Description: from Internet network development pace, a multicast is the old concept is not a new concept. it for a variety of reasons development has been relatively slow. IP Multicast in the concept first appeared in 1988 in Steve deering doctoral dissertation, In 1989 Steve deering to standard IP network layer protocol for the expansion, IP Multicast the norms; March 1992 to establish the first collected from MBone was Multicast Backbone Network, IETF and successful in online multicast held a meeting before aroused extensive attention. While a WWW browser appeared in 1990.
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