IP address
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... group has a
well-known, administratively assigned IP address. It is the address,
not the membership of the group ...
... datagrams can easily be identified by the presence of a class D IP
address in their destination address field; they should be quietly
discarded by hosts ...
... Host groups are identified by class D IP addresses, i.e., those with
"1110" as their high-order four bits. Class ...
... "1110" as their high-order four bits. Class E IP addresses, i.e.,
those with "1111" as their high-order four bits, are reserved for
...
... network. There is no multicast address (or any other IP address) for
all hosts on the total Internet ...
... IGMP are considered to be implemented within
the IP module, and the mapping of IP addresses to local network
addresses ...
... host group address, rather than an individual
IP address, as the destination. However, a number of extensions may
be necessary or desirable.
...
... multicast address
by placing the low-order 23-bits of the IP address into the low-order
23 bits of the Ethernet ...
... on the protocol field in the IP header, regardless of the destination
IP address. However, before any datagrams destined to a particular
group ...
... pseudo-random number generator to compute the
reporting delays, one of the host's own individual IP address should
be used as part of the seed for the generator, to reduce the chance
of multiple hosts ...