3com 5500-SI Manual De Usuario
17
N
ETWORK
P
ROTOCOL
O
PERATION
This chapter covers the following topics:
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IP Address
Configuration
Configuration
This section contains IP Address Configuration information.
IP Address Overview
IP Address Classification and Indications
An IP address is a 32-bit address allocated to the devices which access the Internet. It
consists of two fields: net-id field and host-id field. There are five types of IP address.
See Figure 61.
consists of two fields: net-id field and host-id field. There are five types of IP address.
See Figure 61.
Figure 61 Five Classes of IP Address
Class A, Class B and Class C are unicast addresses, while Class D addresses are
multicast addresses and Class E addresses are reserved for special applications. The
first three types are commonly used.
multicast addresses and Class E addresses are reserved for special applications. The
first three types are commonly used.
The IP address is in dotted decimal format. Each IP address contains 4 integers in
dotted decimal notation. Each integer corresponds to one byte, for example,
10.110.50.101.
dotted decimal notation. Each integer corresponds to one byte, for example,
10.110.50.101.
0
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
0
1 0
1 1 0
1 1 1 0
1 1 1 1 0
net-id
net-id
net-id
Multicast address
Reserved address
host-id
host-id
host-id
Class A
Class B
Class C
Class D
Class E