What is the full form of APIPA
APIPA: Automatic Private Internet Protocol Addressing
APIPA is an acronym stands for Automatic Private Internet
Protocol Addressing. It is a specific feature of operating system
(especially Windows based operating system such as Windows 98,
Windows 2000, and Windows XP) that facilitates a personal
computer to assign an IP address by itself when the DHCP (Dynamic
Host Configuration Protocol) is not available.
How it works
APIPA serves as a backup operational mode for DHCP server
and makes it capable to manage small Local Area Network. It
assigns a unique number called Internet Protocol (IP) to each
user or device to connect to a network.
Usage of APIPA
- With APIPA, an IP address and subnet mask can be
automatically self configured.
- APIPA is generally used for non-routed small business
environment, usually less than 25 clients.
- APIPA facilitates client to configure itself with a
default class B subnet mask of 255.255.0.0.
- APIPA service checks regularly for the presence of DHCP
server. If it finds a DHCP server on the network, it stops, and
the DHCP server replaces the APIPA networking addresses with
dynamically assigned addresses.