Promax MO-180 Manual De Usuario página 111

USER'S MANUAL MO-180
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-180 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-180 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.
-
BOOTP (Bootstrap Protocol) is an UDP network protocol used by network
clients to automatically obtain an IP address. This process is typically carried
out as part of the boot-up sequence of a network device. This protocol enables
dummy terminals with no hard disk to obtain and IP address before starting to
load an advanced operating system.
-
AutoIP or ZeroConfing is a set of techniques that automatically create a
usable IP address with no need for configuring special servers. Traditional
class B networks use the 169.254.x.y set of addresses for this purpose. It is
not advised to use this method because the so-generated address might not
be visible to the other devices connected to the network.
In static IP address assignment the user can set the 4-byte IP address of the
MO-180 using the menu entries located under the CONFIGURATION menu. Once
changed, this will be the IP address assigned to the modulator until it is modified again
by the user.
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