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ATM

ATM. - 다양한 종류의 Service 가능 - LAN 과 WAN 에 모두 적합하다 . - 전세계적으로 인정된 표준 - 확장성 ( 다양한 Bandwidth 수용가능 ) - 하나의 Network 상에서 다양한 형태의 Data 를 빠르고 효율적으로 전송하고자 세계인이 한마음으로 정한 표준. ATM Basic Concept. ATM 의 장점. - 손쉬운 Network 확장 - Dynamic Bandwidth - Integrity Service

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ATM

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  1. ATM - 다양한 종류의 Service 가능 - LAN 과 WAN 에 모두 적합하다. - 전세계적으로 인정된 표준 - 확장성 (다양한 Bandwidth 수용가능) - 하나의 Network 상에서 다양한 형태의 Data 를 빠르고 효율적으로 전송하고자 세계인이 한마음으로 정한 표준

  2. ATM Basic Concept

  3. ATM 의 장점 - 손쉬운 Network 확장 - Dynamic Bandwidth - Integrity Service - Statistical Multiplexing

  4. 공유 Hub 공유 Hub 공유 Hub 공유 Hub 공유 Hub 기존망과 ATM 망 Wiring Closet ATM 스위치 LAN 스위치 Router A) 기존망 ATM 스위치 Router Backbone B) ATM 망

  5. Why need 53Byte Cell ..?

  6. ATM vs STM

  7. ATM Cell

  8. VP & VC

  9. Protocol Architecture -Application -48Byte Payload 생성 -Header 생성, VPI와 VCI 결정, Cell Routing -Phy. Medium 에 Data 전송

  10. Physical Layer - PM (Physical Medium) Physical Medium Function Frame Create & Delete Function

  11. Physical Layer - TC (Transmission Convergence) Frame Adaptation Function Cell Delineation HEC Creation & Detection Empty Cell Creation

  12. HEC Algorithm

  13. Cell based Physical Layer

  14. ATM Layer • Cell 다중 분리 • VP , VC 선택 • Header Create, Delete

  15. AAL Layer • 서비스 등급에 따라 Payload 에 들어갈 48Byte 구성

  16. AAL Service

  17. AAL Protocol

  18. ATM Function of Layers Higher Layers Functions Higher Layers CS Convergence AAL SAR Segmentation & Reassembly GFC Cell Header Generation/Extration Cell VCI/VPI Translation Cell Multiplexing/Demultiplexing ATM Layer Cell Rate Decoupling Cell Delineation Transmission Frame Adaptation Transmission Frame 생성,추출 TC P H Y Bit Timing Physical medium PM

  19. Higher L Higher L AAL AAL ATM ATM ATM PHY PHY PHY ATM Protocol Reference Model

  20. Legacy Protocol over ATM Bridge Bridge ATM

  21. ATM-LAN Bridge Bridging LAN Emulation Media Access Control AAL5 ATM ATM Phy Layer Phy Layer Phy Layer Phy Layer Legacy Protocol over ATM ATM Host ATM Switch Bridge Applcations. LAN Host Applications IP IPX IP IPX ODI NDIS ODI NDIS LAN Emulation Media Access Control AAL5 ATM Switch ATM Physical Layer Physical Layer

  22. Classical IP over ATM - ATM 네트워크 상에서 IP Packet 통신 - MAC 주소 대신 IP 주소 사용 - MAC 기능을 ATM 으로 대체 - IP-ATM-ARP Server IP 주소 <==> ATM 주소 ARP & Inverse ARP

  23. ARP over ATM ATMARP Server ATMARP Server Router A1 B1 LIS # 1 LIS # 2 A2 B2

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