Source : Free On-Line Dictionary of Computing

simple multicast protocol
     
         A proposed {mulitcast} {protocol}
        that would ease the requirements for {IP} Multicast, such as
        no longer mandating that routers be able to calculate the
        source of a multicast stream.  This has not been adopted by
        the {IETF}.
     
        {(http://www.infoworld.com/cgi-bin/displayStory.pl?981125.whmulti.htm)}.
     
        [Reference?]
     
        (2001-07-02)