254.X.Y.!EXAM TIP IF YOU ARE TROUBLESHOOTING A NETWORK PROBLEM AND...

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: