DHCP is turned off on the 3600 so any devices plugged into it get an address from the 192.168.1.0 scope.
On the 3609, I setup a vlan with a network of 172.16.5.0/24. Setup a DHCP server on there as well.
What's the "3609"? Is that the Dell Server?
I'm not sure what you're trying to achieve here, is it Internet access for the VLAN?