169.254.x.y.
!
Exam Tip If you are troubleshooting a network problem and discover that a client computer has an IP address on the 169.254.0.0 network, the computer has assigned itself that address using APIPA because the computer could not locate a DHCP server.
By default, the APIPA feature is enabled. However, you can disable it by specifying an
alternate configuration to use if a DHCP server cannot be located (see Figure 13-5), as
discussed in the next section.
F13us05
Figure 13-5 Specify an alternate TCP/IP configuration.
How to Specify an Alternate Configuration for TCP/IP
A feature in Windows XP Professional named Auto-Configuration For Multiple Net-
works Connectivity provides easy access to network devices and the Internet. It also
allows a mobile computer user to seamlessly operate both office and home networks
without having to manually reconfigure TCP/IP settings.
You specify an alternate configuration for TCP/IP if a DHCP server is not found. The
alternate configuration is useful when a computer is used on multiple networks, one of
which does not have a DHCP server and does not use an automatic private IP address-
ing configuration.
To configure Auto-Configuration For Multiple Networks Connectivity, use these steps: