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Active directory integrated dhcp

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6 replies

by donalconlon

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Hello,
I'm trying to setup two dhcp servers on the the one Windows 2000 lan. I want it to work just like multiple dns servers on the one lan where they are all kept in sync by active directory. This is to provide full failover if one of the dhcp servers fails. How can this arrangement be setup. Thanks.

6 replies

by beermonster

Hi,
You can't set DHCP as active directory intergrated. What you need to do is split the dhcp scope acroos both servers, so for example for a class c network on 10.1.1.0 the first server is set to give addresses

10.1.1.1 - 10.1.1.125

and the second server to give addresses

10.1.1.126 - 10.1.1.254

This means that both dhcp servers are active concurrently which means redundancy, and neither server will give out addresses in the others range which means no duplicate IP addresses.....

by donalconlon

Are there any special considerations to be taken into account then when changing from one server with one full scope which is what we have now to two different servers with split scopes. Thanks.

by p.j.hutchison

You can't. What we do is set up DHCP on two servers, but only one is active. The DHCP database is copied regularly to the backup server. If the orginal server fails, we can start up DHCP on the 2nd server with minimum downtime!

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