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【正文】 N17 Basic Functions of Protocols ? Encapsulation/Decapsulation ? Segmentation/Reassembly ? Connection Establishing ? Flow Control ? Error Control ? Multiplexing/Demultiplexing CGU NDSL LAN18 Encapsulation/Decapsulation Mechanisms 應(yīng)用層 表達(dá)層 會(huì)議層 傳輸層 網(wǎng)路層 鏈結(jié)層 實(shí)體層 應(yīng)用層 表達(dá)層 會(huì)議層 傳輸層 網(wǎng)路層 鏈結(jié)層 實(shí)體層 應(yīng)用軟體 X AH PH SH TH NH 資料 資料 資料 資料 資料 資料 資料 F A C FCS F 位元串 通訊路徑 應(yīng)用軟體 Y 往下送時(shí)訊框包裝 往上送時(shí)訊框拆裝 CGU NDSL LAN19 IEEE Project 802 Standards ? IEEE High Level Interface ? IEEE Local Bridge (Spanning Tree Algorithm) ? IEEE Remote Bridge ? IEEE Traffic Class Expediting and Dynamic Multicast Filtering ? IEEE Virtual LANs ? IEEE Port Based Network Access Control ? IEEE LLC (Logical Link Control) ? IEEE CSMA/CD (Carrier Sense Multiple Access with Collision Detection ? IEEE TokenBus ? IEEE TokenRing ? IEEE DQDB (Distributed Queue Dual Bus) ? IEEE Broadband Technical Advisory Group ? IEEE Fiber Optic Technical Advisory Group ? IEEE Integrated Voice and Data LAN Working Group ? IEEE Interoperable LAN/MAN Security CGU NDSL LAN20 IEEE Project 802 Standards ? IEEE CSMA/CA Wireless LAN ? IEEE HighSpeed Physical Layer in the 5GHz Band ? IEEE HigherSpeed Physical Layer Extension in the GHz Band ? IEEE Medium Access Control (MAC) Enhancements for Quality of Service (QoS) – Draft ? IEEE InterAccess Point Protocol (IAPP) – Draft D3 ? IEEE Further HigherSpeed Physical Layer Extension in the GHz Band – Draft ? IEEE Spectrum and Transmit Power Management extensions in the 5GHz band in Europe Draft ? IEEE Enhanced Security – Draft ? IEEE DemandPriority (100VGAnyLAN) ? IEEE ? IEEE Standard Protocol for CableTV Based Broadband Communication Network ? IEEE Wireless Personal Area Networks Access Method and Physical Layer Specifications ? IEEE Wireless Personal Area Networks (Bluetooth) ? IEEE Coexistence ? IEEE WPAN Higher Rate ? IEEE WPAN Low Rate (Zigbee) ? IEEE Broadband Wireless Access Method and Physical Layer Specifications CGU NDSL LAN21 IEEE Project
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