SNAX/XF and SNAX/APN Configuration and Management Manual

Session Establishment
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
A-6
SNAX/APN APPC
SNAX/APN APPC
For SNAX/APN APPC, whichever LU sends the BIND request is the primary LU. Unlike
SNAX/XF, there is no correlation with whether the line is primary or secondary.
LU Acquire
The sequence of events is shown in Figure A-8. A SNAX/APC ALLOCATE verb has
the same result when no session is available.
LU Accept
The sequence of events is shown in Figure A-9.
Figure A-8. SNAX/APN APPC: LU Acquire
Figure A-9. SNAX/APN APPC: LU Accept
SNAX/APN
SNAX/APC
Application
BIND request
Remote LUSNAX/APC
(Local LU object)
OPEN
WRITE/WRITEREAD containing
an ACTIVATE-SESSION verb
WRITE/WRITEREAD containing
a BIND request
(Remote LU object)
(Local LU object)
VSTA08.vsd
SNAX/APN
BIND request
Remote LU
SNAX/APC
(Local LU object)
OPEN
(Local LU object)
READ/WRITEREAD
(Remote LU object/
Local LU object)
SNAX/APC
Application
VSTA09.vsd