File: rfc1381.mib

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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