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re: Question about 'Share an Internet Connection'
Monday, November 4, 2002 at 4:42 pm
Windows XP Annoyances Discussion Forum
Posted by Donny
(1 messages posted)
I had the same problem and found the follwing answer:
Automatic Private Address Configuration
Automatic Private IP Addressing (APIPA) is used to allocate addresses within subnetworks
that either do not have a local DHCP server or do not have a
routed path to a DHCP server on another subnetwork.
By default, a computer running Windows 2000 first tries to contact a DHCP server
to obtain an IP address and related configuration information for each installed
network connection:
If a DHCP server is reached and the leased configuration is successful, TCP/IP
configuration is completed.
If a DHCP server is not reached, the computer instead uses APIPA to automatically
configure TCP/IP.
When you use APIPA, Windows 2000 determines an address in the reserved IP address
range from
169.254.1.1 through 169.254.254.254. This address is used as a temporary IP address
configuration until a DHCP server is located. The subnet mask is set to 255.255.0.0.
The APIPA range of IP addresses (169.254.0.0/16) has been set aside for use in IP
address autoconfiguration by the Internet Assigned Numbers Authority (IANA; www.iana.org/).
Any IP addresses within this range are not usable on the Internet. APIPA eliminates
IP address configuration for single-network small office or home office networks
that are not connected to the Internet.
End of quote. So, in a nutshell, all computers must have DHCP enabled (thru TCP\IP
protocol) and the one sharing the internet connection must be connected to the internet
BEFORE you boot up the other computer(s). To check to see if you have DHCP assignment
or APIPA, right click on your local network connection icon in systray, select STATUS,
then SUPPORT tab. It will state your address type, either "Automatic Private Address"
or "Assigned By DHCP".
Two places to go for XP:
http://www.microsoft.com/windowsxp/expertzone/columns/crawford/02april22.asp
http://www.microsoft.com/windowsxp/pro/techinfo/administration/homenetbridge/default.asp
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 | | | | | |  | re: Question about 'Share an Internet Connection' (Donny: Mon, Nov 4, 2002, 4:42 pm) |
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