If we try to comprehend the Internet in terms of number of boxes that can reach from their local networks to globally routable destinations, we have to take into account Multi- NATed , multi-tunneled (ipv6 over ipv4 in a VPLS , and other crazy scenarios such v6 over v4 in a VPLS running over VXLANs : is that even realistic ? ) overlay networking environments. So also the overlays formed to talk to sensors who can understand say TM/TC ( Telemetry/Tele-commands).
In terms of the Address space , the problem statement shows more convergence. Regards, -Jay Sent from my iPhone On Aug 14, 2013, at 10:06 AM, bmann...@vacation.karoshi.com wrote: > On Wed, Aug 14, 2013 at 10:32:13AM -0400, Sean Donelan wrote: >> >> Researchers have complained for years about the lack of good >> statistics about the internet for a couple fo decades, since the >> end of NSFNET statistics. >> >> What are the current estimates about the size of the Internet, all IP >> networks including managed IP and private IP, and all telecommunications >> including analog voice, video, sensor data, etc? >> >> CAIDA, ITU, Telegeography and some vendors like Cisco have released >> forecasts and estimates. There are occasional pieces of information >> stated by companies in their investor documents (SEC 10-K, etc). > > thats easy... the number of allocated IPv4 /32s and the > number of allocated IPv6 /64s. By definition, private > networks (RFC 1918) space is not part of the Internet. > > Or, is your question actually the absolute number of globally > reachable IP addresses at any given instant? (reachable from where?) > > Or do you mean anything that might have an IP address associated with > it at some time in its existance? > > Clarity would be helpful if you want a repeatable answer. > > /bill > >
