nanog mailing list archives

Re: How big is the Internet?


From: Warren Bailey <wbailey () satelliteintelligencegroup com>
Date: Thu, 15 Aug 2013 20:44:46 +0000

Is internal DNS considered to be in the same realm? I agree with you, but
I'm not totally sure there is a straight forward answer here.

Device connected to internet, sends query (same as would be over the
internet) to local DNS service. Is that an Internet transaction?

On 8/15/13 1:10 PM, "Leo Bicknell" <bicknell () ufp org> wrote:


On Aug 15, 2013, at 1:27 PM, Patrick W. Gilmore <patrick () ianai net> wrote:

My laptop at home is an edge node under the definition above, despite
being behind a NAT. My home NAS is as well. When I back up my laptop to
my NAS over my home network, that traffic would be counted as "Internet"
traffic by your definition.

I have a feeling that does not come close to matching the mental model
most people have in their head of "Internet traffic". But maybe I'm
confused.

It matches my mental model.  Your network is connected to the Internet,
that's traffic between two hosts, it's Internet traffic.

Let's take the same two machines, but I own one and you own one, and
let's put them on the same network behind a NAT just like your home, but
at a coffee shop.  Rather than backups we're both running bit torrent and
our two machines exchange data.

That's Internet traffic, isn't it?  Two unrelated people talking over the
network?  They just happen to be on the same LAN.

My definition was arbitrary, so feel free to argue another arbitrary
definition is more useful in some way, but for my arbitrary definition
you've applied the rules correct, and I would argue it's the right way to
think about things.  In a broad english sense "IP packets traversing an
Internet connected network are Internet traffic".

It's all graph cross sections.  "Peering" volume totals a set of
particular links in the graph, omitting traffic from your laptop to your
file server, or your NAS to your laptop.  My model attempts to isolate
every edge on the graph, and generate the total sum of IP traffic
crossing any Internet connected network, which would always include all
forms of local caches (Akamai, Google, Netflix) and even your NAT.  I
think that's a more interesting number, and a number that's easier to
count and defend than say a peering or "backbone" number.

-- 
      Leo Bicknell - bicknell () ufp org - CCIE 3440
       PGP keys at http://www.ufp.org/~bicknell/









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