Network; Ip Address Configuration; Ip Address Overview - 3Com 5500-SI Configuration Manual

17
IP Address
Configuration

IP Address Overview

N
ETWORK
This chapter covers the following topics:

IP Address Configuration

■
ARP Configuration
■
Resilient ARP Configuration
■
BOOTP Client Configuration
■
DHCP Configuration
■
Access Management Configuration
■
UDP Helper Configuration
■
IP Performance Configuration
■
This section contains IP Address Configuration information.
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.
Figure 61 Five Classes of IP Address
0 1 2 3 4 5 6 7
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.
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.
P
ROTOCOL
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