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Aolynk DR814Q ADSL2+ Broadband Router 9 Appendix – IP Address and Subnet Mask
70
9 Appendix – IP Addres
Subnet Mask
9.1 IP Address
s and
Note:
z This section refers to the IP address of IPv4 (version 4 of the Internet Protocol) only
and the IP address of IPv6 is not covered.
This section describes the basic knowledge of binary numbers, bits, and bytes.
z
An IP address, like the telephone number on the Internet, is used to identify the
individual node (a PC or network device) on the Internet. Every IP address contains
fou
r sets of numbers, each from 0 to 255 and separated by dots, for example
The representation of four sets of digits separated by dots for IP address is called
9.1.1 Stru
ce, the
identify a group with thousands of
e the last four digits identify a specific line in this group.
et or the intranet.
20.56.0.211. These numbers are called, from left to right, field 1, field 2, field 3, and field
4.
dotted decimal notation.
cture of the IP Address
Like a telephone number, the IP address contains two components. For instan
first three digits of a seven-digit telephone number
telephone lines, whil
Similarly, an IP address contains two components:
z Network ID
Identify a specific network segment on the Intern
z Host ID
Identify a specific PC or device on the segment.