Multiple-domain network

For TSO sessions to be established in a multiple-domain network, you must code CDRSC definition statements for each TSO/VTAM application program unless you specify SSCPDYN=YES. Code the CDRSC definition statements in every VTAM® host owning logical units that will log on to the application program.

In the VTAM host containing the TSO subsystem, it is not necessary to define the LUs in the other domains that issue logons to TSO/VTAM if dynamic CDRSC definition is authorized. Also, the manager in the domain of the SLU can be authorized to create CDRSCs for the TSO application program associated with the TSO user.

Code the following CDRM definition statements in each domain to avoid defining both the SLUs that log on to TSO/VTAM as CDRSCs in the TSO/VTAM domain and the TSO user application programs as CDRSCs in the SLU domain.

name1    CDRM  CDRDYN=YES,CDRSC=OPT,...
 
name2    CDRM  CDRDYN=YES,CDRSC=OPT,...

The CDRDYN operand determines whether a CDRM is authorized to dynamically create a CDRSC representing a cross-domain LU when a logon request is received from the LU (through an Initiate from the CDRM managing the LU).

The CDRSC operand determines whether the dynamic creation of CDRSC definitions is permissible when a logon request is received from the CDRSC manager identified by this CDRM definition statement.

In a multiple-domain network where TSO/VTAM is run in more than one domain, you must have special definition statements with unique names for TCAS and the terminals in your domain and interacting domains. Code the following APPL definition statement for TCAS in your domain:

tsoa     APPL  ACBNAME=TSO,PRTCT=password,
               AUTH=(NOACQ,PASS,NVPACE,
               TSO,NOPO),EAS=1

The label tsoa is a unique network name. This name can be up to eight characters in length, but should be kept to less than eight so that it can be a prefix for the names on the subordinate TSO APPL definition statements.

Code as many APPL definition statements in the following format as the maximum number of sessions that will be established with TSO/VTAM in your domain at one time:

tsoannnn APPL  ACBNAME=TSOnnnn,PRTCT=password,
               AUTH=(NOACQ,PASS,NVPACE,
               TSO,NOPO),EAS=1

The label tsoannnn is a unique network name, which can be up to eight characters in length. It can be helpful to use the network name for TCAS as a prefix in the network name when coding APPL definition statements for each terminal logged on to the TSO/VTAM in this VTAM host concurrently. For the nnnn suffix, use sequential decimal integers starting with 0001. For the ACBNAME, the nnnn suffix is a decimal integer; the numbering must start with 0001 and be sequential.

Code the following definition statement for each TCAS in another domain with which an LU in your domain communicates:

tsob     CDRSC  CDRM=name of VTAM manager for tsob

If a dynamic cross-domain resource definition is not authorized, code the following CDRSC definition statement in each domain that contains an SLU that can communicate with your domain, and code a CDRSC definition statement in the domain of TSO/VTAM for each cross-domain SLU that can log on to TSO/VTAM:

tsobnnnn CDRSC  CDRM=name of VTAM manager for tsobnnnn

tsob identifies the owning CDRM for each domain and must be included on each TCAS and CDRSC definition statement. The nnnn suffix is a decimal integer; the numbering must start with 0001 and be sequential.