Le 14/05/2010 18:37, Darren New nous fit lire :
> Invisible wrote:
>> IP is different. It's designed to work for large networks.
> 
> And SONET and ATM and X.25 and ISDN aren't?  Do you even know what those
> networks are?

I'm feeling fear... I know them all...
SDH should be cited with SONET if you go that way!


IP is not designed for large networks of today.
It has been designed for hierarchy of networks.
Getting ride of classes was just one way to avoid doomsday for a time.
Address allocation was always done by delegation along the hierarchical
path...
Then came NAT... but it won't stand long either.

>> Sure, you don't usually talk to them directly; usually you use one of
>> the IP addresses from the block assigned to your ISP.
> 
> Ding ding! Guess what? They aren't assigned centrally. Your ISP assined
> you yours, mine assigned me mine.
> 
Rejoice, the end of IPv4 addresses is coming... less than 1 year of
available blocs for some continents... 2 years for the lucky ones!

Get your visa & mastercard ready to pay for a routable ipv4 if ipv6 does
not happens transparently for joe-user and you want a public server!

>> But my point is,
>> you can't just pick a random number out of the air and try to use that
>> as your IP address. It won't work.
> 
> That's a different statement from "they're assigned centrally."
> 
> And yes, actually, you can. You'll break other people, but it'll work if
> you do it right.
> 

What is worst with IP: every interface of a system need one, not the
system itself, but every interface! You do not try to reach a system,
but a door to that system... and the same door number can be reused by
others... lame!

Post a reply to this message