Models & Scenarios

["Phil Rzewski" <philr@inktomi.com>]

Hi team. I just wanted to send along this companion message a background 
the changes I've made to the Models & Scenarios documents.

The overall goal is to "float a balloon" of some high-level ideas we've 
seemed to have rough consensus on since the last BOF meeting. The first of 
these was trying to generalize from "CDNs" and "CDN Peering" to "Content 
Networks" and "Content Internetworking". Other than just a change in 
wording, this also implies some change in scope.

For example, in the Models document, I added some sections showing 
historical types of "Content Networks", such as hierarchical caching and 
server farms. In the Scenarios document, this meant naming some specific 
traits/refinements of certain peer-worthy Content Networks, some of which 
I've given names to like "Access Content Networks", "Publishing Content 
Networks", and "Brokering Content Networks". While I got some preliminary 
support from some folks on this approach, I'm curious to see how it's 
received by the wider audience. I have historically seen two approaches: 1) 
Think of everything as a CDN, think of refined cases as degenerate cases of 
CDNs, and 2) Cite existing examples that don't look much like what's called 
a CDN today and call them out by name. So this is a stab at the latter.

By the way, when you read Scenarios, you'll notice that despite the reading 
off of ACN/PCN/BCN, they aren't woven into the actual scenarios in section 
3 yet. I figured I'd leave that stuff undone until I at least get consensus 
behind the approach in section 2.

You'll also notice that, while "internetworking" is used in place of 
"peering" in a lot of places, it's not a 100% migration. When I got up to 
section 6 in Models, I could see that the word "peering" is deeply woven 
into our vocabulary, and saying "Accounting Internetworking Gateway" is 
just a mouthful of marbles, so I drew the line there. :)

So anyway, feel free to comment now or in Minneapolis. Thanks.

--
Phil Rzewski - Senior Architect - Inktomi Corporation
650-653-2487 (office) - 650-303-3790 (cell) - 650-653-1848 (fax)