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Nov 7, 1999 2:00 AM
`
`2/9/2017
`Google Groups
`
`Seminar - Francis - Nov 9 10am - Y'allcast architecture - Google Groups
`
`Seminar ­ Francis ­ Nov 9 10am ­ Y'allcast architecture
`
`b...@isi.edu
`Posted in group: la.seminars
`
`From: Clifford Neuman <b...@ISI.EDU>
`
`                  USC/ISI Networking Seminar Series
`
`       Yallcast: Extending the Internet Multicast Architecture
`
`                           Dr. Paul Francis 
`                    Tuesday, Nov 9th, 1999 at 10am 
`                    Hosted by: Dr. Deborah Estrin
`
`                   11th floor Large Conference Room 
`                  USC/Information Sciences Institute 
`                          4676 Admiralty Way 
`                          Marina del Rey, CA
`
`                  http://www.isi.edu for directions
`
`If we take a broad view of the term ``multicast'' to mean any 
`distribution of content to more than one machine, we find that
`multicast is proceeding along two distinct architectural tracks. On 
`one track is IP multicast, which mainly targets realtime non­reliable 
`applications, but for which hopes run high for reliable applications 
`as well. On the other are a plethora of open or proprietary host­ or 
`server­based approaches, each typically targeting a specific 
`application or product line.
`
`IP multicast suffers from a number of technical problems, lacks 
`applications, and in general is having trouble reaching critical mass, 
`especially regarding anything resembling a global infrastructure. 
`Server­based approaches are valuable and wide­spread, but there is no 
`synergy in terms of multiple distinct groups working within the same 
`architecture. As a result, progress is not as fast as it could be, and 
`consumers are strapped with multiple application­specific 
`infrastructures to deal with.
`
`This talk presents an architecture, called yallcast, that aims to 
`unify both tracks under a single umbrella architecture. Yallcast 
`attempts to take the best from both tracks­­reliable and asynchronous 
`distribution from the server­based track, and dynamic 
`auto­configuration via a simple API from the IP multicast track.
`
`A key component of yallcast is that it allows a group of endhosts (the 
`hosts where the content­consuming application resides) to 
`auto­configure themselves into a tunneled topology for the purpose of 
`content distribution.  Yallcast can run over IP multicast, but does 
`not require it. This allows application developers to bundle yallcast 
`into their applications, giving their applications robust and scalable 
`configuration­free out­of­the­box multicast. This is key to the 
`initial acceptance of yallcast and for allowing it to reach critical 
`mass.
`
`https://groups.google.com/forum/print/msg/la.seminars/R9rUO8QVhT8/4fDFDJ1HGr4J?ctz=3739572_80_80_104160_76_446820
`
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`BUNGIE - EXHIBIT 1014
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`

`

`Seminar - Francis - Nov 9 10am - Y'allcast architecture - Google Groups
`2/9/2017
`Yallcast is not limited, however, to endhost­based distribution. It 
`can also work in infrastructure servers (boxes that receive, 
`replicate, and forward content but that are not consumers of the 
`content). This allows improved performance for applications that 
`require it. It can also provide other benefits such as better 
`security. The endhost­ and server­based modes of operation taken 
`together, along with yallcast's ability to utilize local islands of IP 
`multicast, allow yallcast to support the broadest possible range of 
`applications.
`
`­­­­
`
`On­line information about the ISI Network Seminars is available at
`
`http://www.isi.edu/divisions/div7/networking_seminar.html
`
`https://groups.google.com/forum/print/msg/la.seminars/R9rUO8QVhT8/4fDFDJ1HGr4J?ctz=3739572_80_80_104160_76_446820
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