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How to move a DHCP server

Posted on 2007-11-27
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Last Modified: 2013-12-05
Hi
i have a dhcp server on a win 2k machine, i am getting rid of it and want to move it to a 2003 new server. they are both on the same subnet. how can i migrate this with little hassle and will there be any problems after wards for the clients
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Question by:mikeleahy
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Expert Comment

by:KCTS
ID: 20357002
If you have a simple setup and you got a period when your system is not in use - if so schedule it to happen then as follows:

In the run up to the change modify DHCP to issue a short lease - 1hr maybe

Install DHCP on the other server, create a scope with all the scope options and activate the scope but don't authorise the new server yet

Wait until you enter the period of non use - 6pm on friday evening for example, unauthorise the old  DHCP server and authorise the new one.

If you have a more complex requirment you can export and import the DHCP database across servers - see http://technet2.microsoft.com/windowsserver/en/library/4207a8c1-2788-4be8-b9f8-ce28501a24571033.mspx?mfr=true
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Author Comment

by:mikeleahy
ID: 20357065
will the backup and restore work from 2k to 2003?? i think i ran into some problems with this b4
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Author Comment

by:mikeleahy
ID: 20357082
there is no backup option on the win 2k dhcp
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Expert Comment

by:KCTS
ID: 20357101
How complex is your environment - if you just have a couple of scopes and few reservations its not worth the hassle

You can use the netsh command to import/export - see http://support.microsoft.com/kb/281626
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Author Comment

by:mikeleahy
ID: 20357195
i have quite a few exlcusions
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Expert Comment

by:KCTS
ID: 20357224
use netsh then
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Accepted Solution

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balmasri earned 250 total points
ID: 20357363
After u use netsh don't forget to modify conflict detection attempts <2
transfer the DHCP database from winnt\system32\dhcp to windows\system32\dhcp and change the settings from dhcp console >server>properties>advanced
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Author Comment

by:mikeleahy
ID: 20357995
can i do an export in a live environment to test it or will it bring down  the dhcp server
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Expert Comment

by:balmasri
ID: 20364810
yes you can do that in a live env.
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Author Comment

by:mikeleahy
ID: 20375561
netsh is giving an error. dhcpexim is another tool, used that to export file, wudnt import on the 2003 server as it says its incorrect format
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Expert Comment

by:balmasri
ID: 20390458
did you try the steps in the article :
http://support.microsoft.com/kb/325473
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Expert Comment

by:balmasri
ID: 20418091
any news?
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Author Comment

by:mikeleahy
ID: 20418155
yeah.  i did the netsh step and no good
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