gtps4m32System Generation

NETWK

The NETWK macro provides the facility for specifying the number of transmission control units (TCU), terminal interchanges (TI), and other communication variables. The EP communications controller native subchannel address table and symbolic control unit table are also processed. The number of TCUs defined here must agree with the number defined in during non-SNA communications generation. See Non-SNA Communications.

The NETWK macro is not required if no lines are specified on the LINES macro and the default values for the NETWK parameters are acceptable.

The NETWK macro is only to be coded when generating a base only system or when generating the basic subsystem in a multiple database function (MDBF) environment.

The number of control units will be defined according to the number of subchannels. The control unit addresses will be in ascending order beginning with '00.'

Format




Notes:

  1. Required only if 3705s are used.

  2. Up to 8 values can be coded on SUBCH.

N2703=0|n
Number of active EP TCUs that the system can recognize. Up to eight TCUs may be entered. This parameter must be coded as nonzero (or the D3270 parameter must be coded as YES) if lines are coded on the LINES macro.

NPATH=1|2|3|4
Number of physical paths (primary and alternate) through which a symbolic line may be attached to the system. The maximum number is 4 (limited by system software).

L70MAXO=6680|n
This parameter defines the size of the largest output message that can be sent to a 3270 local device. The value is numeric, and must be greater than 0. Default is 6680 (20 381-byte blocks). Maximum is 6680.
Note:
L70MAXO is used to compute the maximum number of message blocks per message. However, more message blocks may be required by the mapping user. Therefore, when using 3270 mapping, it is recommended that L70MAXO be set to its largest allowable values (that is, L70MAXO=6680).

NUAT=2|n
The number of unique LNIATA's requiring an entry in the AAA initialization table (UAT). This value will be used to create the WGTA table and WGTA hash table. This value should reflect the user's future requirements for UAT expansion. The minimum value that can be coded is two times the number of processors defined in the CONFIG macro.
Note:
If an automation gateway is connected to the system, additional UAT entries must be specified. The additional number of entries is the number of terminal addresses in the range 010003 to 0100mm, where mm is the maximum terminal address specified in your IBM Extended Operations Console Facility/2 configuration. (For additional information on the maximum terminal address, see the IBM Extended Operations Console Facility/2 System Administrator's Guide.)

WGTIME=15|n
Specifies the time for controlling the frequency of keypointing the WGTA tables. The time specified is in minutes increments with the minimum time that can be specified being one minute and the maximum being 30 minutes.
Note:
A RAMFIL statement for record type #WGTRI is required. (See the RAMFIL description.) The number of records to be allocated is as follows:
Number of #WGTRI records = (( n x 28 + 4059) / 4060 ) + 1

where n = value specified for NUAT.

M3270=768|n
Maximum 3270 message length, including all control characters. (The maximum is 4KB, although it is not recommended to specify more than 3600.)
Note:
The following parameters are for EP support only.

SUBCH=(sc-ad)
Up to eight hexadecimal subchannel addresses (01-FF) to define the EP communication controller native subchannel address table. In addition, their associated channel adapter types must be defined by:

There is a unique subchannel address for each EP communication controller. For example to define subchannel 01F having an adapter type 1 code as follows SUBCH=(1F-1).

Note:
The number of addresses in the SUBCH parameter governs the number of EP communication controllers on the system. The total number of entries in SUBCH must not be greater than N2703.

MAXEP=n
Maximum number of EP load modules retained on file (1-52). For more information about EP load modules, see the EP for 3705 Generation and Utilities Guide.

MAXDP=0|n
Maximum number of EP dumps retained on file (1-99). This defines the number of EP dumps that will be maintained on TPF files before purging to tape.

DIAG
Specify one of the following:

Y6
16 bit or basic addressing for this CU. Maximum of 48K of storage installed.

Y8
18 bit or extended addressing for this CU. More than 48K of storage installed.

NO
No diagnostic will be included for this system. Up to eight diagnostic specifications to define the diagnostic available for each subchannel may be specified. DIAG parameters must be specified in the same order as the associated subchannel. If the diagnostic parameter is omitted all subchannels will default to NO. If DIAG is coded for selected subchannels the rest will default to Y6. If DIAG=NO is coded all subchannels will default to NO. If Y6 or Y8 is coded for any subchannel NO cannot be coded in the same diagnostic parameter. NO is a system default, therefore, cannot be specified for each channel.

D3270=NO|YES
Specifies whether 3270 local lines are defined.

Examples

None.

References

None.