http://ns.uoregon.edu/~meyer/Talks/IETFDALLAS95/isp-strategies.html

   *  Some Issues in Fielding Native Multicast

        o  Protect Core Business (unicast forwarding)

        o  RPF over Multipaths (n x T1)

        o  Administrative Control
             +  What does it cost to field a RP?
             +  Who Can Use My RP?

        o  11.0 Stability

        o  Attaching to Global MBONE

   *  Result: Unicast Toplogy !== Multicast Topology
        o  Traditional Solution: Mrouter Configuration
        o  Consider Mangement...

   *  Alternative: Start with Simple Native Configuration
        o  GRE+DVMRP Unicast Routing+Sparse Mode