{"id":7227,"date":"2016-04-23T13:03:24","date_gmt":"2016-04-23T13:03:24","guid":{"rendered":"http:\/\/www.esds.co.in\/blog\/?p=7227"},"modified":"2021-02-25T06:45:55","modified_gmt":"2021-02-25T06:45:55","slug":"difference-between-unicast-broadcast-and-multicast","status":"publish","type":"post","link":"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/","title":{"rendered":"A Practical Guide to Differentiate Unicast, Broadcast &#038; Multicast"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"674\" height=\"400\" src=\"https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2021\/02\/Difference-between-unicast-broadcast-and-multicast.png\" alt=\"Difference between unicast, broadcast and multicast\" class=\"wp-image-11743\" srcset=\"https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2021\/02\/Difference-between-unicast-broadcast-and-multicast.png 674w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2021\/02\/Difference-between-unicast-broadcast-and-multicast-300x178.png 300w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2021\/02\/Difference-between-unicast-broadcast-and-multicast-150x89.png 150w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2021\/02\/Difference-between-unicast-broadcast-and-multicast-660x392.png 660w\" sizes=\"auto, (max-width: 674px) 100vw, 674px\" \/><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"i\"><\/span>&nbsp;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h2 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"Difference_between_Unicast_Broadcast_Multicast\"><\/span>Difference between&nbsp;Unicast, Broadcast &amp; Multicast<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p style=\"text-align: justify;\">Data is transported over a network by three simple methods i.e. Unicast, Broadcast, and Multicast. So let\u2019s begin to summarize the difference between <strong>these three:<\/strong><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_76 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#i\" >&nbsp;<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#Difference_between_Unicast_Broadcast_Multicast\" >Difference between&nbsp;Unicast, Broadcast &amp; Multicast<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#So_lets_Dig_Deeper_into_this_subject\" >So let\u2019s Dig Deeper into this subject<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#So_what_is_the_difference_between_Multicast_and_Unicast\" >So what is the difference between Multicast and Unicast?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#Unicast\" >Unicast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#Multicast\" >Multicast<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#Multicast_is_true_broadcast\" >Multicast is true broadcast?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.esds.co.in\/blog\/difference-between-unicast-broadcast-and-multicast\/#Important_note\" >Important note<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<ul class=\"wp-block-list\"><li><strong>Unicast<\/strong>: from one source to one destination i.e. One-to-One<\/li><li><strong>Broadcast<\/strong>: from one source to all possible destinations i.e. One-to-All<\/li><li><strong>Multicast<\/strong>: from one source to multiple destinations stating an interest in receiving the traffic i.e. One-to-Many<\/li><\/ul>\n\n\n\n<p style=\"text-align: justify;\"><strong>Note<\/strong>: There is no separate classification for Many-to-Many applications, for example, video conferencing or online gaming, where multiple sources for the same receiver and where receivers often are double as sources. This service model works on the basis of one-to-many multicast and for that reason requires no unique protocol. The original multicast design i.e. RFC 1112, supports both the ASM (any-source-multicast) based on a many-to-many service model and the SSM (source-specific multicast) based on a one-to-many model.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"So_lets_Dig_Deeper_into_this_subject\"><\/span><strong>So let\u2019s Dig Deeper into this subject<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"674\" height=\"331\" src=\"https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2016\/04\/Difference-between-unicast-broadcast-and-multicast-diagram.png\" alt=\"Difference between unicast, broadcast and multicast-diagram\" class=\"wp-image-7230\" srcset=\"https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2016\/04\/Difference-between-unicast-broadcast-and-multicast-diagram.png 674w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2016\/04\/Difference-between-unicast-broadcast-and-multicast-diagram-150x74.png 150w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2016\/04\/Difference-between-unicast-broadcast-and-multicast-diagram-300x147.png 300w, https:\/\/www.esds.co.in\/blog\/wp-content\/uploads\/2016\/04\/Difference-between-unicast-broadcast-and-multicast-diagram-660x324.png 660w\" sizes=\"auto, (max-width: 674px) 100vw, 674px\" \/><\/figure><\/div>\n\n\n\n<p style=\"text-align: justify;\"><strong>Unicast<\/strong>: traffic, many streams of IP packets that move across networks flow from a single point, such as a website server, to a single endpoint such as a client PC. This is the most common form of information transference on networks.<\/p>\n\n\n\n<p style=\"text-align: justify;\"><strong>Broadcast: <\/strong>Here, traffic streams from a single point to all possible endpoints within reach on the network, which is generally a LAN. This is the easiest technique to ensure traffic reaches its destinations.<\/p>\n\n\n\n<p style=\"text-align: justify;\">This mode is mainly utilized by television networks for video and audio distribution. Even if the television network is a cable television (CATV) system, the source signal reaches all possible destinations, which is the key reason that some channels\u2019 content is scrambled. Broadcasting is not practicable on the public Internet due to the massive amount of unnecessary data that would continually reach each user\u2019s device, the complications and impact of scrambling, and related privacy issues.<\/p>\n\n\n\n<p style=\"text-align: justify;\"><strong>Multicast: <\/strong>In this method traffic recline between the boundaries of unicast (one point to one destination) and broadcast (one point to all destinations). And multicast is a \u201cone source to many destinations\u201d way of traffic distribution, which means that only the destinations that openly point to their requisite to accept the data from a specific source to receive the traffic stream.<\/p>\n\n\n\n<p style=\"text-align: justify;\">On an IP network, destinations (i.e. clients) do not regularly communicate straight to sources (i.e. servers), because the routers between source and destination must be able to regulate the topology of the network from unicast or multicast side to avoid disordered routing traffic. Multicast routers replicate packets received on one input interface and send the replicas out on multiple output interfaces.<\/p>\n\n\n\n<p style=\"text-align: justify;\">In the multicast model, the source and destinations are almost every time \u201cHost\u201d and not \u201cRouters\u201d. The multicast traffic is spread by multicast routers across the network from source to destination. The multicast routers must find multicast sources on the network, send out copies of packets on a number of interfaces, avoid loops, connect interested destinations with accurate sources and keep the flow of unsolicited packets to a minimum. The standard protocols of multicast routing provide most of these facilities, but some router architecture cannot send multiple copies of packets and so do not support direct multicasting.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"So_what_is_the_difference_between_Multicast_and_Unicast\"><\/span><strong>So what is the difference between Multicast and Unicast?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p style=\"text-align: justify;\">There are two central methods that Windows Media servers use to send data to Windows Media Player clients i.e. Unicast and Multicast\u2026<\/p>\n\n\n\n<p style=\"text-align: justify;\">Multicast or Unicast can be used for broadcasting live video or audio. Your network setting by default determines who your clients are and what sort of broadcast you need to prefer.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"Unicast\"><\/span><strong>Unicast<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p style=\"text-align: justify;\"><strong>1.<\/strong> Traffic is sent from one host to another. A replica of each packet in the data stream goes to every host that requests it.<\/p>\n\n\n\n<p style=\"text-align: justify;\"><strong>2.<\/strong> The implementation of unicast applications is a bit easy as they use well-established <strong><a href=\"https:\/\/www.esds.co.in\/kb\/frequently-asked-questions-about-ip-internet-protocol\/\" target=\"_blank\" rel=\"noreferrer noopener\">IP protocols<\/a><\/strong>; however, they are particularly incompetent when there is a need for many-to-many communications. In the meantime, all packets in the data stream must be sent to every host requesting access to the data stream. However, this type of transmission is ineffective in terms of both network and server resources as it equally presents obvious scalability issues.<\/p>\n\n\n\n<p style=\"text-align: justify;\"><strong>3.<\/strong> This is a one-to-one connection between the client and the server. Unicast uses IP provision techniques such as TCP (transmission control protocol) and UDP (user datagram protocol), which are session-based protocols. Once a Windows media player client connects via unicast to a Windows media server that client gets a straight connection to the server. Every unicast client that connects to the server takes up extra bandwidth. For instance, if you have 10 clients all performing 100 Kbps (kilobits per second) streams, it means those clients taking up 1,000 Kbps. But you have a single client using the 100 Kbps stream, only 100 Kbps is being used.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multicast\"><\/span><strong>Multicast<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p style=\"text-align: justify;\">Multicast lets server\u2019s direct single copies of data streams that are then simulated and routed to hosts that request it.<\/p>\n\n\n\n<p style=\"text-align: justify;\">Hence, rather than sending thousands of copies of a streaming event, the server instead streams a single flow that is then directed by routers on the network to the hosts that have specified that they need to get the stream. This removes the requirement to send redundant traffic over the network and also be likely to reduce CPU load on systems, which are not using the multicast system, yielding important enhancement to efficiency for both server and network.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"Multicast_is_true_broadcast\"><\/span><strong>Multicast is true broadcast?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p style=\"text-align: justify;\">The multicast source depends on multicast-enabled routers to forward the packets to all clients\u2019 subnets that have clients listening. However, there is no direct affiliation between clients and Windows media servers. The Windows media server creates a \u201c.nsc\u201d (NetShow channel) file when the multicast station is first formed. Usually, the .nsc file is sent to the client from a web server. This file holds data that the Windows media player requires to listen for the multicast.\u00a0 This is quite the same as fine-tuning a station on a radio. Every client which eavesdrops on the multicast includes no extra overhead on the server. In fact, the server sends out only a single stream per multicast station. The equal load is experienced on the server whether only a single client or multiple clients are listening.<\/p>\n\n\n\n<h3 class=\"has-text-align-center wp-block-heading\"><span class=\"ez-toc-section\" id=\"Important_note\"><\/span><strong>Important note<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p style=\"text-align: justify;\">Multicast on the Internet is usually not a concrete solution because only small sections of the Internet are enabled with Multicast. On the other hand, incorporate environments where all routers are multicast-enabled can save quite a bit of bandwidth.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Data is transported over a network by three simple methods i.e. Unicast, Broadcast, and Multicast. So let\u2019s begin to summarize the difference between these three&#8230;<\/p>\n","protected":false},"author":26,"featured_media":7229,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1559],"tags":[2515,1462,1461,2516,2512,2517],"class_list":["post-7227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-leaders-talk","tag-broadcast","tag-broadcast-and-multicast","tag-difference-between-unicast","tag-multicast","tag-unicast","tag-what-is-the-difference-between-broadcast-unicast-and-multicast"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/posts\/7227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/comments?post=7227"}],"version-history":[{"count":4,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/posts\/7227\/revisions"}],"predecessor-version":[{"id":11748,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/posts\/7227\/revisions\/11748"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/media\/7229"}],"wp:attachment":[{"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/media?parent=7227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/categories?post=7227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.esds.co.in\/blog\/wp-json\/wp\/v2\/tags?post=7227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}