On Fri, Oct 22, 2010 at 11:21:36AM -0700, Cameron Byrne wrote: > On Fri, Oct 22, 2010 at 10:54 AM, <bmann...@vacation.karoshi.com> wrote: > > On Fri, Oct 22, 2010 at 09:42:50AM -0700, Cameron Byrne wrote: > >> On Thu, Oct 21, 2010 at 10:20 PM, George Bonser <gbon...@seven.com> wrote: > >> > > >> > > >> >> -----Original Message----- > >> >> From: Christopher Morrow > Sent: Thursday, October 21, 2010 9:49 PM > >> >> To: bmanning > >> >> Cc: NANOG > >> >> Subject: Re: IPv4 sunset date revised : 2009-02-05 > >> > > >> > > >> >> > >> >> (now I'm teasing.. .Bill where's your docs on this fantastic new > >> >> teknowlogie?) > >> >> > >> > > >> > I found it here: > >> > > >> > http://www.ivi2.org/ > >> > > >> > But the readme is a bit confusing: > >> > > >> > http://www.ivi2.org/code/00-ivi0.5-README > >> > > >> > Trying to figure out how they map a /70 v6 prefix to a /30 v4 prefix > >> > assuming the mapping is to be 1-1 > >> > > >> > >> Right, 1 to 1 does not solve any IPv4 exhaustion problems. > > > > > > ah... but the trick is to only need enough IPv4 in the pool > > to dynamically talk to the Internet. Native v6 to Native v6 > > never has to drop back to the Internet, It uses native v6 > > paths. So the larger the v6 uptake, the fewer Internet addreses > > you'll need to keep around in your pool. > > > > > >> Going back to the title of the thread, IVI does not help you sunset > >> IPv4 since the same amount of IPv4 is required. > > > > See above. > > > > So works, just not at a large scale. For larger scale, you need > address sharing like NAT64.
depends on your definition of "large" scale. for cernet2 --- "The grid over IPv6 covers 20 universities distributed in 13 cities, and the aggregation capability is high above 15 trillion time/sec, and the storage capability above 150TB." "CNGI-CERNET2 backbone runs IPv6 protocol and connects 25 PoPs distributed in 20 cities in China with the speed of 2.5Gbps/10Gbps. Meanwhile, the transmission rate of Beijing-Wuhan-Guangzhou and Wuhan-Nanjing-Shanghai is 10Gbps. Each PoP provides the 1Gbps/2.5Gbps/10Gbps access capacity for the access network. "Since the opening in 2004, CNGI-CERNET2 backbone has connected more than 200 IPv6 access networks of universities and R&D institutes in China, supported technical trials and application demonstration, and provided excellent environment for world-wide next generation Internet research." So, yeah... for these smaller, regional networks, its a good fit. For you big guys, you may need something else. --bill