Internet
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... This memo specifies the extensions required of a host implementation
of the Internet Protocol (IP) to support multicasting. It is the
...
... multicasting. It is the
recommended standard for IP multicasting in the Internet.
Distribution of this memo is unlimited.
...
... "multicast routers" which may be co-resident with, or separate from,
internet gateways. A host transmits an IP multicast ...
... IP multicasting, where a "host" is any
internet host or gateway other than those acting as multicast
routers ...
... host groups. It requires implementation of the
Internet Group Management Protocol (IGMP) and extension of the IP and
...
... APPENDIX I. INTERNET GROUP MANAGEMENT PROTOCOL (IGMP) ...