Mbone is currently of practical use for shared communication such as Videoconference s or shared collaborative workspaces. It is not generally connected to Internet Service Providers , but often to universities and research institutions. Some other projects and network testbeds, such as Internet2 's Abilene Network , have made Mbone obsolete.
- MBONE is a Virtual Network built on top of the Internet; Invented by Van Jacobson and Steve Casner in 1992. 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 IP Multicast; enables access to real-time interactive multimedia on the Internet
- Many older routers do not support IP 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 assigned for Multicast Traffic . MBONE uses 224.2.0.0 for multimedia conferencing
- Characteristics:
- --- and Star
- --- , MOSPF
- --- session registration: IGMP protocol
- --- traffic requirement: audio 32-64 kbit/s, video 120 kbit/s
- Multicast
- CastGate - an attempt at providing connectivity to the multicast network for hosts which have none
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