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RFC1381-MIB DEFINITIONS ::= BEGIN
IMPORTS Counter FROM RFC1155-SMI transmission FROM RFC1213-MIB OBJECT-TYPE FROM RFC-1212;
-- LAPB MIB
lapb OBJECT IDENTIFIER ::= { transmission 16 }
PositiveInteger ::= INTEGER (0..2147483647)
IfIndexType ::= INTEGER (1..2147483647) -- IfIndexType specifies an index object for a table -- with entries that match entries in the MIB-II ifTable. -- The value of the index for the table will match the -- ifIndex entry for same interface in the ifTable. -- The values of this object range from 1 to ifNumber -- inclusive.
-- ########################################################### -- LAPB Admn Table -- ###########################################################
-- Support of the lapbAdmnTable is mandatory for all -- agents of systems that implement LAPB.
lapbAdmnTable OBJECT-TYPE SYNTAX SEQUENCE OF LapbAdmnEntry ACCESS not-accessible STATUS mandatory
DESCRIPTION "This table contains objects that can be changed to manage a LAPB interface. Changing one of these parameters may take effect in the operating LAPB immediately or may wait until the interface is restarted depending on the details of the implementation.
Most of the objects in this read-write table have corresponding read-only objects in the lapbOperTable that return the current operating value.
The operating values may be different from these configured values if changed by XID negotiation or if a configured parameter was changed after the interface was started." ::= { lapb 1 }
lapbAdmnEntry OBJECT-TYPE SYNTAX LapbAdmnEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Configured parameter values for a specific LAPB." INDEX { lapbAdmnIndex } ::= { lapbAdmnTable 1 }
LapbAdmnEntry ::= SEQUENCE { lapbAdmnIndex IfIndexType, lapbAdmnStationType INTEGER, lapbAdmnControlField INTEGER, lapbAdmnTransmitN1FrameSize PositiveInteger, lapbAdmnReceiveN1FrameSize PositiveInteger, lapbAdmnTransmitKWindowSize INTEGER, lapbAdmnReceiveKWindowSize INTEGER, lapbAdmnN2RxmitCount INTEGER, lapbAdmnT1AckTimer
PositiveInteger, lapbAdmnT2AckDelayTimer PositiveInteger, lapbAdmnT3DisconnectTimer PositiveInteger, lapbAdmnT4IdleTimer PositiveInteger, lapbAdmnActionInitiate INTEGER, lapbAdmnActionRecvDM INTEGER }
lapbAdmnIndex OBJECT-TYPE SYNTAX IfIndexType ACCESS read-only STATUS mandatory DESCRIPTION "The ifIndex value for the LAPB interface." ::= { lapbAdmnEntry 1 }
lapbAdmnStationType OBJECT-TYPE SYNTAX INTEGER { dte (1), dce (2), dxe (3) } ACCESS read-write STATUS mandatory DESCRIPTION "Identifies the desired station type of this interface." REFERENCE "ISO 7776 section 3.1" DEFVAL { dte } ::= { lapbAdmnEntry 2 }
lapbAdmnControlField OBJECT-TYPE SYNTAX INTEGER { modulo8 (1), modulo128 (2) } ACCESS read-write STATUS mandatory DESCRIPTION "The desired size of the sequence numbers used to number frames." REFERENCE "ISO 8885 Table 3, Name: HDLC Option - 10" DEFVAL { modulo8 }
::= { lapbAdmnEntry 3 }
lapbAdmnTransmitN1FrameSize OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The default maximum N1 frame size desired in number of bits for a frame transmitted by this DTE. This excludes flags and 0 bits inserted for transparency." REFERENCE "ISO 8885 Table 3, Name: Information Field length" DEFVAL { 36000 } -- 4500 * 8; 802.5 Frame size ::= { lapbAdmnEntry 4 }
lapbAdmnReceiveN1FrameSize OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The default maximum N1 frame size desired in number of bits for a frame the DCE/remote DTE transmits to this DTE. This excludes flags and 0 bits inserted for transparency." DEFVAL { 36000 } -- 4500 * 8; 802.5 Frame size ::= { lapbAdmnEntry 5 }
lapbAdmnTransmitKWindowSize OBJECT-TYPE SYNTAX INTEGER (1..127) ACCESS read-write STATUS mandatory DESCRIPTION "The default transmit window size for this Interface. This is the maximum number of unacknowledged sequenced PDUs that may be outstanding from this DTE at any one time." REFERENCE "ISO 8885 Table 3, Name: Window size" DEFVAL { 7 } ::= { lapbAdmnEntry 6 }
lapbAdmnReceiveKWindowSize OBJECT-TYPE SYNTAX INTEGER (1..127) ACCESS read-write STATUS mandatory DESCRIPTION "The default receive window size for this Interface. This is the maximum number of
unacknowledged sequenced PDUs that may be outstanding from the DCE/remote DTE at any one time." REFERENCE "ISO 8885 Table 3, Name: Window size" DEFVAL { 7 } ::= { lapbAdmnEntry 7 }
lapbAdmnN2RxmitCount OBJECT-TYPE SYNTAX INTEGER (0..65535) ACCESS read-write STATUS mandatory DESCRIPTION "The default N2 retry counter for this interface. This specifies the number of times a PDU will be resent after the T1 timer expires without an acknowledgement for the PDU." REFERENCE "ISO 8885 Table 3, Name: Retransmission Attempts" DEFVAL { 20 } ::= { lapbAdmnEntry 8 }
lapbAdmnT1AckTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The default T1 timer for this interface. This specifies the maximum time in Milliseconds to wait for acknowledgment of a PDU." REFERENCE "ISO 8885 Table 3, Name: Acknowledgement timer" DEFVAL { 3000 } ::= { lapbAdmnEntry 9 }
lapbAdmnT2AckDelayTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The default T2 timer for this interface. This specifies the maximum time in Milliseconds to wait before sending an acknowledgment for a sequenced PDU. A value of zero means there will be no delay in acknowledgement generation." REFERENCE "ISO 8885 Table 3,
Name: Reply delay timer" DEFVAL { 0 } ::= { lapbAdmnEntry 10 }
lapbAdmnT3DisconnectTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The T3 timer for this interface. This specifies the time in Milliseconds to wait before considering the link disconnected. A value of zero indicates the link will be considered disconnected upon completion of the frame exchange to disconnect the link." REFERENCE "ISO 7776 section 5.7.1.3" DEFVAL { 60000 } ::= { lapbAdmnEntry 11 }
lapbAdmnT4IdleTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The T4 timer for this interface. This specifies the maximum time in Milliseconds to allow without frames being exchanged on the data link. A value of 2147483647 indicates no idle timer is being kept." REFERENCE "ISO 7776 section 5.7.1.4" DEFVAL { 2147483647 } ::= { lapbAdmnEntry 12 }
lapbAdmnActionInitiate OBJECT-TYPE SYNTAX INTEGER { sendSABM (1), sendDISC (2), sendDM (3), none (4), other (5) } ACCESS read-write STATUS mandatory DESCRIPTION "This identifies the action LAPB will take to initiate link set-up." DEFVAL { sendSABM } ::= { lapbAdmnEntry 13 }
lapbAdmnActionRecvDM OBJECT-TYPE SYNTAX INTEGER { sendSABM (1), sendDISC (2), other (3) } ACCESS read-write STATUS mandatory DESCRIPTION "This identifies the action LAPB will take when it receives a DM response." DEFVAL { sendSABM } ::= { lapbAdmnEntry 14 }
-- ########################################################### -- LAPB operating parameters. -- ###########################################################
-- Support of the lapbOperTable is mandatory for all -- agents of systems that implement LAPB.
lapbOperTable OBJECT-TYPE SYNTAX SEQUENCE OF LapbOperEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "This table contains configuration information about interface parameters currently set in the interface. Many of these objects have corresponding objects in the lapbAdmnTable." ::= { lapb 2 }
lapbOperEntry OBJECT-TYPE SYNTAX LapbOperEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "Currently set parameter values for a specific LAPB." INDEX { lapbOperIndex } ::= { lapbOperTable 1 }
LapbOperEntry ::= SEQUENCE { lapbOperIndex IfIndexType, lapbOperStationType
INTEGER, lapbOperControlField INTEGER, lapbOperTransmitN1FrameSize PositiveInteger, lapbOperReceiveN1FrameSize PositiveInteger, lapbOperTransmitKWindowSize INTEGER, lapbOperReceiveKWindowSize INTEGER, lapbOperN2RxmitCount INTEGER, lapbOperT1AckTimer PositiveInteger, lapbOperT2AckDelayTimer PositiveInteger, lapbOperT3DisconnectTimer PositiveInteger, lapbOperT4IdleTimer PositiveInteger, lapbOperPortId OBJECT IDENTIFIER, lapbOperProtocolVersionId OBJECT IDENTIFIER }
lapbOperIndex OBJECT-TYPE SYNTAX IfIndexType ACCESS read-only STATUS mandatory DESCRIPTION "The ifIndex value for the LAPB interface." ::= { lapbOperEntry 1 }
lapbOperStationType OBJECT-TYPE SYNTAX INTEGER { dte (1), dce (2), dxe (3) } ACCESS read-only STATUS mandatory DESCRIPTION "Identifies the current operating station type of this interface. A value of dxe (3) indicates XID negotiation has not yet taken place."
REFERENCE "ISO 7776 section 3.1" ::= { lapbOperEntry 2 }
lapbOperControlField OBJECT-TYPE SYNTAX INTEGER { modulo8 (1), modulo128 (2) } ACCESS read-only STATUS mandatory DESCRIPTION "The current operating size of the sequence numbers used to number frames." REFERENCE "ISO 7776 section 3.3" ::= { lapbOperEntry 3 }
lapbOperTransmitN1FrameSize OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-only STATUS mandatory DESCRIPTION "The current operating N1 frame size used for the maximum number of bits in a frame this DTE can transmit. This excludes flags and 0 bits inserted for transparency." REFERENCE "ISO 7776 section 5.7.3" ::= { lapbOperEntry 4 }
lapbOperReceiveN1FrameSize OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-only STATUS mandatory -- See lapbOperTransmitN1FrameSize above DESCRIPTION "The current operating N1 frame size used for the maximum number of bits in a frame the DCE/remote DTE can transmit. This excludes flags and 0 bits inserted for transparency." ::= { lapbOperEntry 5 }
lapbOperTransmitKWindowSize OBJECT-TYPE SYNTAX INTEGER (1..127) ACCESS read-only STATUS mandatory DESCRIPTION "The current PDU window size this Interface uses to transmit. This is the maximum
number of unacknowledged sequenced PDUs that may be outstanding from this DTE at any one time." REFERENCE "ISO 7776 section 5.7.4" ::= { lapbOperEntry 6 }
lapbOperReceiveKWindowSize OBJECT-TYPE SYNTAX INTEGER (1..127) ACCESS read-only STATUS mandatory DESCRIPTION "The current receive PDU window size for this Interface. This is the maximum number of unacknowledged sequenced PDUs that may be outstanding from the DCE/remote DTE at any one time." REFERENCE "ISO 7776 section 5.7.4" ::= { lapbOperEntry 7 }
lapbOperN2RxmitCount OBJECT-TYPE SYNTAX INTEGER (0..65535) ACCESS read-only STATUS mandatory DESCRIPTION "The current N2 retry counter used for this interface. This specifies the number of times a PDU will be resent after the T1 timer expires without an acknowledgement for the PDU." REFERENCE "ISO 7776 section 5.7.2" ::= { lapbOperEntry 8 }
lapbOperT1AckTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-only STATUS mandatory DESCRIPTION "The current T1 timer for this interface. This specifies the maximum time in Milliseconds to wait for acknowledgment of a PDU." REFERENCE "ISO 7776 section 5.7.1.1" ::= { lapbOperEntry 9 }
lapbOperT2AckDelayTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-only STATUS mandatory
DESCRIPTION "The current T2 timer for this interface. This specifies the maximum time in Milliseconds to wait before sending an acknowledgment for a sequenced PDU. A value of zero means there will be no delay in acknowledgement generation." REFERENCE "ISO 7776 section 5.7.1.2" ::= { lapbOperEntry 10 }
lapbOperT3DisconnectTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-only STATUS mandatory DESCRIPTION "The current T3 timer for this interface. This specifies the time in Milliseconds to wait before considering the link disconnected. A value of zero indicates the link will be considered disconnected upon completion of the frame exchange to disconnect the link." REFERENCE "ISO 7776 section 5.7.1.3" ::= { lapbOperEntry 11 }
lapbOperT4IdleTimer OBJECT-TYPE SYNTAX PositiveInteger ACCESS read-write STATUS mandatory DESCRIPTION "The current T4 timer for this interface. This specifies the maximum time in Milliseconds to allow without frames being exchanged on the data link. A value of 2147483647 indicates no idle timer is being kept." REFERENCE "ISO 7776 section 5.7.1.4" ::= { lapbOperEntry 12 }
lapbOperPortId OBJECT-TYPE SYNTAX OBJECT IDENTIFIER ACCESS read-only STATUS mandatory DESCRIPTION "This object identifies an instance of the index object in the first group of objects in the MIB specific to the physical device or interface used to send and receive
frames. If an agent does not support any such objects, it should return nullSpec OBJECT IDENTIFIER {0 0}." ::= { lapbOperEntry 13 }
lapbOperProtocolVersionId OBJECT-TYPE SYNTAX OBJECT IDENTIFIER ACCESS read-only STATUS mandatory DESCRIPTION "This object identifies the version of the lapb protocol implemented by this interface." ::= { lapbOperEntry 14 }
-- ########################################################### -- LAPB Flow Table -- ###########################################################
-- Support of the lapbFlowTable is mandatory for all -- agents of systems that implement LAPB.
lapbFlowTable OBJECT-TYPE SYNTAX SEQUENCE OF LapbFlowEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "This table defines the objects recorded by LAPB to provide information about the traffic flow through the interface." ::= { lapb 3 }
lapbFlowEntry OBJECT-TYPE SYNTAX LapbFlowEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "The information regarding the effects of flow controls in LAPB." INDEX { lapbFlowIfIndex } ::= { lapbFlowTable 1 }
LapbFlowEntry ::= SEQUENCE { lapbFlowIfIndex IfIndexType, lapbFlowStateChanges Counter,
lapbFlowChangeReason INTEGER, lapbFlowCurrentMode INTEGER, lapbFlowBusyDefers Counter, lapbFlowRejOutPkts Counter, lapbFlowRejInPkts Counter, lapbFlowT1Timeouts Counter, lapbFlowFrmrSent OCTET STRING, lapbFlowFrmrReceived OCTET STRING, lapbFlowXidReceived OCTET STRING }
lapbFlowIfIndex OBJECT-TYPE SYNTAX IfIndexType ACCESS read-only STATUS mandatory DESCRIPTION "The ifIndex value for the LAPB Interface." ::= { lapbFlowEntry 1 }
lapbFlowStateChanges OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "The number of LAPB State Changes, including resets." ::= { lapbFlowEntry 2 }
lapbFlowChangeReason OBJECT-TYPE SYNTAX INTEGER { notStarted (1), -- Initial state abmEntered (2), -- SABM or UA abmeEntered (3), -- SABME or UA abmReset (4), -- SABM in ABM abmeReset (5), -- SABME in ABME dmReceived (6), -- DM Response dmSent (7), -- DM sent discReceived (8), -- DISC Response discSent (9), -- DISC Sent
frmrReceived (10), -- FRMR Received frmrSent (11), -- FRMR Sent n2Timeout (12), -- N2 Timer Expired other (13) } ACCESS read-only STATUS mandatory DESCRIPTION "The reason for the most recent incrementing of lapbFlowStateChanges. A DM or DISC frame generated to initiate link set-up does not alter this object. When the MIB-II object ifOperStatus does not have a value of testing, there exists a correlation between this object and ifOperStatus. IfOperStatus will have a value of up when this object contains: abmEntered, abmeEntered, abmReset, or abmeReset. IfOperStatus will have a value of down when this object has a value of notStarted, or dmReceived through n2Timeout. There is no correlation when this object has the value other." ::= { lapbFlowEntry 3 }
lapbFlowCurrentMode OBJECT-TYPE SYNTAX INTEGER { disconnected (1), -- initial state or DISC received
linkSetup (2), -- SABM sent
frameReject (3), -- Invalid frame received and -- FRMR sent
disconnectRequest (4), -- DISC sent
informationTransfer (5), -- normal information transfer state -- SABM(E) sent and UA received, or -- SABM(E) received and UA sent
rejFrameSent (6), -- invalid NS received and REJ sent
waitingAcknowledgement (7),
-- T1 expired and RR sent
stationBusy (8), -- RNR sent
remoteStationBusy (9), -- RNR received
bothStationsBusy (10), -- RNR received and RNR sent
waitingAckStationBusy (11), -- T1 expired, RNR sent
waitingAckRemoteBusy (12), -- T1 expired, RNR received
waitingAckBothBusy (13), -- T1 expired, RNR sent, -- and RNR received
rejFrameSentRemoteBusy (14), -- REJ sent and RNR received
xidFrameSent (15), -- XID frame sent
error (16), -- An error state other than -- a one defined above
other (17) -- A state not listed above } ACCESS read-only STATUS mandatory DESCRIPTION "The current condition of the conversation." ::= { lapbFlowEntry 4 }
lapbFlowBusyDefers OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "The number of times this device was unable to transmit a frame due to a perceived remote busy condition. Busy conditions can
result from the receipt of an RNR from the remote device, the lack of valid sequence number space (window saturation), or other conditions." ::= { lapbFlowEntry 5 }
lapbFlowRejOutPkts OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "The number of REJ or SREJ frames sent by this station." ::= { lapbFlowEntry 6 }
lapbFlowRejInPkts OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "The number of REJ or SREJ frames received by this station." ::= { lapbFlowEntry 7 }
lapbFlowT1Timeouts OBJECT-TYPE SYNTAX Counter ACCESS read-only STATUS mandatory DESCRIPTION "The number of times a re-transmission was effected by the T1 Timer expiring." ::= { lapbFlowEntry 8 }
lapbFlowFrmrSent OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..7)) ACCESS read-only STATUS mandatory DESCRIPTION "The Information Field of the FRMR most recently sent. If no FRMR has been sent (the normal case) or the information isn't available, this will be an OCTET STRING of zero length." REFERENCE "ISO 7776 Section 4.3.9, tables 7 and 8" ::= { lapbFlowEntry 9 }
lapbFlowFrmrReceived OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..7))
ACCESS read-only STATUS mandatory DESCRIPTION "The Information Field of the FRMR most recently received. If no FRMR has been received (the normal case) or the information isn't available, this will be an OCTET STRING of zero length." REFERENCE "ISO 7776 Section 4.3.9, tables 7 and 8" ::= { lapbFlowEntry 10 }
lapbFlowXidReceived OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..8206)) ACCESS read-only STATUS mandatory DESCRIPTION "The Information Field of the XID frame most recently received. If no XID frame has been received, this will be an OCTET STRING of zero length." REFERENCE "ISO 8885" ::= { lapbFlowEntry 11 }
-- ########################################################### -- LAPB XID Table -- ###########################################################
-- Support for the lapbXidTable is mandatory for all agents -- of systems that have a LAPB implementation using XID -- negotiation. Agents of systems without XID negotiation -- support should not implement this table.
lapbXidTable OBJECT-TYPE SYNTAX SEQUENCE OF LapbXidEntry ACCESS not-accessible STATUS mandatory DESCRIPTION "This table defines values to use for XID negotiation that are not found in the lapbAdmnTable. This table is optional for implementations that don't support XID and mandatory for implementations that do initiate XID negotiation." ::= { lapb 4 }
lapbXidEntry OBJECT-TYPE SYNTAX LapbXidEntry
ACCESS not-accessible STATUS mandatory DESCRIPTION "XId negotiation parameter values for a specific LAPB." INDEX { lapbXidIndex } ::= { lapbXidTable 1 }
LapbXidEntry ::= SEQUENCE { lapbXidIndex IfIndexType, lapbXidAdRIdentifier OCTET STRING, lapbXidAdRAddress OCTET STRING, lapbXidParameterUniqueIdentifier OCTET STRING, lapbXidGroupAddress OCTET STRING, lapbXidPortNumber OCTET STRING, lapbXidUserDataSubfield OCTET STRING }
lapbXidIndex OBJECT-TYPE SYNTAX IfIndexType ACCESS read-only STATUS mandatory DESCRIPTION "The ifIndex value for the LAPB interface." ::= { lapbXidEntry 1 }
lapbXidAdRIdentifier OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..255)) ACCESS read-write STATUS mandatory DESCRIPTION "The value of the Address Resolution Identifier. A zero length string indicates no Identifier value has been assigned." REFERENCE "ISO 8885 Table 2, Name: Identifier" DEFVAL { ''h } ::= { lapbXidEntry 2 }
lapbXidAdRAddress OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..255))
ACCESS read-write STATUS mandatory DESCRIPTION "The value of the Address Resolution Address. A zero length string indicates no Address value has been assigned." REFERENCE "ISO 8885 Table 2, Name: Address" DEFVAL { ''h } ::= { lapbXidEntry 3 }
lapbXidParameterUniqueIdentifier OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..255)) ACCESS read-write STATUS mandatory DESCRIPTION "The value of the parameter unique Identifier. A zero length string indicates no Unique identifier value has been assigned." REFERENCE "ISO 8885 Table 3, Name: Identifier" DEFVAL { ''h } ::= { lapbXidEntry 4 }
lapbXidGroupAddress OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..255)) ACCESS read-write STATUS mandatory DESCRIPTION "The value of the parameter Group address. A zero length string indicates no Group address value has been assigned." REFERENCE "ISO 8885 Table 3, Name: Group address" DEFVAL { ''h } ::= { lapbXidEntry 5 }
lapbXidPortNumber OBJECT-TYPE SYNTAX OCTET STRING (SIZE (0..255)) ACCESS read-write STATUS mandatory DESCRIPTION "The port number assigned for this link. A zero length string indicates no local port number identifier has been assigned." REFERENCE "ISO 8885 Table 3, Name: Port number" DEFVAL { ''h } ::= { lapbXidEntry 6 }
lapbXidUserDataSubfield OBJECT-TYPE
SYNTAX OCTET STRING (SIZE (0..8206)) ACCESS read-write STATUS mandatory DESCRIPTION "A user data subfield, if any, to be transmitted in an XID frame. A zero length frame indicates no user data subfield has been assigned. The octet string should include both the User data identifier and User data field as shown in Figures 1 and 4." REFERENCE "ISO 8885 section 4.3" DEFVAL { ''h } ::= { lapbXidEntry 7 }
-- ########################################################### -- LAPB protocol versions -- ###########################################################
lapbProtocolVersion OBJECT IDENTIFIER ::= { lapb 5 }
lapbProtocolIso7776v1986 OBJECT IDENTIFIER ::= { lapbProtocolVersion 1 }
lapbProtocolCcittV1980 OBJECT IDENTIFIER ::= { lapbProtocolVersion 2 }
lapbProtocolCcittV1984 OBJECT IDENTIFIER ::= { lapbProtocolVersion 3 }
-- The following describes some of the MIB-II interface -- objects and their relationship with the objects in this -- MIB extension.
-- ifDescr: describes the interface. It should include -- identification information for the physical line and a -- description of the network. For connections to PDNs, -- it should name the PDN.
-- ifMtu: the maximum number of octets an upper layer can -- pass to this interface as a single frame.
-- ifSpeed:
-- ifAdminStatus:
-- ifOperStatus:
-- ifLastChange: the last time the state of the interface -- changed. A reset is considered an instantaneous change to -- the ndm state and back to abm or abme. This will be the -- last time that lapbFlowChangeReason and lapbFlowChanges -- changed.
-- ifInOctets: contains the number of octets -- received from the peer LAPB including FCS.
-- ifInUcastPkts: contains the number of I-frames delivered -- by this interface to a higher layer interface.
-- ifInDiscards: contains the number of received -- frames discarded because of internal conditions -- (such as lack of buffering).
-- ifInErrors: contains the number of Invalid frames received. -- This does not have any relationship with the number REJ, -- or RNR frames sent or received.
-- ifInUnknownProtos: contains the number of frames -- that were correct but were dropped because they -- were inappropriate for the current state. This -- includes an invalid Poll bit, an unknown address, -- or other condition such as an RNR when connection -- not established. This also includes the number of -- DISC or other frames that were ignored because the -- link was not established and this interface was not -- configured to perform link setup on that type frame.
-- ifOutOctets: number of octets sent to peer including -- FCS octets.
-- ifOutUcastPkts: number of I-frames received from -- a higher layer for transmission to peer.
-- ifOutDiscards: number of frames to be sent that were -- dropped due to internal conditions such as buffering etc.
-- ifOutErrors: number of transmissions that failed -- due to errors or were considered invalid by the receiver. -- This does not have any relationship with the number REJ, -- or RNR frames sent or received.
-- ifOutQLen: number of frames waiting to be transmitted.
-- This MIB does not provide any support for: -- Multilink procedure (MLP) in ISO 7776 section 6 -- LLC Pbit timer -- LLC REJ timer -- LLC Busy State Timer 7.8.1.4
-- ###########################################################
END
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