RFC 1112:Host Extensions for IP Multicasting
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multicasting


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... of the Internet Protocol (IP) to support multicasting. It is the recommended standard for IP multicasting in the Internet ...
... IP) to support multicasting. It is the recommended standard for IP multicasting in the Internet. Distribution of this memo is unlimited. ...


... IP multicasting is the transmission of an IP datagram to a "host ...
... host IP implementation to support IP multicasting, where a "host" is any internet ...
... separate documents. This memo also does not specify how local network multicasting is accomplished for all types of network, although it does specify the required service interface ...


... >Level 0: no support for IP multicasting. ...
... requirement that all IP implementations support IP multicasting. Level 0 hosts will, in general, be unaffected by multicast ...
... destination address field; they should be quietly discarded by hosts that do not support IP multicasting. Class D addresses ...
... Level 2: full support for IP multicasting. ...


... To provide level 1 multicasting, a host IP implementation must ...
... multicast IP datagrams. To provide level 2 multicasting, a host must also support the reception of multicast ...


... Other networks that directly support multicasting, such as rings or buses conforming to the IEEE 802.2 standard, may be handled the same ...


... IP. It is required to be implemented by all hosts conforming to level 2 of the IP multicasting specification. IGMP messages are encapsulated ...


... This appendix is not part of the IP multicasting specification, but provides background discussion of several issues related to IP ...



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