| masraum |
02-08-2011 03:56 PM |
Quote:
Originally Posted by Steve Viegas
(Post 5834871)
They are running out of addresses. IPv6 will be necessary starting later this year it appears, but it should not affect the average person I believe.
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Quote:
Originally Posted by Scott R
(Post 5834916)
Been running out since 1997. Will be a long time before the average ISP upgrades to v6. 4,294,967,296 (2^32) total IPV4 addresses, will be a while.
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Yep, there are still a bunch floating around, but you've also got a ton of new stuff getting on the net every day. A big one is cell phones, then there's stuff like video cameras, alarms, heck, potentially even home thermostats. I don't expect us to actually run out in the next month or two, but I suspect it's not as far away as we'd like to think.
ICANN assigns its last IPv4 addresses
Quote:
The Internet Assigned Numbers Authority (IANA) has handed out its last IPv4 addresses, leaving the remaining blocks to regional registries that in some cases may exhaust them within a few months.
The end of IPv4 (Internet Protocol version 4) addresses was announced in a ceremony in Miami on Thursday morning. Each of the five Regional Internet Registries (RIRs) was allocated one of the final five large blocks of about 16 million addresses.
The end of the central supply of IPv4 addresses signaled the urgency of enterprises and service providers to migrate to IPv6, the latest version of the protocol, which has been available for more than a decade and allows for an almost unlimited number of addresses. When there are no more IPv4 addresses available from the RIRs, new hosts on the Internet will not be able to communicate with systems that use only IPv4
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Quote:
Originally Posted by Porsche-O-Phile
(Post 5835089)
How does all this work? Do they add another group (xxx.xxx.xxx.xxx.xxx) to get more combinations or what? Currently the addressing is xxx.xxx.xxx.xxx where xxx is a number between 0-255. This should be 255^4 or 4,294,967,296 combinations possible. How do they get more exactly?
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Right, the current address scheme covers 0.0.0.0 through 255.255.255.255. Some of the range is not actually usable on the net. For instance, the two that I listed above that bound the range are not usable. Also, anything that starts with a 10.x.x.x is not usable on the net as well as 172.16.x.x - 172.31.x.x and 192.168.x.x. Also, nothing from 224.x.x.x up to 255.x.x.x. All of those are reserved for special applications or circumstances.
The new IPv6 stuff is very different.
IPv6 - Wikipedia, the free encyclopedia
Quote:
While IPv4 allows 32 bits for an Internet Protocol address, and can therefore support 232 (4,294,967,296) addresses, IPv6 uses a 128-bit address and the new address space supports 2128 (340 undecillion or 3.4×1038
) addresses.
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Here's what the new addresses will look like.
2001:0db8:85a3:0000:0000:8a2e:0370:7334
You can drop leading "0" or, if as in the case above, there are groups that are all "0" then you can omit them altogether (keeping the colons).
Each character can be any of the hexadecimal characters 0-9 and a-f.
In my job, I'm primarily concerned with IP addresses. What I do is essentially to make sure that they can get where they need to go, or not get where they aren't supposed to go. I often have a bunch of them memorized and/or can look at them and gain valuable knowledge about the device or where it is based on all or parts of the address. I'm not looking forward to IPv6. I guess I need to start studying up. I'm sure it won't be that long before knowledge of IPv6 will be valuable for me.
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