IP Multicast - Download as PowerPoint

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					XCAST
eXplicit Multi-Unicast
                 Yuji IMAI (UG)
          xcast-fan-club/WIDE XCAST WG
                Eiichi Muramoto
            Panasonic/WIDE XCAST WG
Advantages
   XCAST can be delivered using only
    unicast routing information.
   No need for
     a multicast specific routing protocol
     maintaining multicast status on intermediate
      routers
     group address allocation

     sender location advertisement

   Unlimited Scalability with respect to the
    number of groups
Advantages(Cont’d)
   Explicit end-to-end control of
    multicast group membership.
       Senders can start transmission anytime
        without any preparation (MLD, IGMP, PIM...).
           With existing multicast, receiver must join before
            transmission.
       Sender can change the group membership
        (destinations) per packet basis.
           With existing multicast schemes, membership
            change is done by join/prune process, a complex
            process.
Implementations

   XCAST fan club/WIDE project/FUJITSU Lab.
       OS: NetBSD 3.0, FreeBSD 4.6.2
       VIC (Video Conference) & RAT (Robust Audio Tool)
       http://sourceforge.net/projects/xcast6
   XCAST fan club/ETRI/Soongsil University
       OS: Linux 2.6.x
       VIC & RAT
       http://sourceforge.net/projects/xcast-linux

				
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posted:10/1/2012
language:Latin
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