Are you trying to find a way that allows you to migrate DHCP Reservations from one Windows server to an other? Look no further, as I’ve found the solution for you (and a few millions before me, but who cares, really?)
Today, I wrapped up the migration of SBS 2003 to SBS 2008 when I realized that I really didn’t want to add all the DHCP reservations we use manually. So I did some googling, and found a solution. After some experimenting, I came up with the following.
The requirements for this to work are simple:
1) The Source and Target server must be members of the same domain.
2) You must log in w/ an account that has sufficient rights for both servers, like a domain admin account.
The steps to follow
1. Log in to the target server.
2. Open a command window (you know, the creepy black box) and type the following:
netsh dhcp server (I.P of Source Server) scope (DHCP Scope of Source Server) dump>sometextfile.txt
As usual, you’ll have to provide your own info
- I.P of Source server: IP of the server where the reservations are available
- DHCP Scope of Source server: this is the address range scope. You can find it easily when opening the DHCP MMC
- sometextfile.txt should be replaced by your own file name; of course.
Live example: netsh dhcp server 192.168.0.126 scope 192.168.0.0 dump>reservations.txt
3. Open the file you just created; and use find / replace. Replace the IP address of the source server w/ the IP adres of the target server; and save the file.
4. In the command window, type the following command:
You’ll now see how the reservations are being loaded into the target server!
3 thoughts on “How to: Migrate DHCP reservations between servers”
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Great tip. Just notice the last command should read “netsh exec c:\pathtotextfileyoujustcreated”
Worked like a charm thanks!!!
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