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A SEMINAR REPORT ON ASYNCHRONOUS TRANSFER MODE(ATM) Under the Guidance of Mr R.K.Shial By

A SEMINAR REPORT ON ASYNCHRONOUS TRANSFER MODE(ATM) Under the Guidance of Mr R.K.Shial By Sangram Sekhar Choudhuri CS200118218. High performance, cell-oriented switching and multiplexing technology Utilizes fixed-length packets to carry different types of traffic

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A SEMINAR REPORT ON ASYNCHRONOUS TRANSFER MODE(ATM) Under the Guidance of Mr R.K.Shial By

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  1. A SEMINAR REPORT ON ASYNCHRONOUS TRANSFER MODE(ATM) Under the Guidance of Mr R.K.Shial By Sangram Sekhar Choudhuri CS200118218

  2. High performance, cell-oriented switching and multiplexing technology Utilizes fixed-length packets to carry different types of traffic Helps in efficient multimedia applications, high-speed LAN connections and used in broad range of networking devices INTRODUCTION

  3. OVERVIEW

  4. high performance via hardware switching dynamic bandwidth for bursty traffic class-of-service support for multimedia scalability in speed and network size common LAN/WAN architecture opportunities for simplification via VC architecture international standards compliance BENEFITS OF ATM

  5. ATM CELL HEADER FORMAT

  6. ATM REFERENCE MODEL

  7. ATM ADDRESS FORMAT

  8. constant bit rate (CBR) variable bit rate–non-real time (VBR–NRT) variable bit rate–real time (VBR–RT) available bit rate (ABR) unspecified bit rate (UBR) ATM SERVICE CLASSES

  9. cell loss ratio (CLR) cell transfer delay (CTD) cell delay variation (CDV) peak cell rate (PCR) burst tolerance (BT) sustained cell rate (SCR) ATM TECHNICAL PARAMETERS

  10. A cohesive set of specifications that provide a stable ATM framework. Provide the end-to-end service definitions An important ATM standard is interworking between ATM and frame relay Two ATM networking standards 1)broadband intercarrier interface (B–ICI) 2)public network-to-network interface (P–NNI) ATM STANDARDS

  11. RFC1483-specifies how interrouter traffic is encapsulated into ATM LANEMPOA- support dynamic use of ATM SVCs voice and video adaptation schemes-for efficient traffic that no natural breaks, such as a circuit carrying bits at a fixed rate DATA INSERTION SCHEMES

  12. ATM LAN EMULATION(LANE) • LANE components • 1)LANE clients • 2)LANE servers

  13. Handled by VBR–RT VCs using AAL–5 for MPEG2 on ATM for video-on-demand applications MPEG2 coding can result in two modes: program streams—variable-length packets carrying single or multiple programs transport streams—188-byte packets that contain multiple programs Time stamps are inserted into MPEG2 packets during the encoding and multiplexing process to make better use of networking resources. VIDEO OVER ATM

  14. VBR–RT connections is used over ATM which uses silence period. Various dynamic compression techniques are used to free bandwidth and alleviate congestion A further enhancement is to support voice switching over SVCs which interprets PBX (private branch exchange) signaling and routing voice calls to the appropriate destination PBX VOICE OVER ATM

  15. objectives :To deliver quality-of-service (QoS) for multimedia applications and provide overall optimization of network resources. categorized into three distinct elements nodal-level controls that operate in real time network-level controls operate in near real time network engineering capabilities operating in non real time NETWORK TRAFFIC MANAGEMENT

  16. ATM APPLICATIONS

  17. ATM and IP offer: Scalability, traffic engineering, service differentiation, high availability, value-added applications such as Virtual Private Networks (VPNs) Some specifications of ATM and IP Multi-Protocol over ATM (MPOA) as addition to LAN Emulation (LANE) Additions to ATM's superior routing protocol PNNI adoption of Frame-based ATM over Sonet/SDH (FAST) ATM AND IP INTERWORKING

  18. ATM technology is the only technology that can guarantee a certain and predefined quality of service. The growth of the Internet, need for broadband access and e-commerce are spurring the need for a reliable, flexible, scalable, predictable, versatile transport system and that is given by ATM Technology. For voice, video, data and images together, the next generation network depends on ATM. CONCLUSION

  19. THANK YOU

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