The BNA command initiates and terminates the portion of BNA Version 2 that provides for Program Agent access, and handling of a subset of BNA Version 2 commands. After you issue a BNA + command, BNA is considered to be in isolated mode. When BNA  terminates, its state is considered to be not running. To provide full BNA capabilities, you must issue the NW NET + command. For complete information on the NET command, refer to the Networking Commands and Inquiries Help.

Syntax

Explanation

BNA

Indicates whether BNA  is available.

BNA −

Moves BNA Version 2 to a not running state from the mode it was in previously.

BNA +

Moves BNA  Version 2 from a not running state to isolated mode.

Examples

Example 1

BNA

   BNA IS AVAILABLE
   NEXT INIT/INFO FILE WILL BE *BNAV2/INIT/TRPROGD/TCPIP

Example 2

BNA +

   BNA will be initiated

Example 3

BNA -

   BNA shutting down

The message BNAV2 IS UNAVAILABLE appears only after BNA shuts down. This process might be lengthy.

Considerations for Use

The SL (Support Library) command specifies the file title of the required libraries for BNA  Version 2. These libraries are

Before you can use Heritage Host Services, you must specify the DSSSUPPORT library with an SL command. However, the DSSSUPPORT library is not a required library. You must also specify the PASCALSUPPORT library before BNA Version 2 can be initialized.

For information about BNA Version 2 reinitialization after a halt/load, refer to the description of option 40 in the OP (Options) command.