Re: PCH Peering Paper

[Owen DeLong <owen () delong com>]

This assumes that there are no cooperatives providing settlement free peering which includes both peer and transit 
routes.

Owen

> On Feb 17, 2016, at 14:09 , Bill Woodcock <woody () pch net> wrote:
>
> Each bit traverses only one peering session, however, at the "top of its trajectory" to use a physical metaphor. The 
> uphill and downhill sides are all transit.
>
>
>                -Bill
>
>
> > On Feb 17, 2016, at 14:06, Owen DeLong <owen () delong com> wrote:
> >
> >
> > > The premise above therefore devolves to: Since most of the traffic is to those networks, then most of the bits flow 
> > > over contracted peerings.
> > >
> > > Perhaps “most” can be argued, but obviously a significant portion of all peering bits flow over contracted 
> > > sessions. Hopefully we can all agree on that.
> >
> > There’s greater complexity here, however…
> >
> > Many of the bits that flow flow over several networks between their source and destination. Likely the vast majority 
> > of bits traverse at least 3 autonomous systems in the process.
> >
> > So when you want to count traffic that went over a non-contract peering session vs. traffic that went over a 
> > contract peering session, how do you count traffic that traverses some of each?
> >
> > Owen