H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – IP Address-IP Performance-IPX
H3C S7500 Series Ethernet Switches Chapter 1
IP Address Configuration
1-1
Chapter 1 IP Address Configuration
When configuring IP address, go to these sections for information you are interested in:
z IP Address Overview
z Configuring IP Address(es) for a VLAN Interface
z Displaying and Maintaining IP Address Configuration
z IP Address Configuration Example
z Troubleshooting IP Address Configuration
1.1 IP Address Overview
1.1.1 IP Address Classification and Representation
An IP address is a 32-bit address allocated to a device connected to the Internet. It
consists of two fields: net-id and host-id. To facilitate IP address management, IP
addresses are divided into five classes, as shown in
Figure 1-1.
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
Multicas t address
Reserved address
host-id
host-id
Class A
Class B
Class C
Class D
Class E
n et-i d: Netwo rk ID; h os t-i d: Host ID
host-id
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
Multicas t address
Reserved address
host-id
host-id
Class A
Class B
Class C
Class D
Class E
n et-i d: Netwo rk ID; h os t-i d: Host ID
host-id
s Figure 1-1 Five classes of IP addresse
Class A, Class B, and Class C IP addresses are unicast addresses. Class D IP
addresses are multicast addresses and Class E addresses are reserved for future
special use. The first three types are commonly used.
IP addresses are in the dotted decimal notation. Each IP address contains four decimal
integers (separated from each other using “.”), with each integer corresponding to one
byte (for example, 10.110.50.101).