atm技術與骨干網(wǎng)技術-展示頁
2025-01-31 05:26本頁面
【正文】 ction is madeVoice Video DataATM cells48octet PayloadATM 53octet cells areswitched in hardware11ATM應用12ATM體系結構? 高層? ATM適配層（ AAL） CS: 匯聚子層 SAR： 拆拼子層? ATM層? 物理層Higher Layers Higher LayersATM LayerPhysical LayerATM Adaption Layer13ATM的傳輸介質與接口速率DataRate(Mbps)DS1E1J2DS3E3E44534139Framing MediaMultiModeFiberSingleModeFiberCoaxialCableUTP–5 UTP–3 STPX(TP)(TP)ATM25STS 1STS3c/STM1155 XSTS12c/STM44B/5B (TAXI)8B/10B(Fiberchannel)62210015514ATM信元的處理TCPIPLLC/SNAPAAL 5ATMPHYConvergence SublayerSAR SublayerApp DataTCP HeaderApp DataTCP HeaderApp DataTCP HeaderIP HeaderIP HeaderApp DataTCP HeaderIP HeaderLLCLLCTCP PacketIP DatagramAAL5PDUAAL5 SARPDU 48 BytesAAL5 SARPDU 48 BytesATM Hdr5 BytesTransmission Convergence (STS3c, STM1, DS3, 4B/5B, ...)Physical Media (MMF, SMF, STP, UTP, Coax, …)48 Bytes53 Bytes ATM Cell15VC和 VP一個 VP是一些 VC的集合信元交換即將信元從一個 VP/VC交換到另一個VP/VCATM Physical LinkVirtual Channel Connection (VCC)Virtual Channels (VCs)Virtual Channels (VCs)., OC3, E3,OC12 Virtual Path (VP)Virtual Path (VP)16ATM的網(wǎng)絡接口UNIUNIIntraNNIPublic ATM NetworkPrivate ATM NetworkPrivateNNIPrivateUNI? UNI： 用戶
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