http://www.eit.com/techinfo/mbone/what-is-mbone.html

John Kempson (ch0jwkt@ge1vm.schdy.ge.com)
Thu, 08 Jun 95 09:28:04 0000


The 'What is MBONE' page
For those that don't have WWW access -- or just don't want to bother

John Kempson
ch0jwkt@ge1vm.schdy.ge.com

>
>
> What is the MBONE?
>
> MBONE stands for the Virtual Internet Backbone for Multicast IP.
> IP-Multicast is the class-D addressing scheme in IP implemented by
> Steve Deering at Xerox PARC. It was adopted at the IETF March 1992
> meeting and acquired the name MBONE after the July 1992 IETF
> meeting.
>
> The first multicast tunnel was established between BBN and stanford
> University in the summer of 1988. Tunneling was originally meant
> just as a short term hack until the core routers knew about IP
> multicasting. Here is an original public email contributed by David
> Waitzman (djw@bbn.com) that captures the moment.
>
> IP Multicast-based routing facilitates distributed applications to
> achieve time-critical "real-time" communications over wide area IP
> networks through a lightweight, highly threaded model of
> communication. The IP Multicast routers (referred to as "mrouters")
> take the responsility of distributing and replicating the multicast
> data stream to their destinations as opposed to individual IP hosts.
> The MBone topology of mrouters is designed in such a manner that it
> facilitates "efficient" distribution of packets without congesting
> any node inappropriately.
>
> RFC-1112 fully describes the details. More details are available in
> the references section of this guide.
>
> Several MBONE topology maps are available at
> ftp://ftp.isi.edu/mbone/:
>
> * Topology map, PostScript version
> * Topology map, GIF image
> * Topology map, Small GIF image
>
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> Last Modified 3/10/95
> Created by Vinay Kumar, vinay@eit.com