NCLHELP.HLB  —  Event Messages, hdlc_link
 o  buffer unavailable error

    Generated each time a frame is discarded because there is no
    receive buffer available.

 o  link down

    Generated each time the entity is disabled.

 o  link up

    Generated each time the entity is enabled.

 o  pdu receive overrun

    Generated each time the Physical layer entity reports a receive
    overrun.

 o  pdu transmit failed

    Generated each time an attempt to send a frame fails.  Argument:

    pdu transmit   Failure reason received from the Physical layer
    failed         entity.
    reason
                   disabled    The network manager has disabled the
                               line.

                   line down   The line is in the failed state.

                   no service  The Physical layer service is not
                               available.

1  –  logical_station

 o  frmr generated

    Generated each time the logical station rejected a received
    frame.  Arguments:

    frmr        Contents of the frame reject frame that is returned
                to the remote station.

    frmr        Reason for rejecting the frame.
    reason
                control      One of the control fields is undefined
                             or not implemented by the local station.

                format       The frame's control field is invalid
                             because the frame contained information
                             that is not allowed, the frame is
                             supervisory, or the frame is unnumbered
                             and has the wrong length.

                length       The information field of the frame
                             exceeds the maximum capacity.

                nonspecific  The received frame contains an
                             unspecified number or type of error.

                nr           The frame's control field contains an
                             invalid N(R).

    received    Header of the frame that caused the generation of the
    pdu         event.

 o  frmr received

    Generated each time the remote station rejected a frame.
    Arguments:

    frmr        Contents of the frame reject frame that is returned
                to the remote station.

    frmr        Reason for rejecting the frame.
    reason
                control      One of the control fields is undefined
                             or not implemented by the local station.

                format       The frame's control field is invalid
                             because the frame contained information
                             that is not allowed, the frame is
                             supervisory, or the frame is unnumbered
                             and has the wrong length.

                length       The information field of the frame
                             exceeds the maximum capacity.

                nonspecific  The received frame contains an
                             unspecified number or type of error.

                nr           The frame's control field contains an
                             invalid N(R).

    received    Received FRMR that caused the generation of the
    pdu         event.

 o  negotiation failed

    Generated each time XID negotiation fails.  Arguments:

    negotiation Reason that negotiation with the remote station
    failure     failed.
    reason
                address id   The preferred addresses and the address-
                not unique   negotiation unique IDs were identical.

                incompatible The remote station wanted to use HDLC's
                address      extended addressing which the Digital
                modes        Network Architecture's implementation
                             does not support.

                incompatible Incompatible  CRC types were specified by
                crc types    the two stations.

                incompatible Incompatible  sequence moduli were
                sequence     specified by the two stations.
                moduli

                link type    There has been an attempt to initialize
                mismatch     using classes of procedures that are not
                             appropriate for the specified link type.

                maximum      The negotiated maximum frame size
                pdu size     is less than the value of the hdlc
                too small    link entity's minimum data size
                             characteristic.

                negotiation  The remote station performed an illegal
                error        negotiation operation.

                no           There has been no valid reponse from
                response     the remote station to the generated XID
                             within the number of times specified
                             by the hdlc link entity's retry maximum
                             characteristic.

                parameter    The parameter IDs that should be unique
                id not       are not so.
                unique

                protocol     An attempt has been made to initialize
                id           sequenced data ports with different
                mismatch     protocol IDs.

                transmission Mismatch  in the sync/async bit in the
                type         XID.
                mismatch

                ui not       An attempt has been made to initialize
                supported    without the UI optional function, which
                             is required when running MOP over an
                             HDLC link.

    local xid   The XID that the local station used during the failed
                negotiation.

    remote xid  The XID that the remote station used (if any) during
                the failed negotiation.

 o  station halted

    Generated each time the logical station's status attribute
    protocol state becomes halted.  Argument:

    station     Reason for the logical station to halt its protocol.
    halted
    reason
                disc         A DISC frame was received from the
                             remote station.

                dm           A DM frame was received from the remote
                             station.

                fbit error   A frame was received from the remote
                             station with an error in the F-bit.

                frmr         An FRMR frame was received from the
                             remote station.

                local        The initialization was as a result of
                             the enable command.

                maximum      The number of times that a frame has
                retry        been sent has exceeded the value of
                             the hdlc link entity's retry maximum
                             characteristic.

                physical     There was a failure in the Physical
                             layer.

                unsolicited  An unsolicited UA frame was received
                ua           from the remote station.

                user         The initialization was as a result of
                             local user action.

                window       The initialization occurred as part of
                error        the recovery from a windowing error.

 o  station initializing

    Generated each time the logical station's protocol is
    successfully initialized or reinitialized.

    Argument:

    station     Reason for the logical station to initialize its
    initial-    protocol.
    izing
    reason
                disc         A DISC frame was received from the
                             remote station.

                dm           A DM frame was received from the remote
                             station.

                fbit error   A frame was received from the remote
                             station with an error in the F-bit.

                frmr         An FRMR frame was received from the
                             remote station.

                local        The initialization was as a result of
                             the enable command.

                maximum      The number of times that a frame has
                retry        been sent has exceeded the value of
                             the hdlc link entity's retry maximum
                             characteristic.

                physical     There was a failure in the Physical
                             layer.

                unsolicited  An unsolicited UA frame was received
                ua           from the remote station.

                user         The initialization was as a result of
                             local user action.

                window       The initialization occurred as part of
                error        the recovery from a windowing error.

                xid          An XID frame was received from the
                             remote station.

 o  station inoperative

    Generated each time the status attribute protocol state becomes
    inoperative.

 o  station maintenance

    Generated each time the status attribute protocol state becomes
    maintenance.

 o  station resetting

    Generated each time the status attribute protocol state becomes
    resetting.  Argument:

    station     Reason for the logical station to perform a reset
    resetting   operation.
    reason
                fbit error   A frame was received from the remote
                             station with an error in the F-bit.

                frmr         An FRMR frame was received from the
                             remote station.

                maximum      The number of times that a frame has
                retry        been sent has exceeded the value of the
                             entity's retry maximum characteristic.

                sabm         A SABM frame was received from the
                             remote station.

                unsolicited  An unsolicited UA frame was received
                ua           from the remote station.

                window       The initialization occurred as part of
                error        the recovery from a windowing error.

 o  station running

    Generated each time the logical station's protocol has been
    successfully initialized. In addition, the status attribute
    protocol state changes to running.

 o  station setup failed

    Generated each time the logical station's protocol fails to be
    initialized following either:

    o  The expiration of the entity's maximum retry characteristic
       when in the initializing state

    o  A forced disconnection from the remote station

 o  unknown ui pdu received

    Generated each time an unsequenced frame is received specifying a
    protocol ID to which a port has not been opened on this station.
    Argument:

    received    Received UI frame which caused this event to be
    pdu         generated.
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