The Economics of Cooperative Control: Protocols are Free
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Today's de facto standard architecture is commonly referred to as the, “controller-based” architecture, sometimes referred to as the “split MAC” architecture. It involves one or more controllers and controller-based (lightweight, thin) APs. The controller-based architecture was created to solve manageability, mobility (as opposed to portability), and high operational expenditure (OPEX) problems that were prevalent in autonomous (fat, thick, standalone) AP implementations.