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.