Eicon Networks CX1 Manual de instalación descargar pdf (Pagina 24)

G&R

• Increased speed since the unneeded level of protocol translation is by-

passed

• Simpler DNS and/or mainframe configuration, as it’s likely that DSA

session is already configured whereas DIWS is not

• The DIWS protocol mode can still be used if you have historic reasons to

do so. It implements DSA presentation over OSI session, interfacing to the

OSI transport stack according to the Bull DSA/ISO workstation

specification. There are no known technical reasons to use DIWS in new

installations

DSA/DIWS on Windows servers

Due to limitations in the multitasking capabilities of Windows servers the

DSA/DIWS line handler has been implemented slightly differently than the

UNIX/Linux counterpart. On UNIX/Linux, when you specify -li dsa or

-li diws for a Host Links application, a new line handler process

gl_dsa is launched. Windows servers cannot multitask multiple processes

efficiently, and so need to handle multitasking by using threads within a single

process. The Windows server version of Host Links uses a line module

server, to deal with this. The line module server is a program with the same

name as the listener products on UNIX/Linux, i.e. nl_dsa. When you specify

-li dsa or -li diws for a Host Links product running on a Windows

server, it contacts the appropriate line module server. The line module server

creates a new thread to handle the session.

As a result of this, the nl_dsa line module server must be started before any

Host Links product that uses the DSA/DIWS line handler. Like all the other

Host Links servers on Windows, the line module server must be launched

as a Windows service. Do this by adding the command line to the beginning of

the Gservice configuration file:

nl_dsa.exe

Gline Line Handlers and Configuration

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Eicon Networks CX1 Manual de instalación Pagina 24