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Page 92
It is noted that a multicast group is defined by the IP address, which must be
any address included in the 224.0.0.0 /4 range
.
The request to join to a multicast group is performed just entering the multicast
IP address into the dial menu of Encoder or Decoder (according whether the
audio stream must be streamed out from or decoded on this codec).
The multicast operation can be shown in the following diagram:
Multicast considerations:
Internet Protocol (IP) multicast is a bandwidth-conserving
technology that reduces traffic by simultaneously delivering a single
stream of information to thousands of corporate recipients and
homes.
Multicast is based on the concept of a group. An arbitrary group of
receivers expresses an interest in receiving a particular data
stream. This group does not have any physical or geographical
boundary—the hosts can be located anywhere. Hosts that are
interested in receiving data flowing to a particular group must join
the group using IGMP. All this is done automatically by Prodys IP
Family codec when establishing a connection.
Multicast traffic is rejected by the Internet infrastructure, since
most IP servers on the Internet do not currently support the
multicasting part of the protocol, except when using VPNs, because
Summary of Contents for IP Family
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