Lantronix Device Server UDS 10 Uživatelský manuál stáhnout pdf (Strana 119)

Binary to Hex

UDS-10 User Guide 10-1

10. IP Addresses

An IP address is a 32-bit value, divided into four octets of eight bits each. The standard

representation is four decimal numbers (in the range of 0..255) divided by dots.

192.2.1.123

This is called decimal-dot notation.

The IP address is divided in two parts: network and host. To support different needs, three

network classes have been defined. Depending on the network class, the last one, two or three

bytes define the host, while the remaining part defines the network. In the following

explanations, x stands for the host part of the IP address:

10.1 Class A Network

IP address 1.x.x.x to 127.x.x.x

Only 127 different networks of this class exist. These have a very large number of potential

connected devices (up to 16,777,216).

Example: 10.0.0.1, (network 10, host 0.0.1)

10.2 Class B Network

IP address 128.0.x.x to 191.255.xxx.xxx

These networks are used for large company networks. Every network can consist of up to

65,534 devices.

Example: 172.1.3.2 (network 172.1, host 3.2)

10.3 Class C Network

IP address 192.0.0.xxx to 223.255.255.xxx

These network addresses are most common and are often used in small companies. These

networks can consist of a maximum number of 254 hosts.

Example: 192.7.1.9 (network 192.7.1, host 9)

The remaining addresses 224.x.x.x - 239.x.x.x are defined as ”class D” and are used as

multicast addresses.

The addresses 240.x.x.x. - 254.x.x.x are defined as class E and are reserved addresses.

1 2 ... 114 115 116 117 118 119 120 121 122 123 124 ... 138 139

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Lantronix Device Server UDS 10 Uživatelský manuál Strana 119