SNAX/XF and SNAX/APN Configuration and Management Manual

SNAX Quickstart and Overview
SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
1-11
SNAX/APN Connectivity
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The NonStop node can communicate with SNA host nodes and SNA peripheral
nodes (SNA type 2 or 2.1 nodes) in an attached SNA subarea network.
One form of this connectivity is called the extended logon facility (XLF). To forward
logon requests from the SNA subarea network to the NonStop system, the
NonStop Logon Manager for IBM Systems (ILOGMGR) must be installed in an
SNA host in the subarea network.
A second form of this connectivity is called the enhanced logon facility (ELF). ELF
can be used only with SNAX/APN End Node; it cannot be used with a LEN Node.
To forward logon requests from the SNA subarea network to the NonStop system,
SNAX/APN End Node’s Network Node Server must be either a VTAM or an
Extended Border Node and it must support IBM Session Services Extension
(SSE).
With either XLF or ELF, applications on the NonStop system can use the CRT, ITI,
SNALU, or SNAX/HLS APIs.
Figure 1-4 on page 1-12 shows SNAX/APN connectivity. For simplicity, the SNAX
service manager processes, SWAN concentrator, and SNA communication controllers
are omitted. Also, the processes shown here in a single NonStop system can be
distributed across an Expand network.