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DXP DVI Pro and DXP HDMI Series • Reference Information 127127
IP Addressing
What is an IP Address?
An IP address is a 32-bit binary number that is used to identify each device on an Ethernet
network. This number is usually represented by four decimal numbers (called “octets”),
each in the range of 0 through 255 and separated by dots; for example, 198.123.34.240.
This is called “dotted decimal notation.”
An IP address is divided into two parts:
• Network identifier
• Host identier
Each address on a given network must have the same network identier value but have a
unique host identifier. As a result, there are different classes of addresses that define the
range of valid addresses and the parts of the address that are used for the network and
host identifiers.
The most common IP address classes are:
Class Name Valid Address Range Identifier Arrangement
Class A 0.0.0.1 to 127.255.255.254
NNN.HHH.HHH.HHH
Class B 128.0.0.1 to 191.255.255.254
NNN.NNN.HHH.HHH
Class C 192.0.0.1 to 223.255.255.254
NNN.NNN.NNN.HHH
NNN
refers to the network identifier and HHH refers to the host identifier.
Choosing IP Addresses
If the computer and the DXP are directly connected or connected via their own
independent network, follow the guidelines below for choosing the IP addresses.
However, if you intend to connect your computer and switcher to an existing network, you
need to advise the network administrator and ask the administrator to allocate suitable IP
addresses.
On an independent network, it is generally recommended that you use the Class C format
(from 192.0.0.1 to 223.255.255.254).
There are two rules for choosing IP addresses:
• Network identifier must be the same for each IP address
• Host identier must be unique for each address.
Applying these rules to Class C addresses, the first three decimal values of your IP address
must all be the same while the last value is used to uniquely identify each device.
The following is an example of a valid Class C addressing scheme:
Device IP Address
Matrix Switcher Control Software computer 208.132.180.41
DXP DVI Pro switcher 208.132.180.42
NOTE: The host identifiers (41, 42, and 43 in the above example) do not need to be
sequential or in any particular order. However, it is recommended that you
group the numbers for simplicity.