作者: Krishna Narayanaswamy , Theodore L. Ross , Richard Szmauz , Barry A. Spinney , Nigel T. Poole
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摘要: A network switch using information from OSI model Layers (2) and above can identify a particular sequence of messages that occur as result requested process, the called flow. The establishes virtual connection at (4) to route data packet according flow which belongs. performs application-level switching in higher layers differentiate between flows web browsing file transfer or database query, even though both may use same layer (3) protocol.