CONFIG start option

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   .-CONFIG--=--00------------.   
>>-+--------------------------+--------------------------------><
   '-CONFIG--=--+-file_id---+-'   
                '-file_name-'     

Contains a list of definition members in the VTAM® definition library that are to be activated when VTAM is started. For more information on configuration lists, seez/OS Communications Server: SNA Network Implementation Guide.
CONFIG=00
Files a user-defined configuration list under the name ATCCON00.

VTAM always uses this predefined list unless a system operator uses the CONFIG option to select another list, or another list of start options specifies a different CONFIG start option. If a default configuration list does not exist when VTAM is started, an error message is sent to the system or domain operator. VTAM initialization continues without the configuration list.

Note: The configuration list named by CONFIG replaces the default configuration list. This differs from start option list processing where LIST, if coded, is merged with the 00 list.
CONFIG=file_id
Provides 1–2 alphanumeric characters that specify the file (or member) in the VTAM definition library that contains a list of major nodes that are activated when VTAM is started.

File the list of major nodes under the name ATCCONxx.

CONFIG=file_name
The 3–8 character file name of the configuration restart VSAM file. The file name must have been coded in the NODELST option during VTAM's execution prior to the failure or termination of VTAM.

This file contains a list of the major nodes that were active and a list of the dynamic reconfiguration data set (DRDS) files and sets of PATH statements that were in effect at the time of failure or termination of VTAM.

Include a DD statement using this data definition name in the VTAM start procedure.