Currently an organization i work for is looking at changing their network topology. They have a netgear fvx538 router as their core routing equipmrnt and it also functions as the firewall. we are proposing using the cisco 3945 as the core router an ASA 5510 as the firewall, the distribution switch would be the 3750 switch and the access layer switches can still be the netgear gsm 7328s since the switches are already on the network and to reduce the cost of buying all new 2960 switchws for the 7 floors. Are there any flaws to this topology or improvements or unforeseeable issues?