poolname=(baseno,bufsize,slowpt,F,xpanno,xpanpt,xpanlim)

For a description of these operands, see the z/OS Communications Server: SNA Resource Definition Reference.

The first four operands of the start option (baseno, bufsize, slowpt, and F) establish the base size and the characteristics of the buffer pool. The last three operands (xpanno, xpanpt, and xpanlim) specify how dynamic expansion of the buffer pools is to be performed.

Set basic allocation for each buffer pool when VTAM® is started. If you do not specify a start option parameter for a buffer pool, VTAM uses an IBM-supplied value for the missing parameter. The IBM-supplied values are not necessarily the most efficient values for your system, and they are not necessarily compatible with any dynamic allocation specifications you might make.