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Two DHCP Server with same scope

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7 replies

by gulfstars

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I would like to have two dhcp server for Redundancy.
Is it possible to have two dhcp server's with same scope and keep it active.
My idea is that if one of the server fail's, the other server should pick up automatically.

7 replies

by baddragon

Sorry u can't, what you can do, is split the address pool in to, have one dhcp hand out the first half, the 2nd the second half. I you try what your sugesting, you will get a lot of entries with the message "BAD ADDRESS" believe me it does not work.

by ann777

You cannot do this. You can assign two DHCP servers.... but you should have different scopes for each. MS recommends some overlap (maximum of 25%) but not 100% ; essentially the servers do not comunicate with each other in what ip addresses theyhave handed out. each will keep and maintain their own list. Different scopes are best.

by timwalsh

Also, the number of available IP addresses in each scope must be at least equal to the number of devices requesting addresses, or could end up with the problem of some computers not being assigned an address.

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