One of the crucial mechanisms powering the Internet got a giant, years-in-the-making overhaul on Wednesday.When say "giant," not kidding. Silly-sounding huge number alert:
The Internet's address book grew from "just" 4.3 billion unique
addresses to 340 undecillion (that's 340 trillion trillion trillion).
That's a growth factor of 79 octillion (billion billion billion).
If it all goes right, you won't notice a thing. And that's the point.The Internet is running out of addresses, and if nothing were done, you certainly would notice. New devices simply wouldn't be able to connect.
To prevent that from happening, the Internet Society, a global standards-setting organization with headquarters
in Geneva, Switzerland; and Reston, Va., has been working for years to
launch a new Internet Protocol (IP) standard called IPv6.
IP is a global communications standard used for linking connected
devices together. Every networked device -- your PC, smartphone, laptop,
tablet and other gizmos -- needs a unique IP address.With IPv6,
there are now enough IP combinations for everyone in the world to have a
billion billion IP addresses for every second of their life.
That sounds unimaginably vast, but it's necessary, because the number of connected devices is exploding. By 2016, Cisco (CSCO, Fortune 500)
predicts there will be three networked devices per person on earth.
We're not just talking about your smartphone and tablet; your washing machine, wristwatch and car will be connected too. Each of those connected things needs an IP address.
Then
there's all the items that won't necessarily connect to the Internet
themselves, but will be communicating with other wired gadgets.
Developers are putting chips into eyeglasses, clothes and pill bottles.
Each one of those items needs an IP address as well.
The current
IP standard, IPv4, was structured like this: xxx.xxx.xxx.xxx, with each
"xxx" able to go from 0 to 255. IPv6 expands that so each "x" can be a 0
through 9 or "a" through "f," and it's structured like this:
xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx. (Yes, there was an IPv5, but it
was a streaming multimedia standard developed in the late 1970s that
never really caught on).
The changeover is akin to when the U.S.
telephone system handled soaring growth by increasing the digits in each
telephone number -- except for one crucial difference. While the entire
telephone system was upgraded in the 1990s, the Internet will be
upgraded gradually.IPv4 will continue to exist alongside IPv6 for
quite some time, just as digital and analog TV were broadcast
side-by-side for years.
Most of the major websites and networks are already participating. More than 2,000 websites, including Google (GOOG, Fortune 500), Facebook (FB), Bing, Yahoo (YHOO, Fortune 500), AOL (AOL) and Netflix (NFLX), as well as a number of network operators such as AT&T (T, Fortune 500), Verizon (VZ, Fortune 500), Comcast (CMCSA) and Time Warner Cable (TWC, Fortune 500), have begun enabling IPv6.
But they'll all need to continue to support IPv4 until the entire world upgrades. That will take years.
@CNNMoneyTech
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Friday, June 15, 2012
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