Library /sys$common/syshlp/NCLHELP.HLB  —  show  osi_transport, Characteristics
 o  clns classes supported

    Default: Class {4}     Value: Bit-set

    Set of protocol classes supported on the Connectionless Networt
    Service (CLNS). You cannot modify this characteristic.

 o  cltp nsap selector (Tru64 UNIX)

    Default: 0             Value: 0-255 (except 32)

    The NSAP selector to use for CLTS when running over CLNS. If the
    value is 0 or 1, a single NSAP is shared between the Connection-
    Oriented Transport Service (COTS), and the connectionless
    transport protocol according to the osi transport attribute nsap
    selector. If both nsap selectors are 0 or 1, then COTS and CLTS
    over CLNS are disabled.

    This attribute cannot be set either to 32, which is the value
    of the NSP NSAP selector, or to the current setting of the osi
    transport attribute, nsap selector, if the attribute has a value
    other than 0 or 1.

    This attribute cannot be modified when transport is enabled.

 o  congestion avoidance

    Default: True          Value: True or false

    Enables the use of the automatic congestion avoidance mechanism
    to reduce the transport window size in response to an indication
    from the Network layer when operating on the Connectionless
    Network Service (CLNS).

 o  cons classes supported

    Default: Classes {0, 2, 4}   Value: set of classes

    Set of protocol classes supported on the Connection-Oriented
    Network Service (CONS). You cannot modify this characteristic.
    See X.25/CONS Configuration for more information.

 o  cons filters

    Default: { }           Value: Set of simple names

    The names of X.25 Access module filters used to determine which
    inbound network connection requests should be directed to the
    transport entity.

    On OpenVMS Modification of this attribute while OSI transport is
    enabled is permitted only with the add command.  The set and
    remove commands can only be used to modify this attribute when the
    OSI transport is disabled.

    For each cons filter, there must be a corresponding x25 access
    template with the same name. One or more of these filters must be
    specified in order to run COTS over CONS. The X.25 access filter
    osi transport is typically used. See X.25/CONS Configuration for
    more information.

 o  cons nsap addresses

    Default: { }           Value: Set of NSAP addresses

    The set of valid NSAP addresses for use with CONS. One or more
    NSAPs must be specified to run COTS over CONS. See the DECnet-Plus
    for Tru64 UNIX Programming manual for more information.

 o  delay factor

    Default: 4             Value: 2-15

    Factor by which to multiply the current value of the round-trip
    delay estimate status attribute in order to set a value for the
    retransmission timer. This attribute works with protocol class 4
    only.

 o  delay weight

    Default: 5             Value: 0-255

    Relative weighting to apply to the current estimate and to a new
    sample when estimating round-trip delay. This attribute works
    with protocol class 4 only.

 o  disconnect holdback

    Default: 0             Value for Tru64 UNIX: 0-(2 raised to the
                                                    power of 31 -1)
    Default: 0             Value for OpenVMS: 0-4294967295

    When operating over the Connection-Oriented Network Service
    (CONS), the length of the time to maintain a network connection
    for possible reuse after all transport connections multiplexed
    upon it have been disconnected. Specified in seconds. This
    characteristic may not be changed while the transport entity
    is enabled. See X.25/CONS Configuration for more information.

 o  dna version

    Default:               Value: V1.0.0

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

 o  iso version

    Default:               Value: 1

    Version number of ISO 8073 to which the implementation
    conforms. You cannot modify this characteristic.

 o  maximum cltp ports (Tru64 UNIX)

    Default: 128           Value: 0-4294967295

    Maximum number of CLTS ports at one time. This characteristic can
    only be increased while transport is enabled. You can modify this
    characteristic to a lower value only when the entity is disabled.

 o  maximum listeners (Tru64 UNIX)

    Default: 32            Value: 1-65535

    Maximum number of listeners at one time. This characteristic can
    only be increased while transport is enabled. You can modify this
    characteristic to a lower value only when the entity is disabled.

 o  maximum multiplexing

    Default for Tru64 UNIX: 1023         Value: 1-1023

    Default for OpenVMS: 4294967295      Value: 1-4294967295

    When operating over the Connection-Oriented Network Service
    (CONS), the maximum number of transport connections that can be
    multiplexed on any single network connection. This characteristic
    can be increased only when the transport entity is enabled.
    You can modify this characteristic to a lower value only when
    the entity is disabled. See X.25/CONS Configuration for more
    information.

 o  maximum network connections

    Default for Tru64 UNIX: 1023         Value: 0-1023

    Default for OpenVMS: 4294967295      Value: 0-4294967295

    When operating over the Connection-Oriented Network Service
    (CONS), the maximum number of network connections which can be
    in use concurrently by DNA OSI Transport. This characteristic
    can be incresed only when the transport entity is enabled.
    See X.25/CONS Configuration for more information.

 o  maximum receive buffers (OpenVMS)

    Default: 2000            Value: 1-4294967295

    Maximum number of receive buffers that can store received
    DT transport PDUs. You can modify this characteristic only
    when the entity is disabled. Also, you can only increase the
    characteristic value.

 o  maximum remote nsaps

    Default for Tru64 UNIX: 160                Value: 1-65536

    Default for OpenVMS: 201                   Value: 0-4294967295

    Maximum number of remote NSAPs that can exist concurrently. This
    value must be greater than the current value of maximum transport
    connections. You can modify this characteristic to a lower value
    only when the entity is disabled. This characteristic can be
    increased when enabled.

 o  maximum transport connections

    Default for Tru64 UNIX: 128     Value: 0-1023

    Default for OpenVMS: 200        Value: 0-4294967295

    Maximum number of active transport connections allowed at one
    time. Must be less than the current value of maximum remote
    nsaps. You can modify this characteristic to a lower value only
    when the entity is disabled.

 o  maximum window

    Default for Tru64 UNIX: 20              Value: 1-65535

    Default for OpenVMS: 8                  Value: 1-65535

    Maximum credit window that can be granted on a transport
    connection. This is used for control of the number of data
    segments (PDUs) allowed to be transmitted over a particular
    transport connection before at least one acknowledgment must
    be returned from the destination system. If the number of
    PDUs already transmitted equals the maximum window and no
    corresponding acknowledgments have been received, transport
    stops sending PDUs over the transport connection and waits for
    an acknowledgment message. You can modify this characteristic to
    a lower value only when the entity is disabled.

 o  nsap selector

    Default: 33            Value: 0-255 (except 32)

    The NSAP selector to use for the Connection-Oriented Transport
    Service (COTS) when running over CLNS. If 0 or 1, COTS over CLNS
    is not enabled. This attribute cannot be set to 32, which is the
    value of the NSP NSAP selector. Or, on Tru64 UNIX, to the current
    setting of the osi transport attribute cltp nsap selector if it
    is other than 0 or 1.

    This attribute cannot be modified when transport is enabled.

 o  RFC1006 listener ports (OpenVMS)

    Default: { 102, 399 }      Value: Set of TCP/IP port numbers

    The names of the TCP listener ports used to receive inbound
    RFC1006 connection requests. This is applicable for both RFC1006
    and RFC1006 Extension connections.

    Modification of this attribute while OSI transport is enabled is
    permitted only with the add command.  The set and remove commands
    can only be used to modify this attribute when the OSI transport
    is disabled.

 o  RFC1006 listener ipaddresses (OpenVMS)

    Default: { 0.0.0.0 }      Value: Set of IP Addresses

    The names of the listener IP addresses used to receive inbound
    RFC1006 connection requests. This is applicable for both RFC1006
    and RFC1006 Extension connections.

    Modification of this attribute while OSI transport is enabled is
    permitted only with the add command.  The set and remove commands
    can only be used to modify this attribute when the OSI transport
    is disabled.

 o  support map

    Default: None               Value: False

    Specifies whether the implementation supports the MAP
    (manufacturing automation protocol) entity. You cannot modify
    this characteristic.
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