HP 3000 Manuals HP 3000 Manuals
Parameter Descriptions (contd) NPSI Macro and Operand Descriptions This section describes the NPSI macros and operands listed in the preceding tables. This section contains generic descriptions of NPSI macros and operands. Refer to the tables earlier in this chapter for operand values that are specific to the configuration of HP SNA products. See the X.25 Network Control Program Packet Switching Interface manual for the remote system for a more thorough explanation of the parameters and their values.
NOTE NPSI is not supported with any MPE/V SNA products.
BUILD. The BUILD macro starts the generation process of control blocks, including those for X.25.
NOTE The BUILD parameters listed in this chapter are additional parameters required by X.25 NPSI. The list does not contain all parameters necessary for a complete BUILD statement.
X25.MAXPIU Specifies the maximum inbound Path Information Unit (PIU) length. Can be coded in bytes or kilobytes. Default: 64K Range: (in kilobytes) 2K-64K, (in bytes) 1296-65535 X25.MWINDOW Specifies the frame window size used by Link Access Protocol Balanced (LAPB). Default: None Range: (decimal) 1-7 X25.PREFIX Specifies the first letter that will be used for X.25 NPSI default resource names. Default: X Range: A-X X25.SNAP Specifies whether the SNAP trace facility is turned on during system generation. Default: NO Range: YES, NO X25.USGTIER Specifies the usage tier of the operations of the X.25 NPSI level module. Value must be less than or equal to the usage tier installed with the remote system. Refer to the IBM licensing agreement to determine the usage tier installed. Default: 1 Range: (decimal) 1-5 X25.NET. The X25.NET statement describes a Packet Switched Data Network. Each PSDN connected to the host must be described by a separate X25.NET statement. Up to nine X25.NET statements may be specified. DM Specifies whether the Packet Switched Data Network (PSDN) receives or sends the LAPB DM command. Note that the DM command is not supported by all PSDNs. Default: None Range: YES, NO CPHINDX Specifies the highest index value coded for the X25.VCCPT statements in this NPSI generation. Default: 1 Range: 1-99 NETTYPE Specifies the network type in terms of the RESET commands that are exchanged. NETTYPE=1. When X.25 NPSI receives a RESET 07, it stops sending physical services commands to the remote DTE until it receives a RESET 00, 09, or 0F. NETTYPE=3. When X.25 NPSI receives a RESET 07, it continues sending physical services commands to the remote DTE, because a network defined as type 3 (DDX-P) does not compensate a RESET 07 by a RESET 09. Default: 1 Range: 1, 3 OUHINDX Specifies the highest index value coded for any X25.OUFT statement within this NPSI generation. Default: 1 Range: 01-99 X25.VCCPT. The X25.VCCPT statement defines the connection parameters for one or more virtual circuits. One statement is required for each entry in the virtual circuit connection parameter table. Up to 99 can be coded. INDEX Specifies an index number to an entry in the Virtual Circuit Connection Parameter Table. Must correlate to the VCCINDX keyword of the X25.LINE statement. Default: None Range: 1-99 MAXPKL Specifies the maximum length of the data in the packets to be sent or received over the virtual circuits associated with this X25.VCCPT entry. Default: None Range: 32, 64, 128, 256, 512, 1024, 2048, 4096 INSLOW Specifies the percentage of free buffers that must be used before entering unsafe or danger conditions for the virtual circuits associated with this VCCPT entry. When this keyword is coded, two percentages must be supplied, separated by a comma. Percentage 1--the unsafe percentage Percentage 2--the danger percentage These values are not absolute; they are defined in relation to the value of the NCP SLODOWN keyword. For example, coding INSLOW=(12,6) means that the unsafe buffer use level is 12 percent higher than the value of SLODOWN and the danger buffer use level is 6 percent higher than the value of SLODOWN. The unsafe percentage must be greater than the danger percentage. Default: (50,12) Range: 0, 6, 12, 25, 50, 100 VWINDOW Specifies the size of the transmit or receive window for the virtual circuits indexed to this VCCPT entry. The value specified must be less than the packet modulo value defined in the X25.MCH statement. Default: 2 Range: 1-127 X25.OUFT. The X25.OUFT statement specifies the user facilities and call user data that will be included in the Call Request Packet for an outgoing call. No X25.OUFT statement is required for Permanent Virtual Circuits. At least one X25.OUFT statement is required for each NPSI generation that defines Switched Virtual Circuits. INDEX Identifies the entry in the optional user facilities table. This index number is used in the TYPE keyword of the X25.LINE statement to reference the facility set to be used on the line. Default: None Range: 1-99 X25.MCH. The X25.MCH statement describes a physical circuit (serving one or more virtual circuits) to X.25 NPSI. ADDRESS Specifies the full duplex line interface address. Code one to three decimal digits. Default: N/A Range: 0-63 (for 3720), 0-511 (for 3745) FRMLGTH IBM requires that the value specified for FRMLGTH equal the MAXPKL (see X25.VCCPT macro) size plus 3 bytes for the modulo 8 X.25 packet header. (HP supports modulo 8 only). IBM's FRMLGTH does not equal the X.25 N1 parameter divided by 8. Note that this value will not be the same as the Frame Size value in the HP DTC configuration. HP DTC configuration interprets Frame Size to equal the value of the X.25 N1 parameter divided by 8, which is the sum of the data packet size plus 3 bytes for the packet header and 4 bytes for the LAP-B header and LAP-B trailer. HP's Frame Size value reflects the maximum frame length in bytes flowing over the physical circuit. Default: None Range: 35-4100 LCGDEF Specifies the highest logical channel number for each logical channel group defined. Values are defined in pairs, as follows: LCG--specifies the number of the LCG LCGI--specifies the highest number for that LCG Default: N/A Range: Refer to LCGN operand of the X25.LCG statement MWINDOW Specifies the frame window size to be used by X.25 link access protocol level 2. Default: None Range: 1-7 ANS Specifies whether the station is to stop or continue when ACF/NCP goes into automatic network shutdown. Default: None Range: [CONT]INUE, STOP CONNECT Specifies whether X.25 NPSI fast connect is to be used on this physical circuit. Default: NO Range: YES, NO, CUD0, SUBD DBIT Specifies whether the deliver confirmation bit should be used. Used for non-SNA DTEs. Default: NO Range: YES, NO DIRECT Specifies whether the physical circuit described by this MCH is directly attached to a communications controller, or a peripheral node. Default: NO Range: YES, NO DSABLTO Specifies the delay during which the DTE expects DSR to be dropped after the disable command is issued. Default: 3.0 seconds Range: 0.1-1632.0 seconds (specified in tenths of a second) ENABLTO Specifies the maximum delay during which the DTE expects the DSR signal to come up after the enable command is issued. Default: 3.0 seconds Range: 0.1-1632.0 seconds (specified in tenths of a second) GATE Specifies whether the physical circuit supports General Access to X.25 Transport Extended (GATE), or Dedicated Access to X.25 Transport Extended (DATE). Default: NO Range: NO, DEDICAT GENERAL SUBADDR Specifies whether the incoming call packets use subaddressing to select LLC types. Code SUBADDR=YES to select subaddressing. If YES is coded, you must also specify the subaddresses by coding the LLC3 keyword, explained below. Code SUBADDR=NO for no subaddressing. Specifies that subaddressing is not used. Default: NO Range: YES, NO LLC3 Specifies the value of the subaddress field of the Incoming Call packets for SNA peripheral nodes communicating with the BNN QLLC protocol. This keyword must be coded if SUBADDR=YES. Range: 0-9 ISTATUS Specifies whether the NPSI physical circuit, LU, and PU will automatically activate when the NCP is activated. Default: None Range: ACTIVE, INACTIVE ITRACE Specifies whether the Link Access Protocol (LAP) internal trace facility is to be performed on this physical circuit. Default: YES Range: YES, NO LCN0 Specifies whether logical channel 0 of logical group 0 is used to designate a virtual circuit. If you specify USED (the default), LCN=0 must be coded in a subsequent X25.LINE or X25.VC statement. Default: USED Range: USED, NOTUSED LLCLIST Specifies the types of SVCs that are supported. LLCLIST must be coded if SVCs are to be configured on this physical circuit. LLCLIST can be coded with multiple values separated by commas, as in LLCLIST=(LLC0,LLC3,LLC4). The value LLC3 signifies that multiple SVCs can connect to an SNA peripheral node using the QLLC protocol. Default: None Range: LLC0, LLC2, LLC3, LLC4, LLC5 NCPGRP Specifies the label of the NCP GROUP statement that includes this physical circuit. Omitting this keyword, or specifying NEW causes a label to be created by X.25 NPSI. If you specify a label, an NCP GROUP statement is generated with a name matching the label. Default: NEW Range: label, NEW NDRETRY Specifies how many times the NP/TP sequence is executed. Default: 1 Range: 1-3 NPRETRY Specifies the number of transmissions of an I or U frame in a TP time out recovery. Default: 7 Range: 3-31 OWNER Specifies the value of the OWNER parameter on the NCP LINE statement generated by this X25.MCH statement. PAD Specifies how PAD-supported terminals are attached. Default: NO Range: INTEG, TRANSP, NO PKTMODL Specifies the packet protocol modulo. You must specify a value higher than the VWINDOW values coded for the X25.VCCPT statements associated with this MCH. Default: 8 Range: 8, 128 PUNAME Specifies the PU name associated with this physical circuit. PWPROT Specifies whether the physical circuit supports password protection for its associated virtual circuits. Default: NO Range: YES, NO SPAN Specifies restricted access to this MCH for NetView operators. Refer to the appropriate NetView documentation for more information. SPEED Specifies the physical circuit's data rate in bits per second. Default: 9600 SPNQLLC Specifies whether an SDLC PAD is used to connect this physical circuit. Default: NO Range: YES, NO STATION Specifies whether the MCH operates as a DTE or a DCE. The value DTE must be used to support a normal connection to a network node. Default: DTE Range: DCE, DTE STATOPT This keyword is used by Netview. Refer to the appropriate NetView documentation for more information. T1TIMER Specifies how many seconds the DCE waits for frame acknowledgment. Note that the value of 0 does not allow for link-level piggybacking. Can be specified in tenths of a second. Default: 0 TDTIMER Specifies the value of the X.25 NPSI internal delay timer between ND transmissions. Default: 1 Range: 1, 2, 3 TPTIMER Specifies the value of the X.25 T1 timer. This timer determines the maximum delay during which the DTE expects the acknowledgment of a transmitted I or U frame with or without the poll bit set, or of a transmitted S frame with the poll bit set. Default: 1.0 second Range: 0.5-25.5 seconds (in .1 second increments) VMODTAB Specifies the name of the mode table for the virtual circuit LUs defined in the X25.FCG statements that correspond to this X25.MCH statement. X25.LCG. LCGN Specifies the logical group number for all virtual circuits specified by subsequent X25.VC or X25.LINE statements. Code in decimal, in ascending order. Default: None Range: 0-15