Planning to move away from current flat topology with /24 scheme (we're running out of IPs) to subnetted /22. Using the 3com 3870 as core switch/router. The goal is to have 4 /24 subnets:
10.2.0.0 /24 = VLAN 10-Servers
10.2.1.0 /24 = VLAN 20-Finance
10.2.2.0 /24 = VLAN 30-Development
10.2.3.0 /24 = VLAN 40-Administration
Using one DHCP server in VLAN 10 with routing between VLAN 10 and all others but no routing between VLANs 20 thru 40.
Given the above, how would I control the VLAN routing and how would I ensure that each subnet PC get's its proper IP info from DHCP?