FUNI-MIB

All MIBs › FUNI-MIB

Organization: The ATM Forum

Last Updated: 1997-05-08

Category: ATM

Description: ATM Forum MIB for Frame-based UNI (FUNI), managing ATM access over frame-based interfaces.

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What Is FUNI-MIB?

FUNI-MIB is an ATM Forum vendor-neutral standards MIB for managing Frame-based UNI (FUNI) interfaces, a Version 2.0 logical interface type that carries ATM traffic access over frame-based (rather than cell-based) physical links. It exposes per-interface configuration objects covering FUNI mode, frame-check-sequence bit length, signaling support and VPI/VCI, ILMI support and VPI/VCI, OAM support, along with a statistics table for the interface. Its monitoring value is centered on interface configuration and operational status: funiIfConfMode and funiIfConfFcsBits describe how the frame link is configured, funiIfConfSigSupport/funiIfConfSigVpi/funiIfConfSigVci and funiIfConfIlmiSupport/funiIfConfIlmiVpi/funiIfConfIlmiVci show whether ATM signaling and ILMI management channels are enabled and how they're addressed, and funiIfStatsTable provides interface-level traffic statistics for spotting errors or unusual load. It is explicitly an ATM Forum standard, layered under the atmForum/atmForumNetworkManagement OID branch and dependent on ATM Forum UNI/ILMI conventions. It is used in legacy ATM access networks where FUNI provided a lower-cost, frame-based alternative to cell-based ATM UNI for connecting routers or access devices to an ATM network. Engineers implementing or auditing this functionality typically reference the FUNI-MIB RFC/standard documentation for the authoritative specification.

IPNetwork Monitor allows you to monitor SNMP objects defined in FUNI-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 (ATM Forum), not tied to a specific manufacturer; applies to ATM access routers/devices supporting Frame-based UNI

Monitoring Examples

An administrator would check funiIfConfTable entries (funiIfConfMode, funiIfConfSigSupport, funiIfConfIlmiSupport) to confirm a FUNI interface is configured with matching signaling and ILMI parameters expected by the ATM switch on the other end, since a VPI/VCI mismatch (funiIfConfSigVpi/funiIfConfSigVci or funiIfConfIlmiVpi/funiIfConfIlmiVci) would prevent proper call setup or management communication. Polling funiIfStatsTable reveals interface-level frame statistics, useful for spotting an unusual error rate or an unexpectedly idle link that suggests a misconfigured or down FUNI connection.

What Can Be Monitored

FUNI interface mode configuration
ATM signaling support/VPI/VCI
ILMI support/VPI/VCI
OAM support status
interface traffic statistics

Imported Objects

From IF-MIB

ifIndex

OBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Gauge32
MODULE-IDENTITY
OBJECT-TYPE
enterprises

From SNMPv2-TC

TEXTUAL-CONVENTION

How to Use in IPNetwork Monitor

Example using funiIfRxAbortedFrames OID:

Select a device implementing FUNI-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 funiIfRxAbortedFrames 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. The number of aborted frames received on this FUNI logical 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 a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases between polls, since a rising count of errors, failures, or discards often points to a real underlying problem. Click Finish to create the monitor; you can adjust any parameter later.

OIDs

OID symbolic	OID numeric	Type	Access	Description
atmForum	1.3.6.1.4.1.353
atmForumNetworkManagement	1.3.6.1.4.1.353.5
atmfFuni	1.3.6.1.4.1.353.5.6
atmfFuniMIB	1.3.6.1.4.1.353.5.6.1			The MIB module for managing a Version 2.0 FUNI logical interface.
funiMIBObjects	1.3.6.1.4.1.353.5.6.1.1
funiIfConfTable	1.3.6.1.4.1.353.5.6.1.1.1		not-accessible	A table of FUNI logical interface configuration information. This table provides objects not normally available in the IF-MIB or the ATM-MIB.
funiIfConfEntry	1.3.6.1.4.1.353.5.6.1.1.1.1		not-accessible	An entry in the FUNI logical interface configuration information table.
INT funiIfConfMode	1.3.6.1.4.1.353.5.6.1.1.1.1.1	INTEGER	read-write	This object allows the mode of operation for this FUNI logical interface to be configured.
INT funiIfConfFcsBits	1.3.6.1.4.1.353.5.6.1.1.1.1.2	INTEGER	read-write	This object specifies whether a 16- or 32-bit FCS is used in each FUNI frame header over this FUNI logical interface.
INT funiIfConfSigSupport	1.3.6.1.4.1.353.5.6.1.1.1.1.3	INTEGER	read-write	This object specifies whether support for signaling is enabled or disabled on this FUNI logical interface. A FUNI logical interface that cannot support signaling must only allow the value disabled(2). Specifying the type of signaling used on a FUNI logical interface is beyond the scope of the FUNI MIB.
FUN funiIfConfSigVpi	1.3.6.1.4.1.353.5.6.1.1.1.1.4	FuniValidVpi	read-write	This object specifies the VPI value used for signaling on this FUNI logical interface. This object is valid only if signaling is supported on this FUNI logical interface.
FUN funiIfConfSigVci	1.3.6.1.4.1.353.5.6.1.1.1.1.5	FuniValidVci	read-write	This object specifies the VCI value used for signaling on this FUNI logical interface. This object is valid only if signaling is supported on this FUNI logical interface.
INT funiIfConfIlmiSupport	1.3.6.1.4.1.353.5.6.1.1.1.1.6	INTEGER	read-write	This object specifies whether ILMI is enabled or disabled on this FUNI logical interface. A FUNI logical interface that cannot support ILMI must only allow the value disabled(2).
FUN funiIfConfIlmiVpi	1.3.6.1.4.1.353.5.6.1.1.1.1.7	FuniValidVpi	read-write	This object specifies the VPI value used for ILMI on this FUNI logical interface. This object is valid only if ILMI is supported on this FUNI logical interface.
FUN funiIfConfIlmiVci	1.3.6.1.4.1.353.5.6.1.1.1.1.8	FuniValidVci	read-write	This object specifies the VCI value used for ILMI on this FUNI logical interface. This object is valid only if ILMI is supported on this FUNI logical interface.
INT funiIfConfOamSupport	1.3.6.1.4.1.353.5.6.1.1.1.1.9	INTEGER	read-write	This object specifies whether support for OAM cell/frame translation is enabled or disabled on this FUNI logical interface. A FUNI logical interface that cannot support OAM cell/frame translation must only allow the value disabled(2).
funiIfStatsTable	1.3.6.1.4.1.353.5.6.1.1.2		not-accessible	A table of statistical information recorded at a FUNI logical interface.
funiIfStatsEntry	1.3.6.1.4.1.353.5.6.1.1.2.1		not-accessible	An entry in the FUNI logical interface statistics table.
G32 funiIfEstablishedPvccs	1.3.6.1.4.1.353.5.6.1.1.2.1.1	Gauge32	read-only	The number of permanent VCCs established on this FUNI logical interface.
G32 funiIfEstablishedSvccs	1.3.6.1.4.1.353.5.6.1.1.2.1.2	Gauge32	read-only	The number of switched VCCs established on this FUNI logical interface.
C32 funiIfRxAbortedFramesEx	1.3.6.1.4.1.353.5.6.1.1.2.1.3	Counter32	read-only	The number of aborted frames received on this FUNI logical interface. A frame is considered aborted after receiving 7 or more continuous ones.
C32 funiIfRxTooShortFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.4	Counter32	read-only	The number of frames received on this FUNI logical interface that were too short, and were thus discarded. The minimum frame size is 5 octets.
C32 funiIfRxTooLongFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.5	Counter32	read-only	The number of frames received on this FUNI logical interface that were too large, and were thus discarded.
C32 funiIfRxFcsErrFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.6	Counter32	read-only	The number of frames received on this FUNI logical interface that contained FCS errors, and were thus discarded.
C32 funiIfRxUnknownFaFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.7	Counter32	read-write	The number of frames received on this FUNI logical interface with an unrecognized frame address (e.g., frames that were received on an unknown FUNI logical interface virtual channel link, such as an unestablished SVC or an unprovisioned PVC.
C32 funiIfRxDiscardedFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.8	Counter32	read-only	The number of frames received on this FUNI logical interface that were discarded due to any reason other than those described in other objects in this table (e.g., frames that were discarded because insufficient buffer space was available for storing the frame).
C32 funiIfTxTooLongFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.9	Counter32	read-only	The number of frames that were too large to be transmitted on this FUNI logical interface, and were thus discarded.
C32 funiIfTxLenErrFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.10	Counter32	read-only	The number of reassembled frames intended to be transmitted on this FUNI logical interface for which the AAL5 PDU trailer length fields did not match the actual PDU length, and were thus discarded.
C32 funiIfTxCrcErrFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.11	Counter32	read-only	The number of reassembled frames intended to be transmitted on this FUNI logical interface for which the AAL5 PDU, AAL3/4, or OAM cell had CRC errors, and were thus discarded.
C32 funiIfTxPartialFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.12	Counter32	read-only	The number of frames which could not be completely reassembled for reasons other than a reassembly timeout (e.g., missing AAL3/4 BOM cells, etc.), and were thus discarded before being transmitted on this FUNI logical interface.
C32 funiIfTxTimeOutFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.13	Counter32	read-only	The number of frames which could not be completely reassembled due to a reassembly timeout, and were thus discarded before being transmitted on this FUNI logical interface.
C32 funiIfTxDiscardedFrames	1.3.6.1.4.1.353.5.6.1.1.2.1.14	Counter32	read-only	The number of frames intended to be transmitted on this FUNI logical interface that were discarded due to any reason other than those described in other objects in this table (e.g., frames that were discarded because insufficient buffer space was available for reassembling the frame).
funiVclStatsTable	1.3.6.1.4.1.353.5.6.1.1.3		not-accessible	A table of FUNI statistical information for individual FUNI virtual channel links on FUNI logical interfaces.
funiVclStatsEntry	1.3.6.1.4.1.353.5.6.1.1.3.1		not-accessible	An entry in the FUNI virtual channel link statistics table.
FUN funiVclFaVpi	1.3.6.1.4.1.353.5.6.1.1.3.1.1	FuniValidVpi	not-accessible	The VPI field of this FUNI virtual channel link, as identified within the frame address of the FUNI frame header.
FUN funiVclFaVci	1.3.6.1.4.1.353.5.6.1.1.3.1.2	FuniValidVci	not-accessible	The VCI field of this FUNI virtual channel link, as identified within the frame address of the FUNI frame header.
C32 funiVclRxClp0Frames	1.3.6.1.4.1.353.5.6.1.1.3.1.3	Counter32	read-only	The number of FUNI frames with CLP=0 that were received over this FUNI virtual channel link.
C32 funiVclRxTotalFrames	1.3.6.1.4.1.353.5.6.1.1.3.1.4	Counter32	read-only	The total number of FUNI frames that were received over this FUNI virtual channel link.
C32 funiVclTxClp0Frames	1.3.6.1.4.1.353.5.6.1.1.3.1.5	Counter32	read-only	The number of FUNI frames with CLP=0 that were transmitted over this FUNI virtual channel link.
C32 funiVclTxTotalFrames	1.3.6.1.4.1.353.5.6.1.1.3.1.6	Counter32	read-only	The total number of FUNI frames that were transmitted over this FUNI virtual channel link.
C32 funiVclRxClp0Octets	1.3.6.1.4.1.353.5.6.1.1.3.1.7	Counter32	read-only	The number of octets within FUNI frames with CLP=0 that were received over this FUNI virtual channel link (excluding the opening flag, header octets, FCS octets, and closing flag). This is intended to count only those octets within the user payload of each FUNI frame received with CLP=0.
C32 funiVclRxTotalOctets	1.3.6.1.4.1.353.5.6.1.1.3.1.8	Counter32	read-only	The total number of octets within all FUNI frames that were received over this FUNI virtual channel link (excluding the opening flag, header octets, FCS octets, and closing flag). This is intended to count only those octets within the user payload of each received FUNI frame.
C32 funiVclTxClp0Octets	1.3.6.1.4.1.353.5.6.1.1.3.1.9	Counter32	read-only	The number of octets within FUNI frames with CLP=0 that were transmitted over this FUNI virtual channel link (excluding the opening flag, header octets, FCS octets, and closing flag). This is intended to count only those octets within the user payload of each of each FUNI frame transmitted with CLP=0.
C32 funiVclTxTotalOctets	1.3.6.1.4.1.353.5.6.1.1.3.1.10	Counter32	read-only	The total number of octets within all FUNI frames that were transmitted over this FUNI virtual channel link (excluding the opening flag, header octets, FCS octets, and closing flag). This is intended to count only those octets within the user payload of each transmitted FUNI frame.
C32 funiVclRxErrors	1.3.6.1.4.1.353.5.6.1.1.3.1.11	Counter32	read-only	The number of errored FUNI frames that were discarded after being received over this FUNI virtual channel link. More detail on errors detected on individual FUNI virtual channel links is not available on a per-VCL basis, but is available on a per-interface basis via the various counters in the FUNI logical interface statistics table.
C32 funiVclTxErrors	1.3.6.1.4.1.353.5.6.1.1.3.1.12	Counter32	read-only	The number of FUNI frame reassembly processes that were aborted due an error before transmitting any FUNI frame over this FUNI virtual channel link. More detail on errors detected on individual FUNI virtual channel links is not available on a per-VCL basis, but is available on a per-interface basis via the various counters in the FUNI logical interface statistics table.
C32 funiVclRxOamFrames	1.3.6.1.4.1.353.5.6.1.1.3.1.13	Counter32	read-only	The number of FUNI OAM frames (i.e., with FID1=1 and FID2=0) that were received over this FUNI virtual channel link.
C32 funiVclTxOamFrames	1.3.6.1.4.1.353.5.6.1.1.3.1.14	Counter32	read-only	The number of FUNI OAM frames (i.e., with FID1=1 and FID2=0) that were transmitted over this FUNI virtual channel link.
funiMIBConformance	1.3.6.1.4.1.353.5.6.1.2
funiMIBCompliances	1.3.6.1.4.1.353.5.6.1.2.1
funiMIBCompliance	1.3.6.1.4.1.353.5.6.1.2.1.1			The compliance statement for entities which implement the FUNI MIB. Groups of FUNI objects required for management of a FUNI logical interface on a FUNI network or user device are identified by the suffix MinGroup. Groups of optional FUNI objects are identified by the suffix OptionalGroup.
funiMIBGroups	1.3.6.1.4.1.353.5.6.1.2.2
funiIfConfMinGroup	1.3.6.1.4.1.353.5.6.1.2.2.1			A collection of per-FUNI logical interface configuration objects required for management of a minimum function FUNI logical interface.
funiIfStatsMinGroup	1.3.6.1.4.1.353.5.6.1.2.2.2			A collection of per-FUNI logical interface statistics objects required for management of a minimum function FUNI logical interface.
funiVclStatsOptionalGroup	1.3.6.1.4.1.353.5.6.1.2.2.3			A collection of optional per-VCL statistics objects used to manage individual FUNI virtual channel links.

RFC description

MIB for Frame User Network Interface (FUNI) protocol management and configuration.

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Download FUNI-MIB