SNAX/APN Application Programming Manual

Introduction to SNAX/APN High-Level APIs
SNAX/APN Application Programming Manual—420111-001
1-9
Tandem PLU Accept
a positive response from the device, the application can communicate directly with the
device by issuing other procedure calls.
When ELF is used with SNAX/APN End Node, the TLOGMGR and ILOGMGR do not
exist. The device’s owning VTAM sends a Locate CDINIT to the network. The ELF
component of SNAX/APN End Node determines that it owns the target LU and ELF
uses a template LU to create a remote LU representing the requesting device. ELF then
converts the CDINIT into a CINIT and sends that to the SNAX Creator-2 process. The
application that is subsequently created issues an OPEN procedure call to the remote LU
created by ELF. A subsequent data-transfer operation (a WRITE, READ, or
WRITEREAD procedure call) causes SNAX/APN to send a BIND request to the device.
If the BIND request produces a positive response from the device, the application can
communicate directly with the device by issuing other procedure calls.
Both the ILOGMGR and the SNAX Creator-2 process require additional configuration.
For information about the
Tandem Logon Manager for IBM Systems (ILOGMGR), see the
Tandem Logon Manager for IBM Systems (ILOGMGR) Manual. For information about the
SNAX Creator-2 Process/Subsystem, see the SNAX Creator-2 Configuration and Control
Manual.
Figure 1-4. Tandem PLU Accept
104CDT .CDD
NCP
Application
SNAX
Creator-2
SNAX/APN
Tandem Nonstop System
(Type 2.1 Node)
ILOGMGR
VTAM
IBM System
(Type 2.1 Node)
Link-Attached
Devices
TLOGMGR
Note: TLOGMGR
and ILOGMGR are
not needed when ELF
is used