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VPN: Have VPN assign addresses to remot econnections and dhcp server assign addresses to local connections

adimit
adimit asked
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Last Modified: 2010-04-12
Hello

I have a simple linksys rvl200 VPN router that connects 3 offices together.
In my central office my VPN router is assigning IP addresses to each local computer (because it has DHCP enabled). The central office has a DHCP server running win2k3. I want all local computers to get their address from the DHCP server, not the VPN. How can this be done? Do I need new hardware?
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Commented:
Hi,

to relay DHCP requests through a router you need a DHCP relay agent on the router (or somewhere in the network). Reason: DHCP Requests are Layer2 broadcast messages which cannot be routed. I checked the manual of your router and it does NOT offer a DHCP relay agent. So, you cannot get IP addresses from the central DHCP server. If however your router did have a DHCP relay agent it would work. However, you need special configuations on the DHCP server, as you obviously cannot have the same subnet in all three offices.

http://en.wikipedia.org/wiki/Dhcp

Regards
Kurt

Author

Commented:
the VPN connection between all 3 offices works fine. All I am looking for is to have each DHCP server in each local office server up DHCP addresses to its local users. Will a relay agent do this? If so, what is the benefit of having a DHCP server, separate from the router?
Commented:
This one is on us!
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