13 TCP/IP Description
13 TCP/IP Description
TCP/IP is the protocol used on the Internet, and in local networks as well. This opens access to
any device connected somewhere to the Internet. But a simple contact like plugging in a cable is
not enough. The network has to be configured. Your network administrator is responsible to do
that. If any question during configuration, ask him. Configuration means to set certain parameters
in any device and computer.
Since IP-configuration is a frequent source of problems, a little bit of theory is provided here.
13.1 Recommended Settings
Basically every device on the LAN has a so-called IP Address.
In typical small networks the
IP Address is similar to 192.168.X.Y, and there is a corresponding netmask of 255.255.255.0. The
X ranges from 0 to 255, while Y is from 1 to 254. The combination of X.Y must be unique in your
LAN, i.e. two stations must not have the same configuration.
13.1.1 Static Configuration
All stations on the network have a fixed IP Address. In small networks this is typically of the
192.168-type. To configure NetCom
+
for your LAN, it must have the same 192.168.X as your
computer, and the same netmask. So it needs a unique Y to establish communication.
13.1.2 DHCP Configuration
Another typical configuration is the automatic configuration. This requires a dedicated server in
the LAN, which serves as a so-called DHCP server. Every device can send a request, the reply is
a special configuration for this device on the network. The NetCom
+
Devices support DHCP by
default, so just use or activate it.
For best operation the DHCP server itself should be configured. It may identify the NetCom
+
Device by its MAC- or Ethernet-Address. There should be an internal database, to always provide
the same IP Address to stations with a given MAC. There are free DHCP server programs available
10
for Windows Operating Systems.
If the DHCP server can not be configured to provide a reserved IP Address to the NetCom
+
, it may
happen the NetCom
+
will receive a changed address after some time. This will make the driver for
this NetCom
+
inoperative. Use the NetCom Manager to adjust the configuration of the driver.
10
DHCP Server for Windows
,
TFTPD32
September 2016
NetCom Plus User Manual
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