10 ip addressing configuration, Ip addressing overview, Ip address classes – H3C Technologies H3C WX6000 Series Access Controllers User Manual
Page 88: Ip addressing configuration
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IP Addressing Configuration
When assigning IP addresses to interfaces on your device, go to these sections for information you are
interested in:
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Displaying and Maintaining IP Addressing
The term switch in this document refers to a switch in a generic sense or an access controller
configured with the switching function unless otherwise specified.
IP Addressing Overview
This section covers these topics:
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IP Address Classes
IP addressing uses a 32-bit address to identify each host on a network. An example is
01010000100000001000000010000000 in binary. To make IP addresses in 32-bit form easier to read,
they are written in dotted decimal notation, each being four octets in length, for example, 10.1.1.1 for the
address just mentioned.
Each IP address breaks down into two parts:
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Net-id: First several bits of the IP address defining a network, also known as class bits.
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Host-id: Identifies a host on a network.
For administration sake, IP addresses are divided into five classes. Which class an IP address belongs
to depends on the first one to four bits of the net-id, as shown in the following figure (in which the blue
parts represent the address class).