Network Protocol Operation; Ip Address Configuration; Ip Address Overview - 3Com Switch 4500 26-Port Configuration Manual

5
IP Address
Configuration

IP Address Overview

N
ETWORK
This chapter covers the following topics:

IP Address Configuration

■
ARP Configuration
■
DHCP Configuration
■
Access Management Configuration
■
UDP Helper Configuration
■
IP Performance Configuration
■
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 21.
Figure 21 Five Classes of IP Address
0 1 2 3 4 5 6
Class A
net-id
0
Class B
net-id
1 0
Class C
1 1 0
Class D
1 1 1 0
Class E
1 1 1 1 0
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.
P
ROTOCOL
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
host-id
net-id
Multicast address
Reserved address
O
PERATION
host-id
host-id