Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

How do you configure Server 2003 to handle vlans? I believe I need to use the IP Helper in DHCP, but am unsure and am unable to find a decent tutorial or guide on doing this. Can someone help me or point me to a site that has a guide for setting up Vlans in DHCP on Server 2003 std.

thanks in advance!

share|improve this question
up vote 0 down vote accepted

You don't set up VLAN's in DHCP directly. You set up a DHCP scope for each VLAN in DHCP and configure the router that separates the VLAN's as a DHCP relay.

share|improve this answer
Thank you for the reply. I've never done this, so I want to make sure that I understand correctly. I'll set up a scope in DHCP (192.168.3.x), go to my router and assign it an address in that scope, find wherever it says enable dhcp relay and check a box? Is there typically more involved than that or is it pretty simple? – msindle Jun 20 '11 at 17:28
At a very simple level: Your router will need an interface attached to that subnet (VLAN subnet) with an ip address valid for that subnet. You'll then enable the DHCP relay function on the router and that should do it. – joeqwerty Jun 20 '11 at 18:01
Ok I set up the scope on my DHCP server, but I am having trouble getting the router to pull addresses from that scope. It either pulls from my current scope (192.168.1.x) or it kicks me out and I have to reset it. I'm using a Netgear GSM7248 in one building (the one i'm trying to put on VLAN 3 using 192.168.3.x) and that connects back to the core switch which is a GSM7312 – msindle Jun 20 '11 at 20:05
I'm not understanding you. Do you mean that clients behind that router are not getting DHCP assigned ip addresses? When a DHCP client on that subnet requests an ip address the router should forward the DHCP packets to your server based on the ip address (of the server) that you configured in the DHCP relay settings. The router(s) also need to be able to forward the DHCP broadcasts between subnets. – joeqwerty Jun 20 '11 at 20:21
They are getting DHCP assigned ip address, but they are from the wrong scope. I apologize if I'm not being very clear I have not dealt with this very much in the past. Thanks for your assistance. – msindle Jun 21 '11 at 17:22

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.