ALSREQ start option


   .-ALSREQ--=--NO------.   
>>-+--------------------+--------------------------------------><
   '-ALSREQ--=--+-YES-+-'   
                '-NO--'

Specifies whether adjacent link station names (or an appropriate matching name) must appear in the default adjacent link station list of the independent LU at a session request.

If adjacent link station names are required, only session requests over a matching adjacent link station in the list are allowed. For a LEN adjacent link station, this means the names must match. For an APPN adjacent link station, it means that another APPN adjacent link station (real or ISTAPNPU) is found in the list. If adjacent link station names are not required, any adjacent link station can receive a session request for this LU. Furthermore, the link station name is added to the list if it is LEN, or ISTAPNPU is added to the list if it is APPN.

You can change the value of ALSREQ with the MODIFY VTAMOPTS command while VTAM® is running.

The value you specify on the ALSREQ start option provides the default for the ALSREQ operand on the CDRSC definition statement if you do not specify it.

ALSREQ=NO: Specifies that an adjacent link station name need not match an entry in the default link station list of the independent LU.
ALSREQ=YES: Specifies that an adjacent link station name must match an entry in the default link station list of the independent LU.