Re: Comcast blocking p2p uploads

[Andy Davidson <andy () nosignal org>]

On 21 Oct 2007, at 01:27, Leo Bicknell wrote:

> But back the the original premise.  If say, Linux is being distributed
> both from a central web site, and via P2P:
> 1) Central web site.  All but the one ISP with the web site will
>    have the traffic going over peering or worse transit, and will
>    often be carrying them thousands of miles from the central point.
> 2) P2P.  Has a good chance at least some seeders will be on the same
>    network, avoiding peering and transits for some fraction of the
>    traffic.  Has a good chance the seeders are closer to the user
>    than the web site, perhaps even on the same cable segment.

In the UK at least, option 1) is financially more favourable for  
ISPs, since the data flow is
       vendor -> transit -> last mile -> end user,
rather than
       end user -> last mile -> last mile -> end user.

The last mile is where all the costs are.

Andy