Atm

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Asynchronous Transfer Mode

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Atm

  1. 1. ATM PRADEEP THOMAS THUNDIYIL
  2. 2. Introduction <ul><li>Circuit Switched. </li></ul><ul><li>Cell Based. </li></ul><ul><li>Statistical Multiplexed. </li></ul><ul><li>Sophisticated QoS. </li></ul><ul><li>Virtual Path. </li></ul><ul><li>Virtual Connections. </li></ul>
  3. 3. ATM Service Categories <ul><li>The ATM layer supports five service categories: </li></ul><ul><li>Real-time Services </li></ul><ul><ul><li>Constant Bit Rate (CBR) </li></ul></ul><ul><ul><li>real-time Variable Bit Rate (rt-VBR) </li></ul></ul><ul><li>Non-real-time Services </li></ul><ul><ul><li>Non-real-time Variable Bit Rate (nrt-VBR) </li></ul></ul><ul><ul><li>Unspecified Bit Rate (UBR) </li></ul></ul><ul><ul><li>Available Bit Rate (ABR). </li></ul></ul>
  4. 4. ATM Capacity Allocation
  5. 5. ATM Layer Diagram
  6. 7. AAL Layer Service Category Network Priority Cell Loss AAL 1 CBR, connection oriented, Circuit Emulation CBR -1 Low AAL 2 RT VBR , conn oriented, synchronous (doesn ve SAR) RT VBR - 2 Med AAL ¾ NRT ,async, connectless NRT VBR - 3 Med AAL 5 Similar to AAL ¾, simplified header VBR , connection oriented async
  7. 8. ATM Cell Formation
  8. 10. Sublayers of AAL
  9. 16. Cell Header
  10. 17. Transmission Media
  11. 20. Virtual Path Switching
  12. 22. Receiver Modes
  13. 23. References <ul><li>http://www.techfest.com/networking/atm/atmaal.html </li></ul><ul><li>campus.murraystate.edu/tsm/tsm241/ ATM .ppt </li></ul><ul><li>http://www3.rad.com/networks/2005/atmapp/applet.htm </li></ul>

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