Internet diameter?

Ignacio de castro ignactro at
Thu Nov 22 19:48:46 UTC 2018

It is indeed hard to say how useful is to know hop counts when a large
fraction of IXP member are remote and plenty of content is cached, but that
question was bugging me too and I have been looking into it. From what we
could see, pretty stable around 5 hops.

Disclaimer this is  an ongoing work. Feedback welcome!

On Thu, Nov 22, 2018 at 7:33 PM Keith Medcalf <kmedcalf at> wrote:

> >> I'd argue that's just content (though admittedly a lot of it).
> "just static content" would be more accurate ...
> >I would further argue that you can't cache active Web content, like
> >bank account statements, utility billing, help desk request/responses,
> >equipment status, and other things that change constantly.
> There were many attempts at this by Johhny-cum-lately ISPs back in the
> 90's -- particularly Telco and Cableco's -- with their "transparent
> poxies".  Eventually they discovered that it was more cost efficient to
> actually provide the customer with what the customer had purchased.
> ---
> The fact that there's a Highway to Hell but only a Stairway to Heaven says
> a lot about anticipated traffic volume.
> >-----Original Message-----
> >From: NANOG [mailto:nanog-bounces at] On Behalf Of Stephen
> >Satchell
> >Sent: Wednesday, 21 November, 2018 20:45
> >To: nanog at
> >Subject: Re: Internet diameter?
> >
> >On 11/21/2018 07:32 PM, Ross Tajvar wrote:
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