Printer Friendly Version
A Windows-based computer that is configured to use DHCP can automatically assign itself an Internet Protocol (IP) address if a DHCP server is not available. For example, this could occur on a network without a DHCP server, or on a network if a DHCP server is temporarily down for maintenance.
If you are a Cisco geek we have just the monitoring tool for you. Using over 670 built-in templates, OpManager lets you start monitoring anything Cisco plus your entire network in 30 minutes flat.
The software makes use of the latest Cisco technologies; CDP, IP SLA, Netflow, CbQoS and NBAR to name a few, to monitor and manage the performance of your Cisco network.
Read more about APIPA on the What's APIPA? page.
You may want to disable it in any of the following cases:
-
Your network uses routers.
-
Your network is connected to the Internet without a NAT or proxy server.
To disable automatic address configuration do the following:
Windows 2000/XP/2003
-
Open Registry Editor.
-
In Registry Editor, navigate to the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\adapter_name-
Create the following entry:
IPAutoconfigurationEnabled: REG_DWORD
-
Assign a value of 0 to disable Automatic Private IP Addressing (APIPA) support for the selected network adapter.
-
Close Registry Editor.
Note: You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure.
If the IPAutoconfigurationEnabled entry is not present, a default value of 1 is assumed, which indicates that APIPA is used.
If multiple adapters are installed, you can disable APIPA for all installed adapters by setting the IPAutoconfigurationEnabled entry to 0 at the following registry key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\ParametersWindows 98/ME
-
Open Registry Editor.
-
In Registry Editor, navigate to the following registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\DHCP-
Create the following entry:
IPAutoconfigurationEnabled: REG_DWORD
-
Assign a value of 0 to disable Automatic Private IP Addressing (APIPA) support for the selected network adapter.
-
Close Registry Editor.
