Unicasting , Broadcasting And Multicasting New

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Unicasting , Broadcasting And Multicasting New

  1. 1. Unicasting , broadcasting and multicasting<br />
  2. 2. Unicasting<br />Unicast transmission:<br /><ul><li> Sending of messages to a single network destination host on a packet switching network.</li></ul>packet switching: Groups all transmitted data irrespective of content, type, or structure – into suitably-sized blocks, called packets. <br /> One-to one connection between the client and the server.<br />
  3. 3. How it works????? <br />Use IP delivery methods (session-based protocols)such as <br />Transmission Control Protocol (TCP) <br />User Datagram Protocol (UDP)<br />Each unicast client that connects to the server takes up additional bandwidth.<br />Client has a direct relationship to the server<br />
  4. 4. A schematic Example of unicasting<br />
  5. 5. Advantages<br />Used for all network processes in which a private or unique resource is requested.<br />Disadvantage<br />applications which are mass-distributed are too costly to be conducted<br />each network connection consumes computing resources on the sending host and requires its own separate network bandwidth for transmission.<br />
  6. 6. multicast<br />A multicasting is associated with a group of interested receivers.<br />No direct relationship between the clients and server.<br />Clients that are connected to the multicast adds no additional overhead on the server. <br />In fact, the server sends out only one stream per multicast station. The same load is experienced on the server whether only one client or 1,000 clients are listening <br />
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  8. 8. How it works???<br />Step1: The sender sends a single datagram to the multicast address <br /> Step 2:The intermediary routers take care of making copies and sending them to all receivers that have registered their interest in data from that sender.<br />
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  10. 10. ADVANTAGES <br />Datagarm received only by the interfaces that want it <br />Group addresses<br />Messages are UDP so there is no connection setup <br />Can be used across a WAN<br />Disadvantage <br />Not good for bulk data transfer <br />Multicast on the Internet is generally not practically used on large scale <br />
  11. 11. Broadcasting<br />BROADCAST - A method of sending information over a network. <br />Data comes from one source and goes to all other connected sources.<br />This has the side effect of congesting a medium or large network segment very quickly.<br />
  12. 12. 9 - 12<br />Uses and its applications<br />Network<br />Spot<br />Syndicated<br />Group of local affiliates connected to one or more national networks<br />Viable national medium for food and beverages, cars, and over-the-counter drugs<br />Growth has contributed to increase in syndicated radio<br />
  13. 13. 9 - 13<br />Uses and its applications<br />Network<br />Spot<br />Syndicated<br />When an advertiser places an ad with an individual station rather than a network<br />Makes up nearly 80% of all radio advertising<br />Messages can be tailored for particular audiences<br />
  14. 14. 9 - 14<br />Uses and its applications<br />Network<br />Spot<br />Syndicated<br />Offers advertisers a variety of high-quality, specialized, and usually original programs<br />Advertisers value syndicated programming because of the high level of audience loyalty<br />
  15. 15. thanks<br />

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