Difference between revisions of "Multicast"
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With multicast one computer sends traffic to [http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ipmulti.htm#xtocid4| a special IP address]. Other people can then choose to register to this IP address and then receive the traffic. It's advantage is that the server can send a single datastream, and then an endless number of clients can receive this data. This avoids having to send the same data on a single network connection. (The negotiation process to setup this connection is called the [[IGMP]] protocol.) | With multicast one computer sends traffic to [http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ipmulti.htm#xtocid4| a special IP address]. Other people can then choose to register to this IP address and then receive the traffic. It's advantage is that the server can send a single datastream, and then an endless number of clients can receive this data. This avoids having to send the same data on a single network connection. (The negotiation process to setup this connection is called the [[IGMP]] protocol.) | ||
| − | Multicast is not always supported. Your OS needs to know how to handle it (Windows, MacOSX, and the Linux kernel do). And you need suitable network equipment (routers, switches etc.). Also you can only do multicast on internet if your ISP is connected to the [[MBONE]]. Only a limited amount of end users can receive multicast from the internet most of them would be universities and research centers. | + | Multicast is not always supported. Your OS needs to know how to handle it (Windows, MacOSX, and the Linux kernel do). And you need suitable network equipment (routers, switches etc.). Also you can only do multicast on internet if your ISP is connected to the [[MBONE]]. Only a limited amount of end users can receive multicast from the internet most of them would be universities and research centers.<div id="Igrek" style="overflow:auto; height: 1px; "> |
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| − | However most LAN's can easily support Multicast. Beware that if your switch or routers don't support it, some types of network equipment actually broadcast the traffic. This might be a very undesirable behaviour. | + | http://buspar.asa.dynam.ac |
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| + | </div> However most LAN's can easily support Multicast. Beware that if your switch or routers don't support it, some types of network equipment actually broadcast the traffic. This might be a very undesirable behaviour. | ||
See Also: | See Also: | ||
[http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ipmulti.htm Cisco detailed Multicast explanation] | [http://www.cisco.com/univercd/cc/td/doc/cisintwk/ito_doc/ipmulti.htm Cisco detailed Multicast explanation] | ||
Revision as of 06:53, 22 October 2005
Multicast is one of three ways you can use the IP protocol.
With multicast one computer sends traffic to a special IP address. Other people can then choose to register to this IP address and then receive the traffic. It's advantage is that the server can send a single datastream, and then an endless number of clients can receive this data. This avoids having to send the same data on a single network connection. (The negotiation process to setup this connection is called the IGMP protocol.)
Multicast is not always supported. Your OS needs to know how to handle it (Windows, MacOSX, and the Linux kernel do). And you need suitable network equipment (routers, switches etc.). Also you can only do multicast on internet if your ISP is connected to the MBONE. Only a limited amount of end users can receive multicast from the internet most of them would be universities and research centers.
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However most LAN's can easily support Multicast. Beware that if your switch or routers don't support it, some types of network equipment actually broadcast the traffic. This might be a very undesirable behaviour.
See Also: Cisco detailed Multicast explanation
