DHCP Server behind a NAT Router

Hi,
We have a Local Area Network at work and on this network we have a VM Server with Windows 2003 Server R2 that we plan on using for Active Directory and this server also has DHCP and DNS Server configured on it. 10.1.0.18 is the Server IP.
From this Network I have my own private address range 10.1.146.1-255
which connects to my NAT Router. I am able to get an ip address of 10.1.146.100 from the DHCP Server for my XP Client

interface vlan10
ip address 10.1.146.1 255.255.128.0
ip nat outside
no shutdown

Next I setup a second interface on my NAT Router.
Interface Vlan 300
ip address 30.1.180.1 255.255.255.0
ip nat inside
ip helper address 10.1.0.18
no shutdown

I set up the range on the same DHCP Server
When I connect my Windows XP Client to Interface Vlan 300 I am unable to get a DHCP address on this client but on the server it says that it received an ip address.
DHCP Server address
ip address 10.1.0.18
netmask 255.255.254.0
Gateway 10.1.0.1

DHCP Server Setup
Vlan 300
ip range 30.1.180.100 -30.1.180.200
Gateway 30.1.180.1
DHCP Options:
003 Router 10.1.146.1
006 DNS Server 10.1.0.18
015 DNS Domain Name SQA.com
044 WINS/NBNS 10.1.0.18
046 WINS/NBT Node Type 0x8



Any Ideas on how to fix this so I can get a DHCP address on Interface Vlan 300 I am assuming it is a configuration issue.
Thanks
Scott

 

Is your router setup to forward DHCP? Most routers out of the box are not configured to do this. Tou need to be handling ports 67 and 68.
See http://www.comptechdoc.org/independent/networking/guide/netdhcp.html for a good explanation