SNAX/XF and SNAX/APN Configuration and Management Manual

Session Establishment
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
A-4
SNAX/XF Secondary Lines
SNAX/XF Secondary Lines
For SNAX/XF secondary lines, the SNA host LU is always the primary LU. The
application protocol is always SNALU (the application may use SNALU, SNAX/HLS or
SNAX/APC as the API).
LU Acquire
The sequence of events is shown in Figure A-4.
LU Accept
The SNA host LU sends a BIND request to a SNAX/XF gateway LU, as shown in
Figure A-5. For example, a VTAM operator can issue a VARY NET, ACT command for
the SNAX/XF gateway line, PU, or LU specifying LOGON=application name. This
triggers a CINIT request to the SNA host application.
Figure A-4. SNAX/XF Secondary Line: LU Acquire
Figure A-5. SNAX/XF Secondary Line: LU Accept
SNAX/XF
SNALU
Application
OPEN
BIND request
(Gateway LU Object)
VTAM-recognized logon or INIT-SELF request
VTAM
(Gateway LU Object)
SNA Host
Application
CINIT request
VSTA04.vsd
SNAX/XF
SNALU
Application
BIND request
VTAM
(Gateway LU Object)
SNA Host
Application
CINIT request
(for example)
VSTA05.vsd