But [there was] nothing live until we set up the Mbone (the first tunnel was from UCL to Berkeley in about 1987) with Steve Deering's code.
There was a big event (I can't put a date on it), when a Rolling Stones concert was streamed over the Mbone, and Sky News came and filmed us watching it at UCL.
I can't give priority date to the Global Schoolhouse's use of CU-SeeMe versus the Mbone; as far as I know, CU-SeeMe as a tool predates the Mbone tools, but had very limited use (it was Apple Mac only, and few sites had the bandwidth), and the big Global Schoolhouse lashup involved the kids all coming to university host sites to get fast enough links.
Given the packet size used and the range of packet loss rates that can occur on the Mbone, receiver-only mechanisms--such as packet repetition--cannot repair speech successfully .
The loss characteristics over the Mbone vary; a reasonable working assumption is that packet loss follows a random pattern.
The MBONE is one that most academicians use, but few corporations support due to lack of experience with multicast and the past lack of tools for PCs.(6) Jim Gemmell spoke from California to a conference in France using the MBONE tools over IP multicast.
Held in San Jose last month, Precept multicast the conference live on the Internet MBONE. Microsoft and VXtreme captured the conference for on-demand and CD publication.
Mmphone EIT's collaboration software that makes the Mbone
tools accessible via the Web.
MBone has also (in)directly been the cause of severe problems in the NSFnet backbone, saturation of major international links rendering them useless as well as sites being completely disconnected due to Internet Connection Management Protocol (ICMP) responses flooding the networks.
When we talk about MBone we sometimes mean the virtual network that implements multicasting, sometimes we refer to the applications that run on top of MBone (vat, nv, ivs, for example), and often we mean everything.
The MBone is layered on top of the Internet's unicast topology.
Not only does this enable more of the Internet's routers to route multicasts without tunneling, it also allows Autonomous Systems running MOSPF to become part of the MBone. Using MOSPF instead of DVMRP in parts of the Internet has the following advantages: