Huawei DR814Q - Manual (Page 100)

User Manual
Aolynk DR814Q ADSL2+ Broadband Router
9 Appendix - IP Address and Subnet Mask
95
s the network ID and the rest is the host Dither
length network I ds on th f the net er to se .2
“Classe Addresses”). escri cture of the IP addre
T re of the IP address
The starting part of every IP address i
of the
s of IP
D depen
Table 9-1 d
e class o
bes the stru
work (ref ction 9.1
ss.
able 9-1 Structu
Class Field 1 Field 2 Field 3 Field 4
Class A Network ID Host ID
Class B Network ID Host ID
Class C Network ID Host ID
The following are some valid IP address examples:
Class A: 10.30.6.125 (network ID = 10, host ID= 30.6.125)
rk ID = 129.88, host ID = 16.49)
9.1.2 Classes of IP Addresses
hosts
s such as enterprises and governments.
ver two million (2,097,152 exactly)
ss
Inter lly of this class networks.
Follo dress:
z an IP address is to look at its number in
number is from 192 to 223.
(The numbers for special use are not given here.)
Class B: 129.88.16.49 (netwo
Class C: 192.60.201.11 (network ID = 192.60.201, host ID = 11)
Three common IP addresses are of Cass A, B, and C. (Class D is for special use and is
beyond the scope of this discussion.) These classes have different uses and
characteristics.
The class A network is the largest on the Internet. This allows at least 16 million
per network. Such 126 class A networks can hold at least two billion PCs. These
enormous networks are quite suitable for the LAN or Internet fundamental
organizations such as Internet service provider (ISP).
The class B network is relatively smaller than the class A network, but it still allows
16,384 class B networks and 65,000 hosts in each class B network. This kind of
network is suitable for the large organization
The class C network is the smallest one. It allows o
cla C networks and 254 hosts in each class C network. The LANs connecting to the
net are usua
wing are the key points about the IP ad
The easiest way to determine the class of
the field 1:
Class A: The number is from 1 to 126.
Class B: The number is from 128 to 191.
Class C: The