Windows 2003 DHCP IP retention failure 2012-05-17

Windows 2003 DHCP generally does not have problems, but problems can be a headache.

For example, when you add an address, you are prompted with "no address specified" and cannot be added successfully.

The search found that people on the web encountered such problems, but there was no correct answer. After the author repeated experiments, finally found a solution to the method.

Case:

The allocated address pool is: 192.168.0.100--192.168.0.200

There was no problem before preserving the client IP,

Today, when you add an IP reservation, "No address specified" appears, checking the Mac of the client IP, and also checking that the entire address pool does not have the same Mac. But it is impossible to add in, even if add in is an unknown state.

The system is: WINDOWS2003R2 DHCP server.

Solution:

If you check the GUI interface, you do not see any reason for the conflict.

However, if the current DHCP information is exported to view the problem will be found, use the following command:

netsh dhcp server dump >c:\dhcp.txt

Open the Dhcp.txt file, search for the above error MAC address, found by a bad_address IP occupied, the IP reservation deleted. Re-add, there is no more errors.

Windows 2003 DHCP IP retention failure 2012-05-17