RFC1230-MIB

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Category: IETF Standards

Description: Provides management objects for IEEE 802.4 Token Bus network interfaces as specified in RFC 1230.

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What Is RFC1230-MIB?

RFC1230-MIB is a vendor-neutral, IETF standards-based module defining management objects for IEEE 802.4 Token Bus network interfaces, an older token-passing LAN media-access technology once common in industrial/manufacturing networks. It exposes interface-level configuration and MAC-layer statistics for Token Bus adapters, following the pattern of other IEEE 802.x interface MIBs of the era. For hardware status monitoring it would let an operator check a Token Bus interface's operational state and accumulating MAC-layer error counts, which typically indicate a failing adapter or wiring fault, though no object list was captured for this MIB to confirm specifics. It builds on the base interfaces group defined in RFC1213-MIB/MIB-II for its interface indexing conventions. It would have been deployed on legacy industrial or manufacturing-floor networks using Token Bus (IEEE 802.4) technology, a media type that is now essentially obsolete. Engineers can download the RFC1230-MIB file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in RFC1230-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 legacy IEEE 802.4 Token Bus network adapters

Monitoring Examples

No sample objects were provided for this MIB, so specific table/object names cannot be grounded here; in principle it would expose Token Bus interface status and MAC-layer error counters per IEEE 802.4 conventions, but no concrete polling scenario can be described from the data given.

Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter

From RFC1213-MIB

transmission

OIDs

OID symbolic	OID numeric	Type	Access	Description
dot4	1.3.6.1.2.1.10.8
dot4Table	1.3.6.1.2.1.10.8.1		not-accessible	This table contains Token Bus interface parameters and state variables, one entry per 802.5 interface.
dot4Entry	1.3.6.1.2.1.10.8.1.1		not-accessible	A list of Token Bus status and operational parameter values for an 802.4 interface.
INT dot4IfIndex	1.3.6.1.2.1.10.8.1.1.1	INTEGER	read-only	The value of this object identifies the 802.4 interface for which this entry contains management information. The value of this object for a particular interface has the same value as the ifIndex object, defined in [4,6], for the same interface.
INT dot4Options	1.3.6.1.2.1.10.8.1.1.2	INTEGER	read-only	The optional parts of the 802.4 specification which are in use by this station. The options of the 802.4 specification are represented by the following values: 1 - Priority 2 - Request-With-Response The value of this object is given by the sum of the above representations for those options in use on this interface. The value zero indicates that no options are in use.
INT dot4State	1.3.6.1.2.1.10.8.1.1.3	INTEGER	read-only	The current state of the 802.4 interface. The value of other(1) is used if the state is unknown (e.g., due to an error condition).
INT dot4Commands	1.3.6.1.2.1.10.8.1.1.4	INTEGER	read-write	Setting this object causes the station to change the state of the interface as indicated by the specified value. An initialize(5) command causes the interfaceto load its operational parameters from its initialization parameters; the value of dot4InitInRingDesired determines whether the station tries to enter the logical ring immediately. Note that the 802.4 specification suggests a station remain Offline after a 'remote Network Management' reset(4), until a 'local Network Management' initialize(5) is performed. Setting this object to a value of no-op(1) has no effect. When read, this object always has the value no-op(1).
INT dot4MacAddrLen	1.3.6.1.2.1.10.8.1.1.5	INTEGER	read-only	This object indicates the size of MAC addresses interpreted by this station.
MAC dot4NextStation	1.3.6.1.2.1.10.8.1.1.6	MacAddress	read-only	The MAC address of this station's successor in the logical ring.
MAC dot4PreviousStation	1.3.6.1.2.1.10.8.1.1.7	MacAddress	read-only	The source MAC address of the last token addressed to this station.
OCT dot4SlotTime	1.3.6.1.2.1.10.8.1.1.8	OctetTime	read-only	The maximum time any station need wait for an immediate MAC-level response from another station. This value must the same in all stations on the 802.4 network.
OCT dot4LastTokenRotTime	1.3.6.1.2.1.10.8.1.1.9	OctetTime	read-only	The observed token rotation time for the last token rotation, timed from token arrival to token arrival. A value of zero indicates that the token is not rotating.
OCT dot4HiPriTokenHoldTime	1.3.6.1.2.1.10.8.1.1.10	OctetTime	read-only	The maximum duration for which a station can hold the token to transmit frames of access class 6 (if the priority option is implemented), or of any access class (if the priority option is not implemented).
OCT dot4TargetRotTimeClass4	1.3.6.1.2.1.10.8.1.1.11	OctetTime	read-only	If the priority scheme is being used, this value specifies a limit on how long a station can transmit frames at access class 4. The limit is measured from the time the station is able to start transmitting frames at this access class on one rotation, to the time it must stop transmitting frames at this access class on the next rotation. If the priority scheme is not being used, this object has the value 0.
OCT dot4TargetRotTimeClass2	1.3.6.1.2.1.10.8.1.1.12	OctetTime	read-only	If the priority scheme is being used, this value specifies a limit on how long a station can transmit frames at access class 2. The limit is measured from the time the station is able to start transmitting frames at this access class on one rotation, to the time it must stop transmitting frames at this access class on the next rotation. If the priority scheme is not being used, this object has the value 0.
OCT dot4TargetRotTimeClass0	1.3.6.1.2.1.10.8.1.1.13	OctetTime	read-only	If the priority scheme is being used, this value specifies a limit on how long a station can transmit frames at access class 0. The limit is measured from the time the station is able to start transmitting frames at this access class on one rotation, to the time it must stop transmitting frames at this access class on the next rotation. If the priority scheme is not being used, this object has the value 0.
OCT dot4TargetRotTimeRingMaint	1.3.6.1.2.1.10.8.1.1.14	OctetTime	read-only	A value used to limit the duration of a token rotation. If the duration of a token rotation exceeds this value, the station will not open the response window to solicit for a new successor.
OCT dot4RingMaintTimerInitValue	1.3.6.1.2.1.10.8.1.1.15	OctetTime	read-only	The value to which the dot4TargetRotTimeRingMaint is set, each time the station enters the ring. A large value will cause the station to solicit successors immediately upon entry to the ring; a value of zero will cause the station to defer this solicitation for at least one token rotation.
INT dot4MaxInterSolicitCount	1.3.6.1.2.1.10.8.1.1.16	INTEGER	read-only	The maximum number of consecutive token rotations without soliciting for a successor. If this count expires, the station opens the response window to solicit for a successor (providing the duration of the current token rotation has not exceeded dot4TargetRotTimeRingMaint). The least significant two bits of the count are determined randomly by the station on a per-use basis.
INT dot4MaxRetries	1.3.6.1.2.1.10.8.1.1.17	INTEGER	read-only	The maximum number of retries of a Request-with-Response (RWR) frame. If the RWR option is not in use, this object has the value 0.
INT dot4MinPostSilencePreambLen	1.3.6.1.2.1.10.8.1.1.18	INTEGER	read-only	The minimum number of octets of preamble on the first frame transmitted by this station after a period of 'transmitted' silence.
INT dot4StandardRevision	1.3.6.1.2.1.10.8.1.1.19	INTEGER	read-only	The Revision number of the 802.4 standard implemented by this station.
dot4InitTable	1.3.6.1.2.1.10.8.2		not-accessible	This table contains Token Bus initialization parameters, one entry per 802.4 interface.
dot4InitEntry	1.3.6.1.2.1.10.8.2.1		not-accessible	A list of Token Bus initialization parameters for an 802.4 interface.
INT dot4InitIfIndex	1.3.6.1.2.1.10.8.2.1.1	INTEGER	read-only	The value of this object identifies the 802.4 interface for which this entry contains management information. The value of this object for a particular interface has the same value as the ifIndex object, defined in [4,6], for the same interface.
OCT dot4InitSlotTime	1.3.6.1.2.1.10.8.2.1.2	OctetTime	read-write	The value assigned to the object dot4SlotTime when the station is initialized.
INT dot4InitMaxInterSolicitCount	1.3.6.1.2.1.10.8.2.1.3	INTEGER	read-write	The value assigned to the object dot4MaxInterSolicitCount when the station is initialized.
INT dot4InitMaxRetries	1.3.6.1.2.1.10.8.2.1.4	INTEGER	read-write	The value assigned to the object dot4MaxRetries when the station is initialized.
OCT dot4InitHiPriTokenHoldTime	1.3.6.1.2.1.10.8.2.1.5	OctetTime	read-write	The value assigned to the object dot4HiPriTokenHoldTime when the station is initialized.
OCT dot4InitTargetRotTimeClass4	1.3.6.1.2.1.10.8.2.1.6	OctetTime	read-write	The value assigned to the object dot4TargetRotTimeClass4 when the station is initialized.
OCT dot4InitTargetRotTimeClass2	1.3.6.1.2.1.10.8.2.1.7	OctetTime	read-write	The value assigned to the object dot4TargetRotTimeClass2 when the station is initialized.
OCT dot4InitTargetRotTimeClass0	1.3.6.1.2.1.10.8.2.1.8	OctetTime	read-write	The value assigned to the object dot4TargetRotTimeClass0 when the station is initialized.
OCT dot4InitTargetRotTimeRingMaint	1.3.6.1.2.1.10.8.2.1.9	OctetTime	read-write	The value assigned to the object dot4TargetRotTimeRingMaint when the station is initialized.
OCT dot4InitRingMaintTimerInitValue	1.3.6.1.2.1.10.8.2.1.10	OctetTime	read-write	The value assigned to the object dot4RingMaintTimerInitValue when the station is initialized.
INT dot4InitMinPostSilencePreambLen	1.3.6.1.2.1.10.8.2.1.11	INTEGER	read-write	The value assigned to the object dot4MinPostSilencePreambLen when the station is initialized.
INT dot4InitInRingDesired	1.3.6.1.2.1.10.8.2.1.12	INTEGER	read-write	This object determines whether the station will attempt to enter the logical ring immediately after initialization.
dot4StatsTable	1.3.6.1.2.1.10.8.3		not-accessible	A table containing Token Bus statistics. All the statistics are defined using the syntax Counter as 32 bit wrap around counters. Thus, if an interface's hardware chip set maintains these statistics in 16-bit counters, then the agent must read the hardware's counters frequently enough to prevent loss of significance, in order to maintain a 32-bit counter in software.
dot4StatsEntry	1.3.6.1.2.1.10.8.3.1		not-accessible	An entry containing the 802.4 statistics for a particular interface.
INT dot4StatsIfIndex	1.3.6.1.2.1.10.8.3.1.1	INTEGER	read-only	The value of this object identifies the 802.4 interface for which this entry contains management information. The value of this object for a particular interface has the same value as the ifIndex object, defined in [4,6], for the same interface.
CTR dot4StatsTokenPasses	1.3.6.1.2.1.10.8.3.1.2	Counter	read-only	The number of times this station has passed the token.
CTR dot4StatsTokenHeards	1.3.6.1.2.1.10.8.3.1.3	Counter	read-only	The number of tokens heard by this station.
CTR dot4StatsNoSuccessors	1.3.6.1.2.1.10.8.3.1.4	Counter	read-only	The number of times the station could not find a successor while believing itself not the only station in the ring. This can signify a faulty transmitter condition in this station.
CTR dot4StatsWhoFollows	1.3.6.1.2.1.10.8.3.1.5	Counter	read-only	The number of times the station has had to look for a new next station.
CTR dot4StatsTokenPassFails	1.3.6.1.2.1.10.8.3.1.6	Counter	read-only	The number of times the station failed in passing the token to the next station.
CTR dot4StatsNonSilences	1.3.6.1.2.1.10.8.3.1.7	Counter	read-only	The number of occurrences of non-silence followed by silence in which a start delimiter was not detected.
CTR dot4StatsFcsErrors	1.3.6.1.2.1.10.8.3.1.8	Counter	read-only	The number of frames received with an incorrect FCS and the E-bit reset.
CTR dot4StatsEbitErrors	1.3.6.1.2.1.10.8.3.1.9	Counter	read-only	The number of frames the station received with the E-bit set in the end delimiter.
CTR dot4StatsFrameFrags	1.3.6.1.2.1.10.8.3.1.10	Counter	read-only	The number of occurrences of receiving a start delimiter followed by another start delimiter, an invalid symbol sequence or silence, without an intervening end delimiter.
CTR dot4StatsFrameTooLongs	1.3.6.1.2.1.10.8.3.1.11	Counter	read-only	The number of frames that were received that were larger than the media's MTU.
CTR dot4StatsOverRuns	1.3.6.1.2.1.10.8.3.1.12	Counter	read-only	The number of times a FIFO overrun was detected in the station.
CTR dot4StatsDupAddresses	1.3.6.1.2.1.10.8.3.1.13	Counter	read-only	The number of times this station detected another station using the same MAC address.
dot4Errors	1.3.6.1.2.1.10.8.4
dot4ModemInitFailed	1.3.6.1.2.1.10.8.4.1
dot4Tests	1.3.6.1.2.1.10.8.5
testFifoPath	1.3.6.1.2.1.10.8.5.1
testExternalLoopback	1.3.6.1.2.1.10.8.5.2
dot4ChipSets	1.3.6.1.2.1.10.8.6
chipSetMc68824	1.3.6.1.2.1.10.8.6.1

RFC description

Defines management objects for IEEE 802.4 Token Bus network interfaces per RFC 1230.

Start monitoring vendor-neutral, standards-based MIB, legacy IEEE 802.4 Token Bus network adapters (obsolete) 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 RFC1230-MIB

What Is RFC1230-MIB?

Supported Devices

Monitoring Examples

This MIB depends on

Related MIBs

RFC description