[ih] invention of multicast addressing
jeanjour at comcast.net
Fri May 7 10:54:54 PDT 2010
What about Yogen Dalal's PhD thesis? The first (that I know of)
distributed spanning tree algorithms for multicast? When I get home,
I will check to see but I may be able to point to some mid- to late-
70s discussions of it. Although the title of Yogen's thesis says
broadcast, I remember it as multicast, i.e. less than all!
But you may be on to something with the Irvine ring?
At 13:20 -0400 2010/05/07, Craig Partridge wrote:
>I'm trying to nail down when the concept of a "multicast address" came about
>(just a little citation in a larger paper I'm writing).
>In 1976 in the original Ethernet paper, there was unicast and broadcast.
>In 1978, in their survey of local networks, Clark, Pogran and Reed mention
>in passing that Mockapetris is playing around with bit wildcarding that
>permits multiple addressees using one address.
>In the 1980 Ethernet specification there are Ethernet multicast
>addresses as we
>know them today.
>Digging a bit deeper from references in later papers, it appears that
>Mockapetris, Lyle and Farber may have proposed a form of multicasting in 1977
>(IFIP Congress paper of August 1977 that I don't have).
>That suggests that someone saw the Mockapetris-Lyle-Farber idea, simplified it
>and put it into the 1980 Ethernet standard (where it sat unused for several
>years...). But I can find no trail... Anyone got insights?
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