddr
AtmConnCastType
AtmConnKind
AtmTrafficDescrParamIndex
AtmVcIdentifier
AtmVorXAdminStatus
AtmVorXLastChange
AtmVorXOperStatus
AtmVpIdentifier

From IF-MIB

InterfaceIndex

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
Integer32
MODULE-IDENTITY
OBJECT-TYPE
mib-2

From SNMPv2-TC

RowStatus
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using atmInterfaceConfVpcs OID:

Select a device implementing ATM-MIB as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type atmInterfaceConfVpcs into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. It reports the number of virtual path connections (VPCs) currently in use on this ATM interface. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is an INTEGER-type OID, Value bounds is the most useful condition here — trigger an alert if the count approaches the interface's configured VPC capacity (e.g. above 90% of the maximum), to catch exhaustion before new VPCs can no longer be established. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
C32 aal5VccCrcErrors	1.3.6.1.2.1.37.1.12.1.3	Counter32	read-only	CRC errors.
aal5VccEntry	1.3.6.1.2.1.37.1.12.1		not-accessible	AAL5 VCC entry.
aal5VccGroup	1.3.6.1.2.1.37.2.1.9			AAL5 VCC group.
C32 aal5VccOverSizedSDUs	1.3.6.1.2.1.37.1.12.1.5	Counter32	read-only	Oversized SDUs.
C32 aal5VccSarTimeOuts	1.3.6.1.2.1.37.1.12.1.4	Counter32	read-only	SAR timeouts.
aal5VccTable	1.3.6.1.2.1.37.1.12		not-accessible	AAL5 VCC table.
OID aal5VccVci	1.3.6.1.2.1.37.1.12.1.2	AtmVcIdentifier	not-accessible	VCI.
OID aal5VccVpi	1.3.6.1.2.1.37.1.12.1.1	AtmVpIdentifier	not-accessible	VPI.
ATM atmInterfaceAdminAddress	1.3.6.1.2.1.37.1.2.1.10	AtmAddr	read-only	Admin address.
atmInterfaceConfEntry	1.3.6.1.2.1.37.1.2.1		not-accessible	ATM interface configuration entry.
atmInterfaceConfGroup2	1.3.6.1.2.1.37.2.1.2			ATM interface configuration group.
atmInterfaceConfTable	1.3.6.1.2.1.37.1.2		not-accessible	ATM interface configuration table.
I32 atmInterfaceConfVccs	1.3.6.1.2.1.37.1.2.1.4	Integer32	read-only	Configured VCCs.
I32 atmInterfaceConfVpcsEx	1.3.6.1.2.1.37.1.2.1.3	Integer32	read-only	Configured VPCs.
I32 atmInterfaceCurrentMaxVciBits	1.3.6.1.2.1.37.1.2.1.8	Integer32	read-only	Current max VCI bits.
I32 atmInterfaceCurrentMaxVpiBits	1.3.6.1.2.1.37.1.2.1.7	Integer32	read-only	Current max VPI bits.
INT atmInterfaceDs3PlcpAlarmState	1.3.6.1.2.1.37.1.4.1.2	INTEGER	read-only	DS3 PLCP alarm state.
atmInterfaceDs3PlcpEntry	1.3.6.1.2.1.37.1.4.1		not-accessible	ATM Interface DS3 PLCP entry.
C32 atmInterfaceDs3PlcpSEFs	1.3.6.1.2.1.37.1.4.1.1	Counter32	read-only	DS3 PLCP severely errored framing events.
atmInterfaceDs3PlcpTable	1.3.6.1.2.1.37.1.4		not-accessible	ATM Interface DS3 PLCP table.
I32 atmInterfaceMaxActiveVciBits	1.3.6.1.2.1.37.1.2.1.6	Integer32	read-only	Max active VCI bits.
I32 atmInterfaceMaxActiveVpiBits	1.3.6.1.2.1.37.1.2.1.5	Integer32	read-only	Max active VPI bits.
I32 atmInterfaceMaxVccs	1.3.6.1.2.1.37.1.2.1.2	Integer32	read-write	Max VCCs.
I32 atmInterfaceMaxVpcs	1.3.6.1.2.1.37.1.2.1.1	Integer32	read-write	Max VPCs.
OCT atmInterfaceMyNeighborIfName	1.3.6.1.2.1.37.1.2.1.12	OCTET STRING	read-write	Neighbor interface name.
INT atmInterfaceMyNeighborIpAddress	1.3.6.1.2.1.37.1.2.1.11	INTEGER	read-write	Neighbor IP address.
C32 atmInterfaceOCDEvents	1.3.6.1.2.1.37.1.3.1.1	Counter32	read-only	OCD events.
ATM atmInterfaceSubscrAddress	1.3.6.1.2.1.37.1.2.1.9	AtmAddr	read-write	Subscriber address.
INT atmInterfaceTCAlarmState	1.3.6.1.2.1.37.1.3.1.2	INTEGER	read-only	TC alarm state.
atmInterfaceTCEntry	1.3.6.1.2.1.37.1.3.1		not-accessible	ATM Interface TC entry.
atmInterfaceTCGroup	1.3.6.1.2.1.37.2.1.8			ATM TC group.
atmInterfaceTCTable	1.3.6.1.2.1.37.1.3		not-accessible	ATM Interface TC table.
INT atmInterfaceType	1.3.6.1.2.1.37.1.2.1.13	INTEGER	read-write	Interface type.
atmMIB	1.3.6.1.2.1.37			ATM Management Information Base.
atmMIBCompliances	1.3.6.1.2.1.37.2.2
atmMIBConformance	1.3.6.1.2.1.37.2
atmMIBGroups	1.3.6.1.2.1.37.2.1
atmMIBObjects	1.3.6.1.2.1.37.1
atmNoClpNoScr	1.3.6.1.2.1.37.1.20
INT atmServiceCategory	1.3.6.1.2.1.37.1.5.1.9	INTEGER	read-create	Service category.
atmTCAlarmGroup	1.3.6.1.2.1.37.2.1.7			ATM TC alarm group.
atmTrafficDescrGroup2	1.3.6.1.2.1.37.2.1.3			ATM traffic descriptor group.
I32 atmTrafficDescrParam1	1.3.6.1.2.1.37.1.5.1.3	Integer32	read-create	Traffic descriptor param 1.
I32 atmTrafficDescrParam2	1.3.6.1.2.1.37.1.5.1.4	Integer32	read-create	Traffic descriptor param 2.
I32 atmTrafficDescrParam3	1.3.6.1.2.1.37.1.5.1.5	Integer32	read-create	Traffic descriptor param 3.
I32 atmTrafficDescrParam4	1.3.6.1.2.1.37.1.5.1.6	Integer32	read-create	Traffic descriptor param 4.
I32 atmTrafficDescrParam5	1.3.6.1.2.1.37.1.5.1.7	Integer32	read-create	Traffic descriptor param 5.
atmTrafficDescrParamEntry	1.3.6.1.2.1.37.1.5.1		not-accessible	ATM traffic descriptor entry.
ATM atmTrafficDescrParamIndex	1.3.6.1.2.1.37.1.5.1.1	AtmTrafficDescrParamIndex	not-accessible	Traffic descriptor param index.
atmTrafficDescrParamTable	1.3.6.1.2.1.37.1.5		not-accessible	ATM traffic descriptor table.
ROW atmTrafficDescrRowStatus	1.3.6.1.2.1.37.1.5.1.8	RowStatus	read-create	Row status.
OID atmTrafficDescrType	1.3.6.1.2.1.37.1.5.1.2	OBJECT IDENTIFIER	read-create	Traffic descriptor type.
T/F atmTrafficFrameDiscard	1.3.6.1.2.1.37.1.5.1.10	TruthValue	read-create	Frame discard.
I32 atmVccAal5CpcsReceiveSduSize	1.3.6.1.2.1.37.1.7.1.10	Integer32	read-create	AAL5 CPCS receive SDU size.
I32 atmVccAal5CpcsTransmitSduSize	1.3.6.1.2.1.37.1.7.1.9	Integer32	read-create	AAL5 CPCS transmit SDU size.
INT atmVccAal5EncapsType	1.3.6.1.2.1.37.1.7.1.11	INTEGER	read-create	AAL5 encapsulation type.
INT atmVccAalType	1.3.6.1.2.1.37.1.7.1.8	INTEGER	read-create	AAL type.
ATM atmVcCrossConnectAdminStatus	1.3.6.1.2.1.37.1.10.1.8	AtmVorXAdminStatus	read-create	Admin status.
atmVcCrossConnectEntry	1.3.6.1.2.1.37.1.10.1		not-accessible	VC cross connect entry.
ATM atmVcCrossConnectH2LOperStatus	1.3.6.1.2.1.37.1.10.1.10	AtmVorXOperStatus	read-only	H2L oper status.
NUM atmVcCrossConnectHighIfIndex	1.3.6.1.2.1.37.1.10.1.5	InterfaceIndex	not-accessible	High if index.
OID atmVcCrossConnectHighVci	1.3.6.1.2.1.37.1.10.1.7	AtmVcIdentifier	not-accessible	High VCI.
OID atmVcCrossConnectHighVpi	1.3.6.1.2.1.37.1.10.1.6	AtmVpIdentifier	not-accessible	High VPI.
I32 atmVcCrossConnectIndex	1.3.6.1.2.1.37.1.10.1.1	Integer32	not-accessible	Cross connect index.
ATM atmVcCrossConnectL2HOperStatus	1.3.6.1.2.1.37.1.10.1.9	AtmVorXOperStatus	read-only	L2H oper status.
NUM atmVcCrossConnectLowIfIndex	1.3.6.1.2.1.37.1.10.1.2	InterfaceIndex	not-accessible	Low if index.
OID atmVcCrossConnectLowVci	1.3.6.1.2.1.37.1.10.1.4	AtmVcIdentifier	not-accessible	Low VCI.
OID atmVcCrossConnectLowVpi	1.3.6.1.2.1.37.1.10.1.3	AtmVpIdentifier	not-accessible	Low VPI.
ROW atmVcCrossConnectRowStatus	1.3.6.1.2.1.37.1.10.1.11	RowStatus	read-create	Row status.
atmVcCrossConnectTable	1.3.6.1.2.1.37.1.10		not-accessible	VC cross connect table.
ATM atmVclAdminStatus	1.3.6.1.2.1.37.1.7.1.3	AtmVorXAdminStatus	read-create	Admin status.
ATM atmVclCastType	1.3.6.1.2.1.37.1.7.1.14	AtmConnCastType	read-create	Cast type.
ATM atmVclConnKind	1.3.6.1.2.1.37.1.7.1.15	AtmConnKind	read-only	Connection kind.
atmVclCrossConnectGroup	1.3.6.1.2.1.37.2.1.5			ATM VCL cross connect group.
I32 atmVclCrossConnectIdentifier	1.3.6.1.2.1.37.1.7.1.12	Integer32	read-only	Cross connect identifier.
atmVclEntry	1.3.6.1.2.1.37.1.7.1		not-accessible	ATM VCL entry.
ATM atmVclLastChange	1.3.6.1.2.1.37.1.7.1.5	AtmVorXLastChange	read-only	Last change.
ATM atmVclOperStatus	1.3.6.1.2.1.37.1.7.1.4	AtmVorXOperStatus	read-only	Oper status.
ATM atmVclReceiveTrafficDescrIndex	1.3.6.1.2.1.37.1.7.1.6	AtmTrafficDescrParamIndex	read-create	Receive traffic descriptor index.
ROW atmVclRowStatus	1.3.6.1.2.1.37.1.7.1.13	RowStatus	read-create	Row status.
atmVclTable	1.3.6.1.2.1.37.1.7		not-accessible	ATM VCL table.
atmVclTerminationGroup2	1.3.6.1.2.1.37.2.1.4			ATM VCL termination group.
ATM atmVclTransmitTrafficDescrIndex	1.3.6.1.2.1.37.1.7.1.7	AtmTrafficDescrParamIndex	read-create	Transmit traffic descriptor index.
OID atmVclVci	1.3.6.1.2.1.37.1.7.1.2	AtmVcIdentifier	not-accessible	VCI.
OID atmVclVpi	1.3.6.1.2.1.37.1.7.1.1	AtmVpIdentifier	not-accessible	VPI.
atmVcPvcCrossConnectGroup	1.3.6.1.2.1.37.2.1.6			ATM VC PVC cross connect group.
ATM atmVpCrossConnectAdminStatus	1.3.6.1.2.1.37.1.8.1.6	AtmVorXAdminStatus	read-create	Admin status.
atmVpCrossConnectEntry	1.3.6.1.2.1.37.1.8.1		not-accessible	VP cross connect entry.
ATM atmVpCrossConnectH2LOperStatus	1.3.6.1.2.1.37.1.8.1.8	AtmVorXOperStatus	read-only	H2L oper status.
NUM atmVpCrossConnectHighIfIndex	1.3.6.1.2.1.37.1.8.1.4	InterfaceIndex	not-accessible	High if index.
OID atmVpCrossConnectHighVpi	1.3.6.1.2.1.37.1.8.1.5	AtmVpIdentifier	not-accessible	High VPI.
I32 atmVpCrossConnectIndex	1.3.6.1.2.1.37.1.8.1.1	Integer32	not-accessible	Cross connect index.
ATM atmVpCrossConnectL2HOperStatus	1.3.6.1.2.1.37.1.8.1.7	AtmVorXOperStatus	read-only	L2H oper status.
NUM atmVpCrossConnectLowIfIndex	1.3.6.1.2.1.37.1.8.1.2	InterfaceIndex	not-accessible	Low if index.
OID atmVpCrossConnectLowVpi	1.3.6.1.2.1.37.1.8.1.3	AtmVpIdentifier	not-accessible	Low VPI.
ROW atmVpCrossConnectRowStatus	1.3.6.1.2.1.37.1.8.1.9	RowStatus	read-create	Row status.
atmVpCrossConnectTable	1.3.6.1.2.1.37.1.8		not-accessible	VP cross connect table.
ATM atmVplAdminStatus	1.3.6.1.2.1.37.1.6.1.2	AtmVorXAdminStatus	read-create	Admin status.
ATM atmVplCastType	1.3.6.1.2.1.37.1.6.1.9	AtmConnCastType	read-create	Cast type.
ATM atmVplConnKind	1.3.6.1.2.1.37.1.6.1.10	AtmConnKind	read-only	Connection kind.
atmVplCrossConnectGroup	1.3.6.1.2.1.37.2.1.10			ATM VPL cross connect group.
I32 atmVplCrossConnectIdentifier	1.3.6.1.2.1.37.1.6.1.7	Integer32	read-only	Cross connect identifier.
atmVplEntry	1.3.6.1.2.1.37.1.6.1		not-accessible	ATM VPL entry.
ATM atmVplLastChange	1.3.6.1.2.1.37.1.6.1.4	AtmVorXLastChange	read-only	Last change.
ATM atmVplOperStatus	1.3.6.1.2.1.37.1.6.1.3	AtmVorXOperStatus	read-only	Oper status.
ATM atmVplReceiveTrafficDescrIndex	1.3.6.1.2.1.37.1.6.1.5	AtmTrafficDescrParamIndex	read-create	Receive traffic descriptor index.
ROW atmVplRowStatus	1.3.6.1.2.1.37.1.6.1.8	RowStatus	read-create	Row status.
atmVplTable	1.3.6.1.2.1.37.1.6		not-accessible	ATM VPL table.
ATM atmVplTransmitTrafficDescrIndex	1.3.6.1.2.1.37.1.6.1.6	AtmTrafficDescrParamIndex	read-create	Transmit traffic descriptor index.
OID atmVplVpi	1.3.6.1.2.1.37.1.6.1.1	AtmVpIdentifier	not-accessible	VPI.
atmVpPvcCrossConnectGroup	1.3.6.1.2.1.37.2.1.11			ATM VP PVC cross connect group.

RFC description

IETF standard MIB (RFC 2515) for managing ATM interfaces, permanent virtual connections, and ATM network devices.

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