LTM - Per-VLAN Default Gateways

Hello all, first poster... got a problem.

 

 

I think I have an instance where I need to use Per-Vlan default gateways at a customer site. They are using a pair of LTM's to load balance DMZ and Internal applications where all servers are plugged into the same core switches.

 

 

I need to make sure that traffic from a certain vlan (the DMZ server VLAN) is forced back through the firewall instead of being directed back to the core where it gets routed to internal servers. So I was thinking of using the PV def gateways. The article i read says you have to create the pool and the node would be the floating address. If i set a VLAn to use the frontend/transit floating address as the gateway it will send traffic out that interface, but how will it know to send it to the IP on the firewall?? Can I do the same setup with these changes... Setup a node that points to an ip on the firewall. Create the pool and then the virtual server to send all traffic, port, protocol etc, etc to that node, instead of the suggested local floating IP?? Thoughts.. Thanks.