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Multiple branch locations, DHCP configuration

Posted on 2009-04-01
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Last Modified: 2012-05-06
I work for a small bank with a few branches.  Our current setup is a standard star topology with each branch tied to corporate with their own individual T1 line.  Each branch is running it's own domain controller, dns server (AD integrated), and their own DHCP server.  All DC's are Windows Server 2003 and all branches use a Cisco 2811 to connect to corporate.

Due to many complications, we are reconfiguring the entire network scheme.  To start things off, we are demoting all domain controllers at the branches and sending all DNS and DHCP traffic to the corporate DC/DNS/DHCP to start fresh. (yes I understand the traffic congestion concerns).  

The current plan (and will be temporary) is to create scopes for each branch with the corporate DHCP server.
ie
10.10.2.0 - Branch A - 003 - 10.10.2.1(DG at branch)
10.10.3.0 - Branch B - 003 - 10.10.3.1(DG at branch)
My question is, if the workstations at Branch A are set to Obtain everything automatically, will the DHCP requests pass through the gateway to reach the corporate DHCP server?  Or does there HAVE to be a DHCP server located at that branch?  
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Question by:macdaddy2005
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MattShadbolt earned 2000 total points
ID: 24044908
You need to configure DHCP relay on the branch office 2811's.

ip helper-address X.X.X.X (ip address of your DHCP server.
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