The type of switch that is useful for optimizing network performance by using ASIC to make the switch at cable speed is a multilayer switch. With this type of switch, network performance will be optimal.
A multilayer switch can be defined as a network device that has the ability to operate at a layer higher than the OSI reference model, unlike the Data Link Layer (DLL) normally used by switches. Multilayer switches can perform the functions of a switch as well as a router at an incredibly fast speed. Traditional switches check frames, whereas multilayer switches check deeper into the protocol description unit (at the packet or even at the segment level). Multilayer switches use ASIC hardware circuitry to perform the routing function. It differs from a typical router, which resides on a microprocessor and uses applications running on it to perform routing operations.
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