Moxa Technologies NPort, Руководство пользователя

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NPort Server User’s Manual 2-4
Multi-Host Type
For advanced application, you may share NPort Server to multiple hosts on server
base or port base at your Local Area Network. Unlike the serial devices bundled to
dedicated host, sharing of the server saves resource from adding multiport serial
boards to all computers and provides flexibility and easy maintenance. Figure 2-3
shows the basic concept of multi-host type. To share the server - if you have three
hosts on the network and each host required 5 ports to communicate with five serial
devices, you can install one 16 port NPort Server and share 5 ports to each host. To
share ports – for application like modem pool, or other RS-232 device pooling, you
can set the ports to allow multiple hosts to connect to the port at different time to
reach the needs for sharing devices connectivity to the port.
Figure 2-3. Three-Host sharing NPort Servers
If your application of NPort Server is under Multi-Host, you need to know about basic
concepts of Networking – IP address assigning. There are two roles playing inside
this application platform – the administrator and general users. Administrator has to
give the NPort Server a dedicated IP address, so the other Windows NT hosts (general
users) on the network can find the NPort Server that you are taking care of.
Administrator also takes care that who has the rights to access to which ports. For
general users, all they need to do is installing the driver and software, add the NPort
Server and run their application. These procedures protect the NPort Server from any
insecure person hacking into the server and maintain the NPort Server a clean, simple
device for serial communication.
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Note: Multi-Host is defined to be at local usage only.
NPort
Server
NPort
Server
NT NT NT
TCP/IP