It there a way to setup multiple pools/subnets on a router for an enterprise type environment. 

Example

192.168.1.X/24
192.168.2.X/24
192.168.3.X/24

I have a VLAN switch with 10 VLANs and I need a dhcp server to hand out ipaddresses.  There is a total of only about 40 devices accross 10 VLANs.

Thanks

Also I am new to Linux and OpenWRT way of life so be gentle.