Active Directory Multiple sites without multiple DC's

Hi

We are rolling out a new network to another group within our company set up 2003 DC and exchange all ok but they have multiple sites split by routers.

Site 1 Main Office
Site 2 Sub Office
Site 3 Warehouse

The sub office and the warehouse have different IP ranges than the main office and connect through routers with a set default gateway pointing them to the main office.  My original plan was to put in normal DHCP scopes etc but this will not cover the multiple IP ranges or the different set default gateways - I see that putting a DC in each site and setting up extra sites would do this but it does not really look worth it for the number of people in the different sites.  Also we want to keep the IP ranges per site the same as they are currectly configures (so a re-config of the routers is a no no) any other ideas would e appreciated...
laukratkinAsked:
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hstilesConnect With a Mentor Commented:
If your router supports BOOTP forwarding, it should be possible for your DHCP server at your head office too serve the clients.  This isn;t ideal as were the link to go down for a prolonged period of time, your client machines would have problems obtaining a valid IP address.

Do you not have a server at the remote site that could be configured as a local DHCP server?  If not, I'd stick with static addressing.  You don't need to have a DC at each site.  The reasons for placing a DC on each remote site would be to minimise traffic across low bandwidth links and provide authentication in the event hat the WAN link goes down.
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laukratkinAuthor Commented:
Thanks thought this may be the only solution and static IP was our plan - but thought I would see if anybody had any other brainwaves - thanks for your input
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