[Nanog] Lies, Damned Lies, and Statistics [Was: Re: ATT VP: Internet to hit capacity by 2010]
mmc at internode.com.au
Tue Apr 22 08:12:57 CDT 2008
michael.dillon at bt.com wrote:
> You need a way to insert non-technical
> information about the network into the decision-making process.
> The only way for this to work is to allow the network operator
> to have a role in every P2P transaction. And to do that you need
> a middlebox that sits in the ISP network which they can configure.
You could probably do this with a variant of DNS. Use an Anycast
address common to everyone to solve the discovery problem. Client
sends a DNS request for a TXT record for, as an example,
188.8.131.52.p2ptopology.org. The topology box looks at the IP
address that the request came from and does some magic based on the
requested information and returns a ranking score based on that (maybe
0-255 worse to best) that the client can then use to rank where it
downloads from. (might have to run DNS on another port so that normal
resolvers don't capture this).
The great thing is that you can use it for other things.
Matthew Moyle-Croft - Internode/Agile - Networks
Level 5, 150 Grenfell Street, Adelaide, SA 5000 Australia
Email: mmc at internode.com.au Web: http://www.on.net
Direct: +61-8-8228-2909 Mobile: +61-419-900-366
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