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Mbone
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==Details== The purpose of Mbone was to minimize the amount of data required for multipoint audio/video-conferencing.<ref name="nyt95" /> Mbone was free and it used a network of routers that support IP multicast, and it enables access to real-time interactive multimedia on the Internet. Many older routers do not support [[IP multicast]]. To cope with this, [[Tunneling protocol|tunnels]] must be set up on both ends: multicast packets are encapsulated in unicast packets and sent through a tunnel. Mbone uses a small subset of the [[Classful network#Classes|class D IP address space]] (224.0.0.0β239.255.255.255) assigned for [[Multicast address|multicast traffic]]. Mbone uses 224.2.0.0 for multimedia conferencing.{{Citation needed|date=December 2017}} ===Characteristics=== * [[Network topology|topology]]: a combination of [[Mesh network|mesh]] and [[Star network|star]] networks * [[IP address]]es: 224.2.0.0 * routing schemes: [[Distance Vector Multicast Routing Protocol|DVMRP]], [[Multicast Open Shortest Path First|MOSPF]] * [[session registration]]: [[Internet Group Management Protocol|IGMP]] * traffic requirement: audio 32-64 kbit/s, video 120 kbit/s ===Mbone tools=== * [[Videoconferencing]]: vic -t ttl destination-host/port (supports: NV, [[H.261]], [[CellB]], [[MPEG]], [[mJPEG]]) * [[Audioconferencing]]: vat -t ttl destination-host/port (supports: [[Linear predictive coding|LPC]], [[PCMU]], [[DVI4]], [[GSM]]) * [[Whiteboard]]: wb destination-host/port/ttl * [[Session Directory]]: sdr * Collective art : gp ([[Poietic Generator]])
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