US9252963B2
патент
An overlay protocol and system for allowing multicast rout ing in the Internetto be performed at the application level. The overlay protocol uses “native' Internet multicast and multi cast routing protocols to route information, according to over lay routing tables. Overlay groups are mapped to native mul ticast groups to exploit native multicasting in regional or local forwarding domains. Use of the overlay protocol allows over lay distribution to be handled in a more intelligent and band
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