MBONE

• MBONE - Multicast backBONE

• MBONE is a virtual network built on top of the Internet; The purpose of MBONE is to minimize amount of data required for multipoint audio / video-conferencing

• MBONE is free; it uses network of mrouters that can support multicast

• Many older routers do not support multicast; to avoid this we must set up tunnels on both ends; multicast packets are encapsulated in unicast packets and sent through a tunnel;

• MBONE uses a small subset of 224.0.0.0 - 239.255.255.255 MBONE uses 224.2.0.0 for multimedia conferencing

• MARILYN: mrouted, /etc/mrouted.conf

  • tunnel 128.230.162.18 207.41.200.99 metric 1 threshold 64

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