On 01/31/2014 01:02 PM, Alexandru Petrescu wrote: >>> Speaking of scalability - is there any link layer (e.g. Ethernet) that >>> supports 2^64 nodes in the same link? Any deployed such link? I >>> doubt so. >> Scan Google's IPv6 address space, and you'll find one. (scan6 of >> <http://www.si6networks.com/tools/ipv6toolkit> is your friend :-) ) > > Do you think they have somewhere one single link on which 2^64 nodes > connect simultaneously? (2^64 is a relatively large number, larger than > the current Internet). > > Or is it some fake reply?
Apparently, it's not fake (although I didn't scan the *whole* space). I bet there's some trick there, though. -- I don't expect them to be running 2**64 servers... With a little bit more of research, it shouldn't be hard to check whether the responses are legitimate or not (TCP timestamps, IP IDs, etc. are usually your friends here). Thanks, -- Fernando Gont SI6 Networks e-mail: fg...@si6networks.com PGP Fingerprint: 6666 31C6 D484 63B2 8FB1 E3C4 AE25 0D55 1D4E 7492