As it moves from a product culture to a platform culture, Cisco Systems Inc. is also reshaping a common perception of the 39-year-old firm as purely a networking business.It is playing a broader role in key elements of the enterprise, from silicon development and hybrid work to security and application deployment in the cloud.“Everybody thinks, ‘Oh, switches, routers, blah, blah, blah,’” said Bob O’Donnell (pictured), president and chief analyst at TECHnalysis Research LLC. “They’ve evolved quite a bit over the years. They are inherently involved with the creation and the delivery of applications