I am replacing a system of several servers with an HP C7000 blade system. The C7000 has BL460s with 6 nics, 6 cisco 3120gs nw switches, 2 cisco 9124E fibre switches, HP EVA 4400 san and VMWare enterprise. The switches are to be redundant pairs. The existing system was physically separated into two domains with 3 subnets each then star networked thru dumb switches to workstations / printers. I'm told I must add a core switch, replace all dumb switches and add a router to get 4 - 10 subnets out of the C7000. Is that correct ? If not, can you point me in the right direction ?