Thanks for all the comments. Through the entire thread on-line and
off-line only one person contributed an estimate
Patrick Gilmore said:
All that said: My back-of-the-envelope math says the Internet is order
of 1 exabyte/day, as defined by my own rules on what counts as "the
Internet"[*]. I could easily be wrong, but you asked.
[*] I count Company-to-Company traffic. This is _mostly_ inter-AS
traffic, but on-net nodes (e.g. Akamai, Google, NF) -> Provider _do_
count. Things like Google -> Google over Google backbone do not count.
Things like as701 -> as702 would count, but not as701 -> as701, even if
the traffic is between two single-homed customers. It is a weird
definition, but that's how I define it. (Although I may be biased,
since counting only inter-AS traffic leaves off $SOME_PERCENTAGE of the
traffic from my company.)
Since there weren't any other estimates to choose between, looks like
I'll go with Gilmore's number. Gilmore's estimate was signifcantly lower
than Cisco's VNI.
