NCLHELP.HLB  —  show  lapb
    show  [node node-id] lapb  version
                               all [attributes]
                               all characteristics

1  –  Characteristic

 o  version

    Default: None	    Value: Current version number

    Version number of the DNA HDLC architecture to which this
    implementation conforms. You cannot modify this characteristic.

2  –  link

    show [node node-id] lapb -
              link simple-name  attribute [,attribute...]
                                all [attributes]
                                all characteristics
                                all counters
                                all identifiers
                                all status

    Examples:

    show lapb link * name, protocol state

    show lapb link link-0 all

2.1  –  Characteristics

 o  acknowledge timer

    Default: Supplied by profile     Value: 1-60000

    Time, in milliseconds, to wait for an acknowledgment before
    initiating recovery action. This attribute corresponds to the
    LAPB parameter T1. You can modify this characteristic only when
    the entity is disabled.

 o  holdback timer

    Default: Implementation specific    Value: 0-60000

    Delay, in milliseconds, before an acknowledgment must be sent.
    This characteristic corresponds to the LAPB parameter T2. You can
    modify this characteristic only when the entity is disabled.

 o  interface type

    Default: dte           Value: dce or dte

    Address mode for this link.

    dce   Use DCE address mode.
    dte   Use DTE address mode.

    You can modify this characteristic only when the entity is
    disabled.

 o  maximum data size

    Default: Supplied by   Value: 1-65532
    profile

    Maximum frame size, in octets, of an information field in an
    I-frame.

 o  physical line

    Default: No default    Value: Local entity name

    Name of the Physical layer and line entity over which the LAPB
    protocol is to operate. You must give this characteristic a value
    before you enable the link.

 o  poll timer

    Default: Implementation specific   Value: Supplied by profile

    Maximum period in seconds that may elapse without frames being
    exchanged on the Data Link. On expiration, an RR(P) is sent to
    elicit a response from the other end.

 o  profile

    Default: No default           Value: String

    Name of the X.25 Level 2 Profile that defines subscription
    details associated with the PSDN to which this DTE is connected.
    You cannot modify this characteristic. This characteristic is set
    by means of an argument to the create command.

 o  receive buffers (OpenVMS)

    Default: Implementation specific    Value: 1-128

    Specifies the number of receive data buffers.

 o  retry maximum

    Default: Supplied by profile       Value: 1-255

    Maximum number of times that a frame will be retransmitted
    before assuming a fatal error, at which point more drastic
    error recovery action will be attempted. This characteristic
    corresponds to the LAPB parameter N2.

 o  sequence modulus

    Default: Supplied by profile      Value: 8 or 128

    Type of sequence numbering.

    8     Use normal sequence numbering.
    128   Use extended sequence numbering.

 o  window size

    Default: Supplied by profile      Value: 1-127

    Window size for transmitting and receiving I-frames. This
    characteristic corresponds to the LAPB parameter K.

2.2  –  Counters

 o  buffer unavailable errors (OpenVMS)

    Number of times that the underlying framing level has indicated
    system buffer unavailability to the Data Link layer.

 o  crc errors received

    Number of frames received with a bad CRC.

 o  creation time

    Time at which the entity was created.

 o  data octets received

    Number of data octets received from the remote station. This
    value does not include retransmissions.

 o  data octets sent

    Number of data octets sent to the remote station. This value does
    not include retransmissions.

 o  data pdus received

    Number of I-frames received from the remote station. This value
    does not include retransmissions.

 o  data pdus sent

    Number of I-frames sent to the remote station. This value does
    not include retransmissions.

 o  frmrs sent

    Number of FRMR frames generated as a result of invalid incoming
    frames.

 o  frmrs received

    Number of FRMR frames received.

 o  polls received

    Number of command frames received with the P-bit set.

 o  rejs received

    Number of REJ frames received.

 o  rejs sent

    Number of REJ frames transmitted.

 o  rnrs received

    Number of RNR frames received.

 o  rnrs sent

    Number of RNR frames transmitted.

 o  times acknowledge timer expired

    Number of times the local acknowledge timer has expired.

 o  times link halted

    Number of times the link halt event has been generated.

 o  times link initializing

    Number of times the link initializing event has been generated.

 o  times link inoperative

    Number of times the link inoperative event has been generated.

 o  times link maintenance

    Number of times the link maintenance event has been generated.

 o  times link resetting

    Number of times the link reset event has been generated.

 o  times link running

    Number of times the link running event has been generated.

 o  times link setup failed

    Number of times the link setup failure event has been generated.

 o  times link state changed

    Number of times a link state transition has occurred.

 o  times pdu receive overrun

    Specifies the number of times a physical line indicated an
    overrun condition to the Data Link layer.

 o  times pdu transmit failed

    Number of times an attempt to transmit a frame has failed.

2.3  –  Identifier

 o  name

    Simple name assigned to the link when it is created.

2.4  –  Status

 o  line type

    Type of line over which this link operates.

    nonswitched    The line is a nonswitched line.

    switched       The line is a switched line.

 o  maximum pdu size

    Maximum frame size, in octets, that this station will receive and
    transmit. This value includes the frame header.

 o  physical port

    Name of the Physical layer port with which the link is
    associated.

 o  protocol state

    State of the LAPB protocol with respect to the remote station.

    error          The protocol is in a recognized error state.

    halted         The protocol has halted.

    initializing   The protocol is being initialized.

    inoperative    The protocol cannot be started without
                   connectivity to the remote station.

    maintenance    The link is in maintenance mode.

    resetting      The protocol is undergoing a reset operation.

    running        The protocol is running normally.

 o  state

    Status of the lapb link entity.

    off   The link is disabled.

    on    The link is enabled.

 o  uid

    Entity's unique identifier, which is generated when the entity is
    created.

3  –  port

    show  [node node-id] lapb -
                port port-name  attribute [,attribute...]
                                all [attributes]
                                all identifiers
                                all status
    Examples:

    show lapb port * all

    show lapb port * name, state

3.1  –  Identifier

 o  name

    Simple name assigned to the port when it is created.

3.2  –  Status

 o  client name

    Name of the client with which the port is associated.

 o  link

    Name of the link with which the port is associated.

 o  state

    State of the lapb port entity.

    open           The port is assigned to a client.

    open           The port is assigned to a client, but the
    disabled       associated link is disabled.

 o  type

    Type of port.

    sequenced      The port is used for sending LAPB data.

    unsequenced    The port is used for sending loopback data.
                   This is only possible if the maintenance mode
                   characteristic of the relevant lapb link entity is
                   set to true.
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