Extron electronic DVS 510 SA manual IP Addressing, What is an IP Address?, Choosing IP Addresses

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 (each in the range of 0 to 255) separated by dots, such as 198.123.34.240. This is called “dotted decimal notation.”

An IP address is divided into two parts:

•Network identifier

•Host identifier

Each address on a given network must have the same network identifier value but a unique host identifier. As a result, there are different classes of addresses that define the range of valid addresses and which parts of the address are used for the network and host identifiers. The table below shows the most common IP address classes. In this table, NNN refers to the network identifier and HHH refers to the host identifier.

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

Choosing IP Addresses

If the computer and the DVS are directly connected or connected via their own independent network, follow the guidelines below to choose the IP addresses.

However, if you intend to connect your computer and scaler to an existing network, you need to ask the network 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:

•The network identifier must be the same for each IP address.

•The host identifier must be unique for each address.

By these rules, the first three decimal values of your class C IP address must all be the same, while the last value is identifies each device.

The following is an example of a valid Class C addressing scheme:

Device

IP Address

SPPCP Control Software Computer	208.132.180.41
DVS 510	208.132.180.42

NOTE: The host identifiers (41 and 42 in the example above) do not need to be

sequential or in any particular order. However, it is recommended that you group

the numbers for simplicity.

DVS 510 Series • Reference Information 116