LAN-EMULATION-BUS-MIB

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Category: ATM, Protocol: ATM

Description: ATM Forum MIB for managing LAN Emulation Broadcast and Unknown Server (BUS) functions in ATM LAN emulation networks.

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What Is LAN-EMULATION-BUS-MIB?

LAN-EMULATION-BUS-MIB is an ATM Forum-derived, vendor-neutral MIB module for managing the Broadcast and Unknown Server (BUS) function within ATM LAN Emulation (LANE) networks, a technology that lets legacy Ethernet/Token Ring traffic run over ATM. It exposes configuration data for BUS instances, including index assignment used when a network manager creates a new entry in the BUS configuration table. Its monitoring value is centered on configuration/status tracking of the BUS service rather than deep hardware telemetry — administrators use it to verify that BUS instances are correctly provisioned and to confirm the broadcast/unknown-frame relay function is active and correctly indexed on the LANE server. It builds on the broader ATM Forum LAN Emulation architecture and assumes companion LANE client/server MIBs are present for full session visibility. It is typically deployed on ATM switches or LAN Emulation servers in legacy ATM-to-Ethernet bridging environments, making the LAN-EMULATION-BUS-MIB module one of the smaller, more specialized pieces of the broader ATM Forum LANE MIB suite.

IPNetwork Monitor allows you to monitor SNMP objects defined in LAN-EMULATION-BUS-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, ATM Forum standards-based MIB
ATM switches / LAN Emulation servers running LANE BUS function

Monitoring Examples

The module's central object is the busConfTable, whose next available index (the BUS index object) a network manager uses to allocate a new busConfTable entry when provisioning a BUS instance; polling this table lets an admin confirm how many BUS instances are configured and detect unexpected changes in BUS provisioning on a LANE server.

What Can Be Monitored

BUS configuration table entries
next available BUS index
BUS instance provisioning status

Imported Objects

From LAN-EMULATION-CLIENT-MIB

VciInteger
VpiInteger
atmfLanEmulation	OBJECT-IDENTITY

From LAN-EMULATION-ELAN-MIB

AtmLaneMask
IfIndexOrZero
Integer
TIMESTAMP

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

From RFC1213-MIB

DisplayString

OIDs

OID symbolic	OID numeric	Type	Access	Description
INT busConfAdminStatus	1.3.6.1.4.1.353.5.3.4.1.2.1.9	INTEGER	read-write	The desired state of the designated BUS as prescribed by the operator. The actions of the agent will, if at all possible, eventually result in the desired state being reflected in the busOperStatus.
ADR busConfAtmAddrActual	1.3.6.1.4.1.353.5.3.4.1.2.1.4	AtmLaneAddress	read-only	The resultant ATM address in use by the BUS. This object is a product of the specified ATM address, mask and interaction with the network. This object is created by the agent.
ATM busConfAtmAddrMask	1.3.6.1.4.1.353.5.3.4.1.2.1.3	AtmLaneMask	read-write	The ATM address mask associated with the object busAtmAddrSpec. The value of the mask is an ATM address with the don't care portion set to zero and the valid ATM address portion set to one.
ADR busConfAtmAddrSpec	1.3.6.1.4.1.353.5.3.4.1.2.1.2	AtmLaneAddress	read-write	An ATM address specified by the network or local management that, with the ATM address mask, determines a portion of the ATM address that the BUS on the designated ATM interface will use to derive the actual ATM address from the network or ILMI. The derived ATM address is specified in the object busAtmAddrActual, which is used to receive multicast or broadcast traffic.
STR busConfElanName	1.3.6.1.4.1.353.5.3.4.1.2.1.5	DisplayString	read-write	The name of the ELAN this BUS is providing service to.
busConfEntry	1.3.6.1.4.1.353.5.3.4.1.2.1		not-accessible	Each entry in this table represents a BUS. The parameters in each entry apply to one emulated LAN served by one BUS. Object busRowStatus is required during row creation and deletion. Object busElanName is used to indicate the ELAN this BUS is servicing and is used to cross reference tables defined in the LAN Emulation Server MIB. Note that objects busAtmAddrSpec and busAtmAddrMask are used to configure the ATM address of a BUS. The BUS typically derives it's ATM address from the switch or the network and the actual ATM address used is indicated in the object busAtmAddrActual.
busConfGroup	1.3.6.1.4.1.353.5.3.4.1
INT busConfIndex	1.3.6.1.4.1.353.5.3.4.1.2.1.1	INTEGER	not-accessible	A value which uniquely identifies a conceptual row in the busConfTable. If the conceptual row identified by this value of busConfIndex is recreated following an agent restart, the same value of busConfIndex must be used to identify the recreated row.
TIM busConfLastChange	1.3.6.1.4.1.353.5.3.4.1.2.1.6	TIMESTAMP	read-only	The value of the sysUpTime when this BUS has entered the state indicated by the object busConfOperStatus.
INT busConfMaxFrameAge	1.3.6.1.4.1.353.5.3.4.1.2.1.7	INTEGER	read-write	Time out period for a frame that has been received but not been transmitted by BUS to all relevant Multicast Send VCCs or Multicast Forward VCCs.
INT busConfNextId	1.3.6.1.4.1.353.5.3.4.1.1	INTEGER	read-only	The next available BUS index. The value of this object can be used as the index by the network manager to create an entry in the busConfTable.
INT busConfOperStatus	1.3.6.1.4.1.353.5.3.4.1.2.1.8	INTEGER	read-only	The operational state of this BUS entry. When in 'up' state the BUS will forward LEC traffic. Any other state the BUS is not available for service and may release all the existing VCCs and refuse service to all clients.
ROW busConfRowStatus	1.3.6.1.4.1.353.5.3.4.1.2.1.10	RowStatus	read-write	This object is used to create or delete entries in the busConfTable.
busConfTable	1.3.6.1.4.1.353.5.3.4.1.2		not-accessible	This table contains all LAN Emulation Broadcast and Unknown Servers (BUS) this agent manages. The BUS handles data sent by an LE Client to the broadcast MAC address, all multicast traffic, and initial unicast frames which are sent by a LEC before the data direct target ATM address has been resolved. There can be multiple BUSs per ELAN, but a BUS can service only one ELAN.
INT busErrCtlAdminStatus	1.3.6.1.4.1.353.5.3.4.3.1.1.1	INTEGER	read-write	This object is used to enable/disable error logging for the BUS.
INT busErrCtlClearLog	1.3.6.1.4.1.353.5.3.4.3.1.1.3	INTEGER	read-write	This object is used to clear the error log entries associated with this BUS.
busErrCtlEntry	1.3.6.1.4.1.353.5.3.4.3.1.1		not-accessible	Each entry represents a BUS entry in the busConfTable.
INT busErrCtlLastEntry	1.3.6.1.4.1.353.5.3.4.3.1.1.5	INTEGER	read-write	The index to the last entry in the error log table for this BUS.
INT busErrCtlMaxEntries	1.3.6.1.4.1.353.5.3.4.3.1.1.4	INTEGER	read-only	The maximum entries of the error log a BUS can support.
INT busErrCtlOperStatus	1.3.6.1.4.1.353.5.3.4.3.1.1.2	INTEGER	read-only	This object is used to indicate the result of a set operation to the object busErrCtlAdminStatus. If the error log was successfully started, it is in active(2) mode. Otherwise, it is set to either outOfRes(3) or failed(4) for the respective reasons.
busErrCtlTable	1.3.6.1.4.1.353.5.3.4.3.1		not-accessible	This table contains error log control information of all BUS instances. This table is an extention to the busConfTable. It is used to enable or disable error logs for a particular BUS entry.
ADR busErrLogAtmAddr	1.3.6.1.4.1.353.5.3.4.3.2.1.2	AtmLaneAddress	read-only	The primary ATM address of the LE Client on whose Multicast Send VCC the error occured. The corresponding error code is specified in the object busErrLogErrCode.
busErrLogEntry	1.3.6.1.4.1.353.5.3.4.3.2.1		not-accessible	Each entry represents aan error detected by the BUS.
INT busErrLogErrCode	1.3.6.1.4.1.353.5.3.4.3.2.1.3	INTEGER	read-only	The Error code which indicates the cause of the error.
INT busErrLogIndex	1.3.6.1.4.1.353.5.3.4.3.2.1.1	INTEGER	not-accessible	An arbitrary integer which uniquely identifies an error log entry. The first entry after reset or clearing the error log is an assigned value (2^32-1). Succeding entries are assigned with descending values consecutively. Entries after 1 are discarded.The enabling/disabling of the error log capability is done in the busErrCtlTable.
busErrLogTable	1.3.6.1.4.1.353.5.3.4.3.2		not-accessible	This table contains error logs of the BUS instances enabled in the busErrCtlTable. This table is indexed by the BUS instance index and an arbitrary integer uniquely identifies an error log.
TIM busErrLogTime	1.3.6.1.4.1.353.5.3.4.3.2.1.4	TIMESTAMP	read-only	The sysUpTime when this entry was logged by the BUS.
busFaultGroup	1.3.6.1.4.1.353.5.3.4.3
ADR busLecAtmAddr	1.3.6.1.4.1.353.5.3.4.1.5.1.1	AtmLaneAddress	not-accessible	The ATM address of the LEC. This is the primary ATM address of the LEC.
CTR busLecDiscards	1.3.6.1.4.1.353.5.3.4.2.2.1.3	Counter	read-only	Number of Multicast, Broadcast and Unkown Forward requests discarded by the BUS from this LEC. The value of this object indicate how many requests have been discarded by the BUS.
busLecEntry	1.3.6.1.4.1.353.5.3.4.1.5.1		not-accessible	Each entry represents a BUS to LEC mapping.
CTR busLecForwards	1.3.6.1.4.1.353.5.3.4.2.2.1.2	Counter	read-only	Number of Multicast, Broadcast and Unkown Forward requests forwarded by the BUS from this LEC. The value of this object indicate how many requests have been forwarded by the BUS.
IFI busLecMcastSendAtmIfIndex	1.3.6.1.4.1.353.5.3.4.1.5.1.2	IfIndexOrZero	read-write	The ATM interface index this BUS uses for Multicast Send traffic. The value of this object has to exist in the ifTable in MIB II unless an internal connection is used. When an internal connection is used, this object is set to zero.
NUM busLecMcastSendVci	1.3.6.1.4.1.353.5.3.4.1.5.1.5	VciInteger	read-write	The virtual channel identifier used to receive multicast traffic by this BUS.
NUM busLecMcastSendVpi	1.3.6.1.4.1.353.5.3.4.1.5.1.4	VpiInteger	read-write	The virtual path identifier used to receive multicast traffic by this BUS.
CTR busLecRecvs	1.3.6.1.4.1.353.5.3.4.2.2.1.1	Counter	read-only	Number of Multicast, Broadcast and Unknown Forward requests received by the BUS from this LEC.
ROW busLecRowStatus	1.3.6.1.4.1.353.5.3.4.1.5.1.6	RowStatus	read-write	This object provides a way for the network manager to selectively remove a LE Client from the designated BUS. Or in a system where PVCs are used, this table is used to create Multicast Send VCCs between BUS and LEC.
busLecStatEntry	1.3.6.1.4.1.353.5.3.4.2.2.1		not-accessible	Each entry in this table represents a LEC and its counters.
busLecStatTable	1.3.6.1.4.1.353.5.3.4.2.2		not-accessible	This table contains all LEC counters the BUS maintains. This table can also be used to retrieve all LECs a BUS is providing service to.
busLecTable	1.3.6.1.4.1.353.5.3.4.1.5		not-accessible	This table contains the BUS and the actual LECs being serviced by the BUS. It can be used as the actual mapping between BUS and LEC. This table provides information for Multicast send VCCs between BUS and clients. Objects busLecMcastSendAtmIfIndex, busLecMcastSendVpi, and busLecMcstSendVci can only be modified if PVC is used.
TIM busLecTableLastChange	1.3.6.1.4.1.353.5.3.4.1.4	TIMESTAMP	read-only	The value of sysUpTime when an entry of the busLecTable was created/deleted.
busMIB	1.3.6.1.4.1.353.5.3.4
busStatEntry	1.3.6.1.4.1.353.5.3.4.2.1.1		not-accessible	Each entry in this table contains a BUS and its counters.
CTR busStatFrmTimeOuts	1.3.6.1.4.1.353.5.3.4.2.1.1.5	Counter	read-only	The number of frames dropped by the BUS due to time out.
busStatGroup	1.3.6.1.4.1.353.5.3.4.2
CTR busStatInDiscards	1.3.6.1.4.1.353.5.3.4.2.1.1.1	Counter	read-only	The number of frames discarded due to resource error.
CTR busStatInMcastFrms	1.3.6.1.4.1.353.5.3.4.2.1.1.4	Counter	read-only	The number of frames that the BUS has received which were multicast frames.
CTR busStatInOctets	1.3.6.1.4.1.353.5.3.4.2.1.1.2	Counter	read-only	The number of octets that this BUS has received since its initialization.
CTR busStatInUcastFrms	1.3.6.1.4.1.353.5.3.4.2.1.1.3	Counter	read-only	The number of frames that the BUS has received which were unicast data frames and all control frames (i.e. they were flooded from the client).
CTR busStatMcastFwdFailure	1.3.6.1.4.1.353.5.3.4.2.1.1.7	Counter	read-only	The number of multicast forward VCCconnection setup attempts from the BUS which were unsuccessful for any reason.
CTR busStatMcastSendRefused	1.3.6.1.4.1.353.5.3.4.2.1.1.6	Counter	read-only	The number of multicast send VCCconnection setup attempts to the BUS which were refused.
busStatTable	1.3.6.1.4.1.353.5.3.4.2.1		not-accessible	This table contains all counters the BUS maintain. This table is an extention to the busConfTable.
IFI busVccAtmIfIndex	1.3.6.1.4.1.353.5.3.4.1.3.1.1	IfIndexOrZero	not-accessible	The ATM interface which the Multicast Forward VCC is running on. This value must match an existing value in the ifTable. The value of this object is set to zero when the ATM interface is undefined.
busVccEntry	1.3.6.1.4.1.353.5.3.4.1.3.1		not-accessible	Each entry in this table represents a Multicast Forward VCC of the BUS.
NUM busVccMtFwdVci	1.3.6.1.4.1.353.5.3.4.1.3.1.3	VciInteger	not-accessible	The VCI value of the Multicast Forward VCC. The object busVccAtmIfIndex, busVccMtFwdVpi and the value of this object uniquely identfies a VCC within a ATM host.
NUM busVccMtFwdVpi	1.3.6.1.4.1.353.5.3.4.1.3.1.2	VpiInteger	not-accessible	The VPI value of the Multicast Forward VCC. The object busVccAtmIfIndex, busVccMtFwdVci and the value of this object uniquely identfies a VCC within a ATM host.
ROW busVccRowStatus	1.3.6.1.4.1.353.5.3.4.1.3.1.4	RowStatus	read-write	This object is used to create or delete entries in the busConfTable.
busVccTable	1.3.6.1.4.1.353.5.3.4.1.3		not-accessible	This table contains all the Multicast Forward VCCs used by the BUS to forward multicast traffic to the participating LECs. The Multicast Forward VCC can either be point-to-point or point-to- multipoint calls. This table is read only if SVCs are used and writable if PVCs are used.

FAQ

What does LAN-EMULATION-BUS-MIB let you verify about the Broadcast and Unknown Server function on an ATM LAN Emulation network?
It exposes configuration data for BUS instances, letting administrators confirm that BUS entries are correctly provisioned and indexed, and that the broadcast/unknown-frame relay function is active on the LANE server.

How is the 'next available BUS index' object used when a network manager sets up a new BUS instance?
Its value can be used directly as the index when the network manager creates a new entry in the busConfTable, ensuring the new BUS instance is assigned a unique, valid index.

RFC description

Manages LAN Emulation Broadcast and Unknown Server (BUS) objects for ATM virtual LANs, including forwarding and multicast packet handling as defined in the ATM Forum LAN Emulation specification.

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Download LAN-EMULATION-BUS-MIB

What Is LAN-EMULATION-BUS-MIB?

Supported Devices

Monitoring Examples

What Can Be Monitored

This MIB depends on

Related MIBs

FAQ

RFC description