Chapter 1 Ip Addressing Configuration; Ip Addressing Overview; Ip Address Classes - H3C S9500 Series Operation Manual

Operation Manual – IP Addressing
H3C S9500 Series Routing Switches

Chapter 1 IP Addressing Configuration

When assigning IP addresses to interfaces on your device, go to these sections for
information you are interested in:

IP Addressing Overview

Configuring IP Addresses
Configuring IP Unnumbered
Displaying IP Addressing Configuration
1.1 IP Addressing Overview
This section covers these topics:

IP Address Classes

Special Case IP Addresses
Subnetting and Masking
IP Unnumbered
1.1.1 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:
Net-id: First several bits of the IP address defining a network, also known as class
bits.
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).
Chapter 1 IP Addressing Configuration
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