USER'S MANUAL. MO-16X
4.12
Remote control via Ethernet (MO-162 / MO-163 Only)
4.12.1 Assigning an IP address
The MO-16X has an Ethernet RJ-45 socket, which enables the connection of the
modulator to an IP network. The network interface installed in the modulator requires an
IP address whose value lie within the range of values assigned to the IP network or
sub-network we are using.
Here follows a brief explanation of how to assign IP addresses in an IP network.
This is by no means a comprehensive description of how to set up an IP network. There
are excellent books and on-line resources providing an in-depth coverage of the
subject.
There are basically two ways of obtaining an IP address for a network client:
-
Static. The network client uses the same address every time it connects to
the network. A network administrator decides which address is used by
each device connected to the network.
-
Dynamic. A new IP address is assigned every time the equipment is
connected to the network. The assignment is usually done by an external IP
address server.
Communication with the MO-16X via an IP network is based on establishing a
"virtual" serial connection using the IP network simply as the physical carrier of the
serial control commands we use to remotely interact with the modulator. In principle this
virtual serial port requires us to specify an static IP address which stays always the
same.
Nonetheless, dynamic address assignment is a very useful technique which
allows to add new devices to an existing IP network with minimal or no manual
configuration at all.
The network client in the MO-16X supports different dynamic IP assignment
protocols:
-
DHCP (Dynamic Host Configuration Protocol), which is a server/client
network protocol that allows IP network devices to automatically configure
their network parameters. A DHCP server holds a list of valid IP addresses
and assigns them to network clients as needed. When a client is
disconnected its address is automatically released and becomes available
for any new client logging on to the network.
04/2008
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