Comments on: IPv6, the iPod and the Earth http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/ Internet Corporation for Assigned Names and Numbers Wed, 08 Feb 2012 01:42:27 -0800 hourly 1 http://wordpress.org/?v=3.3.1 By: iPod http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2503 iPod Tue, 21 Aug 2007 19:10:26 +0000 http://blog.icann.org/?p=139#comment-2503 This only means there's still a huge market share for Apple to conquer ;) This only means there’s still a huge market share for Apple to conquer ;)

]]> By: Dennis http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2361 Dennis Mon, 02 Jul 2007 12:40:47 +0000 http://blog.icann.org/?p=139#comment-2361 I agree with Michelle. I saw a powerpoint talk on IPv6 in which the author said it would take longer for a router to process an IPv6 packet because of the longer addresses. From my readings, and what I had put in my presentation, is that it would take less time for a router to process a packet b/c of the fixed header size. I was asked how much less time it would take, but I don't know. I work in modeling and simulation, and if packets can move across the country faster, it gives the simulation more realism. The same would be true of online games. Enough with the more address space stuff! Let's hear about packet processing speed. I agree with Michelle. I saw a powerpoint talk on IPv6 in which the author said it would take longer for a router to process an IPv6 packet because of the longer addresses. From my readings, and what I had put in my presentation, is that it would take less time for a router to process a packet b/c of the fixed header size. I was asked how much less time it would take, but I don’t know.
I work in modeling and simulation, and if packets can move across the country faster, it gives the simulation more realism. The same would be true of online games.
Enough with the more address space stuff! Let’s hear about packet processing speed.

]]> By: Butler http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2284 Butler Thu, 21 Jun 2007 15:18:27 +0000 http://blog.icann.org/?p=139#comment-2284 I'm very far away from being a math major so that comparison is great and very easy to understand. Just forget about all the numbers and lead any press/pr info with that comparison. You can put the math whiz stuff in the footnotes. I’m very far away from being a math major so that comparison is great and very easy to understand. Just forget about all the numbers and lead any press/pr info with that comparison. You can put the math whiz stuff in the footnotes.

]]> By: David Conrad http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2280 David Conrad Tue, 19 Jun 2007 21:46:44 +0000 http://blog.icann.org/?p=139#comment-2280 Interesting, but... The way IPv6 has been designed to work, it actually works out to 2^64 LANs. In theory, you could have 2^64 interfaces on those LANs, but if you have more than a couple of thousand devices, you'll likely deeply regret it. The reason for the insane amount of address space inside a LAN is to permit something called "stateless auto-configuration" and because it is architected into the protocol, half the IPv6 address space is used for it whether you use stateless auto-configuration or not. Further, the IETF has mandated 16 bits to be used for "local topology". This means if the IETF mandates are followed (and they aren't universally), there would be a theoretical maximum of 2^48 "sites", with each site having 2^16 LANs and each LAN capable of addressing up to 2^64 interfaces. Of course, the IETF has only designated 1/8th of the entire IPv6 address space to be used for what people consider "normal" IP addresses, so this means there are "only" 2^45 sites that can be addressed under current policies (each site having 2^16 LANs, and each LAN addressing 2^64 interfaces. Still a very, very big number. Rgds, -drc Interesting, but…

The way IPv6 has been designed to work, it actually works out to 2^64 LANs. In theory, you could have 2^64 interfaces on those LANs, but if you have more than a couple of thousand devices, you’ll likely deeply regret it. The reason for the insane amount of address space inside a LAN is to permit something called “stateless auto-configuration” and because it is architected into the protocol, half the IPv6 address space is used for it whether you use stateless auto-configuration or not.

Further, the IETF has mandated 16 bits to be used for “local topology”. This means if the IETF mandates are followed (and they aren’t universally), there would be a theoretical maximum of 2^48 “sites”, with each site having 2^16 LANs and each LAN capable of addressing up to 2^64 interfaces.

Of course, the IETF has only designated 1/8th of the entire IPv6 address space to be used for what people consider “normal” IP addresses, so this means there are “only” 2^45 sites that can be addressed under current policies (each site having 2^16 LANs, and each LAN addressing 2^64 interfaces.

Still a very, very big number.

Rgds,
-drc

]]> By: Sean Siler http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2279 Sean Siler Tue, 19 Jun 2007 20:13:08 +0000 http://blog.icann.org/?p=139#comment-2279 Not that I think these kind of examples are relevant, but I tried to come up with the same sort of scenario last year. Here's what I figured out: If you shrunk the entire IPv4 address space into a single Hydrogen nucleus (10^-14M) how big would IPv6 be in comparison? I will spare you the math, but you would have to travel at the speed of light for 30 days to get the end of the string of nuclei that would be the size of the IPv6 address space. The numbers are just too large; there is no way to comprehend how large 2^128 is. Sean Siler IPv6 Program Manager Microsoft http://blogs.technet.com/ipv6 Not that I think these kind of examples are relevant, but I tried to come up with the same sort of scenario last year. Here’s what I figured out:

If you shrunk the entire IPv4 address space into a single Hydrogen nucleus (10^-14M) how big would IPv6 be in comparison? I will spare you the math, but you would have to travel at the speed of light for 30 days to get the end of the string of nuclei that would be the size of the IPv6 address space.

The numbers are just too large; there is no way to comprehend how large 2^128 is.

Sean Siler
IPv6 Program Manager
Microsoft
http://blogs.technet.com/ipv6

]]> By: Paul Levins http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2277 Paul Levins Mon, 18 Jun 2007 21:26:38 +0000 http://blog.icann.org/?p=139#comment-2277 Michele This is on it's way in the form of a Factsheet on IPv6 that we hope to produce for distribution and use at our next f2f meeting at San Juan, Puerto Rico. So it's high on the priority list Paul Levins Michele

This is on it’s way in the form of a Factsheet on IPv6 that we hope to produce for distribution and use at our next f2f meeting at San Juan, Puerto Rico.

So it’s high on the priority list

Paul Levins

]]> By: Michele http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2272 Michele Mon, 18 Jun 2007 10:41:25 +0000 http://blog.icann.org/?p=139#comment-2272 Kieran It's nice to see you guys writing about IPV6, but it would be really really nice if you could give clear accessible examples of why IPv6 is cooler than IPv4 :) Michele Kieran

It’s nice to see you guys writing about IPV6, but it would be really really nice if you could give clear accessible examples of why IPv6 is cooler than IPv4 :)

Michele

]]> By: Watches http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2270 Watches Mon, 18 Jun 2007 01:47:03 +0000 http://blog.icann.org/?p=139#comment-2270 And how about the Zune!?? Heheheh It's a little bigger! And how about the Zune!?? Heheheh It’s a little bigger!

]]> By: Fergie http://blog.icann.org/2007/06/ipv6-the-ipod-and-the-earth/comment-page-1/#comment-2268 Fergie Sun, 17 Jun 2007 19:21:45 +0000 http://blog.icann.org/?p=139#comment-2268 I think you meant [above] that "...if all the IPv4 space would fit in an iPod, then all the IPv6 space is the size of the entire Earth." - ferg I think you meant [above] that “…if all the IPv4 space would fit in an iPod, then all the IPv6 space is the size of the entire Earth.”

- ferg

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